Chiropractic – Page 9

Youth Sports: Are Single-Sport Child Athletes Really More Likely to Succeed Later?

August 25, 2016 oblanderchiropractic

Especially if they’re athletes or sports fans themselves, it’s not unusual for mothers and fathers to have secret (or not-so-secret) hopes that their kids can become good enough in a sport to earn a college scholarship or go on to a professional career. Some parents believe that the best way to work toward this goal is to encourage their children—sometimes as young as 6 or 7 years old—to focus on a single sport as early as possible. The reasoning behind this early specialization is pretty simple: Kids who are not splitting their time among multiple sports will get better, faster (and be more competitive) than their “distracted” peers. In other words, the children who commit early get a developmental head start that will make them high-performers later.

While this idea may make intuitive sense, a new study from the University of California, Los Angeles (which has a reputation as a major power in collegiate athletics) suggests that the logic simply doesn’t hold true. In a study presented at the annual meeting of the American Medical Society for Sports Medicine (AMSSM) in San Diego, Dr. John DiFiori, chief of sports medicine at UCLA’s School of Medicine, says that researchers can find no evidence that athletes who focused early on a single sport rose to elite levels in that sport.

To the contrary, most of the collegiate athletes surveyed were more like their peers, kids who enjoyed a wide range of recreational sports growing up, waiting until well into their teens before specializing on one sport. As DiFiori says, “Most successful athletes participate in a number of sports when they’re 6, 8 or 10 years old. That way, kids learn different skills and have the chance to discover which sport they truly enjoy.”

The study surveyed 296 male and female NCAA Division I athletes and found that 88% of them had participated in an average of two or three sports as children. In addition, 70% of them did not specialize in any one sport until after the age of 12. In a similar study on Olympic athletes, researchers found that most had participated in two or more sports before specializing.

While there are famous athletes like Tiger Woods or Andre Agassi who focused on one sport early in their lives, the research suggests that they are the exception and not the rule. The vast majority of successful collegiate or pro athletes dabbled in a number of other sports before settling on the one that brought them success. The data seems to indicate that early specialization may not help and may, in fact, be detrimental. Previous research has indicated, for example, that kids who train extensively in one sport are more prone to overuse injuries than kids who had more varied athletic experience, and played other sports as well. There’s also a greater risk of premature disengagement or “burn-out” that can come with focusing exclusively on one activity.

Based on this research, Dr. DiFiori feels that parents of kids who seem talented in one sport at an early age should allow and encourage them to play other sports. They may, after all, discover another sport that they enjoy more and are even better at. And—even if they do not—they will be exposed to sports that train them in a wider variety of motor skills. “Physical activity contributes to a happy and healthy childhood,” says Dr. DiFiori, “however, parents, coaches and children should monitor and measure their involvement level in a singular sport against the overall well-being and future success of the participant.”

The Truth About the “Five-Second Rule”

August 23, 2016 oblanderchiropractic

You’ve probably heard of the “five-second rule”. That’s the tongue-in-cheek saying some kids and young adults use when they accidentally drop a piece of food on the floor but pick it up and eat it anyway. According to the “rule”, food isn’t likely to become significantly contaminated with bacteria if it remains on the floor less than five seconds. Or at least that’s what we tell ourselves when we quickly grab that fallen potato chip before the cat gets it, brush it off, and stick in in our mouths (hopefully without anyone noticing). Most of us probably suspect this isn’t a great idea while we’re doing it, but is there actually any evidence to support the five-second rule?

Well, for those who admit to having done this once or twice in their lives (you know who you are…), you can feel a little bit better about it because there is some research that suggests the five-second rule might be valid.

Science has actually been studying the five-second rule for some time. In 2003, Dr. Jillian Clarke (then an intern and now a Ph.D.) analyzed the floors of the labs, dormitories, and cafeterias of the university she was attending, and found that far fewer bacteria were found than expected, possibly because most of the surfaces were dry, and thus did not encourage bacterial growth. She also found that very few “test foods” were significantly contaminated by E. coli bacteria from brief exposure to a surface that contained it.

A more recent study conducted at Aston University in Great Britain confirms her findings. The research team, led by Professor Anthony Hilton, studied a number of different floor surfaces and locations (carpeted floors, laminated floors, and tiles) with a variety of foods (toast, pasta, cookie, and a sticky candy) to see how much E. coli and Staphylococcus bacteria they attracted when dropped on these floors.

Unsurprisingly—as the five-second rule implies—time is a factor. The longer the food stayed in contact with the floor surface, the more likely it was that contamination would occur. There were also differences found in the floor surface itself, with carpeted floors being “safer” in terms of contamination than tiles. Says Hilton, “We have found evidence that transfer from indoor flooring surfaces is incredibly poor with carpet actually posing the lowest risk of bacterial transfer onto dropped food.”

That said, the moister the food, the more likely it was to pick up bacteria. The other major factor to be considered is (as in real estate) “location, location, location”. That is, certain locations are dirtier than others, and thus more likely to result in bacterial contamination, even if you beat the five-second buzzer. Bathrooms are, not surprisingly, high risk – don’t even think of employing the five-second rule there. Your kitchen floors, especially if you cook a lot of chicken, might be more likely sources of salmonella and other bacteria than, say, your living room or dining room. And among the dirtiest surfaces they tested were the dining tables in restaurants, because they have been “wiped clean” with cloths that were rarely changed and washed themselves.

So Dr. Hilton’s recommendation is to use your own common sense when tempted to invoke the five-second rule. If you accidentally drop a piece of food, take one second of your five noticing the location you’re in, and another second to determine the nature of the surface the food fell on. Then you’ve still got three seconds left to decide whether to pick it up and eat it.

Spotlight on Drug Interactions: What You should Know

August 18, 2016 oblanderchiropractic

Medications—prescription, over-the-counter, and herbal/nutritional—are used every day by millions of Americans to treat illnesses and to help them stay healthy. There is no question that these medications have improved our lives: Just try to imagine a world without antibiotics or without the tens of thousands of other medications that we rely on to save lives and prevent serious diseases.

At the same time, because Americans take so many medications—often simultaneously—a growing health risk has emerged in the form of drug interactions. Drug interactions are the negative side effects that can occur when we combine medications with other medications or with certain types of food or drinks that we also consume. For example, you have probably received a prescription at some point and been told by your doctor or pharmacist not to drink alcohol while taking it, because that could cause negative drug interactions. But did you know that a simple thing like grapefruit juice could also cause negative interactions? In a review published in the Canadian Medical Association Journal, researchers identified 85 different medications that interact negatively with grapefruit or grapefruit juice. Of these medications, 43 pose a risk of serious side effects, including severe symptoms like respiratory failure, kidney failure, intestinal bleeding, and even sudden death.

The growing possibility of serious—and even deadly—drug interactions places an increasing burden on physicians, pharmacists, and the public to become more aware of this problem and to take steps to prevent it. The risks of negative drug-to-drug and drug-to-food reactions are numerous and can be affected by factors such as the age and gender of the patient as well as his or her medical history, general health, body composition, and the number of medications used.

It is virtually impossible for a layman to be aware of all of the possible negative drug-to-drug and drug-to-food interactions, so the most important piece of advice to take to heart is to never leave your doctor’s office after having been prescribed a drug without asking when to take it, how much of it to take, and whether there is anything it should not be taken with.

This should be considered a basic health safety procedure, and you should practice it with scrupulousness. For example, if you are meeting with your doctor and are about to be prescribed medication, be sure to tell him or her if you are using any other medications, nutritional supplements or herbal products. Your doctor needs this information to safely prescribe the medications you need. Even “small” things that you think may not matter might actually matter a great deal! Remember our grapefruit example? If you normally eat a lot of grapefruit or drink a lot of grapefruit juice, you should mention this. Why? Because one of the chemical compounds found in grapefruit increases the absorption of many drugs. This can enhance their effects and make them more powerful, sometimes dangerously so.

This does not mean, of course, that you need to provide every detail of your diet and lifestyle to your doctor—focus on the aspects that you think may be relevant. You can learn a lot about possible negative drug interactions by reading publications such as this document on common drug interactions, “Drug Interactions: What You Should Know,” available from the U.S. Food and Drug Administration.

Also, if you want to be proactive, you can consult the online Interactive Drug Checker at WebMD, which allows you to enter the name of a prescription, over-the-counter, or herbal medication and then enter additional medications and find possible negative interactions between them.

Another all-important piece of advice is to always read the label that comes with the medication or supplement. It will contain information about the medication as well as other drugs, supplements, and foods that should not be taken at the same time.

Fitness Around the World

August 16, 2016 oblanderchiropractic

People in the US who are interested in staying in shape tend to favor running or working out at the gym to maintain fitness. But how do people in other parts of the world stay fit? And what might Americans learn from them? Following is a summary of how people in some other countries keep in shape.

The Netherlands and Scandinavia – The number one form of physical exercise in these countries is undoubtedly the bicycle. They use it to do everything from getting to and from work and school to shopping for groceries and cycling someone home from a date. There are dedicated bike lanes in every city, and many that stretch from one side of the country to the other. From small children to the elderly, everyone cycles as a matter of course, and their overall fitness shows how beneficial it is to their health.

China – You may have seen people in public parks around any major city (or any community with Chinese immigrants) performing a series slow, precise movements. Tai Chi is an ancient Chinese form of martial arts that is good for conditioning not only the body, but the mind as well. It is especially good for seniors, as it improves balance and overall mobility, increases strength in the legs and reduces stress.

India – Most people are surprised to learn that the physical practice of yoga as we know it is not actually ancient. Yoga in India was traditionally a mental and spiritual practice that incorporated special breathing techniques while in a sitting or standing posture. The type of exercise that comes to mind when we think of the word “yoga” (incorporating different postures called asanas, in combination with measured breathing) was not developed in India until the early 20th century. Nevertheless, yoga is now practiced very widely in India and all over the world as a way to promote overall mind-body fitness. It strengthens and stretches the muscles, increases flexibility and reduces stress.

Japan – Radio Taiso is a program of simple calisthenics set to music that is broadcast several times a day and is used by schools and many companies to help keep people fit. There are three official versions. One is a general fitness program for people of all ages, one is specifically designed to increase physical strength, and one is geared toward the elderly and disabled, who can perform the exercises while sitting down.

Brazil – An energetic form of dance that is taking off elsewhere in the world as well, Capoeira is a combination of dance, martial arts, acrobatics and music. It improves balance, coordination and rhythm while strengthening all the muscle groups. It will also improve your reflexes and help increase concentration.

Middle East – Belly dancing was originally developed as an exercise to aid women in childbirth. But belly dancing has many additional advantages. It particularly targets the “core” muscles, which are the ones responsible for keeping us upright and which have all too often become weakened by sitting for long hours at a desk. By strengthening your core muscles, you reduce your risk of suffering a back injury or chronic lower back pain.

Can Joint Injuries Really Cause or Accelerate Arthritis?

August 12, 2016 oblanderchiropractic

A U.S. Centers for Disease Control and Prevention (CDC) study performed from 2007-2009 showed that at least 22.2% of adult Americans suffered from arthritis. The actual number could be higher than the CDC estimate, though, because these were self-reported and doctor-diagnosed cases. Naturally, no one knows how many unreported cases there are. Still, it’s reasonable to believe that this percentage will only become higher as the population ages.

The short answer to the question asked in the title of this article is “Yes”. Joint injuries really can cause or accelerate arthritis. The reason is simple. Arthritis is all about inflammation of the joint. Inflammation is a natural reaction of the body to injury, pathogens or irritants. Trauma or injury is a major cause of arthritic conditions. Various forms of arthritis, like osteoarthritis (the most common form), are degenerative—they get worse over time and with wear and tear. Once an arthritic condition is established, it will get worse unless the root cause is found and dealt with, or the symptoms are managed by drugs.

Dr. Joseph Borrelli Jr., chairman and professor of orthopedic surgery at the University of Texas Southwestern Medical Center, performed a study to see how post-traumatic arthritis (PTA) developed after an acute joint injury. Using an animal model, Borrelli found that trauma to the joint can lead to a range of acute lesions, including fractures to bones, ligament or meniscus tears and damage to the articular cartilage. These types of injury are often associated with bleeding in the area of the joint and cause post-traumatic joint inflammation. Despite the resolution of the acute symptoms, and the fact that some lesions could be surgically repaired, joint injury causes a chronic remodeling of the cartilage and other joint tissues that in a majority of cases eventually manifests as osteoarthritis.

The key seems to be in the chondrocytes. These are the cells present in healthy cartilage that help to produce and maintain it. When an acute injury occurs, these chondrocytes become inactive within a month, slowly reducing the structural integrity of the cartilage. Borelli said “In our PTA model, the cells became inactive almost immediately after injury and stopped producing these compounds [that maintain the cartilage]. He continued, “This may explain why PTA sometimes develops very quickly in patients after an injury, regardless of how successful we were in fixing the fracture. PTA can develop in just 6 months—unlike osteoarthritis, which may take up to 60 years to develop.”

PTA aside, serious joint injuries that are not addressed promptly can cause a range of problems down the road. By healing incorrectly or incompletely, joints can become susceptible to instability and re-injury. Weakened or unstable joints may also lead to other related injuries as the body changes its mechanics to compensate.

If you or someone you care about has recently suffered a back, neck or other joint injury, we can help! Proper treatment can make a big difference!

When it Comes to Posture, the Little Things Matter. Like Sitting on Your Wallet…

August 11, 2016 oblanderchiropractic

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You know the big things that impact your posture, such as the height of your keyboard or whether you slouch on the couch, but it’s easy to overlook the little things. By the way, where is your wallet right now? If it’s currently in your back pocket, we need to have a talk…

Little Things Matter When it Comes to Posture

Your wallet fits so perfectly in your back pocket. Certainly it can’t hurt to keep it there, right? Unfortunately, sitting on your wallet can cause a host of posture problems, which can lead to pain in your back, shoulders, and neck. When half of your posterior is higher than the other, your pelvis twists, the spine becomes misaligned, and your shoulders have a tendency to slump. This isn’t good, but there is a simple solution: just keep your wallet in the front!

Now that your wallet is in the right place, it’s time to look at your feet. What kind of shoes are you wearing? If you’re a woman wearing high heels, think about giving your back a break. Tall heels put you off balance, which your body compensates for by flexing at the hips and spine. The forward curve in your lower back decreases, your knees are stressed, and the muscles in your back, hips, and calves tense. All of this can lead to poor posture and back pain. Switch to flats to solve the problem.

Guys, you aren’t off the hook in the footwear department. If it’s been a while since you’ve bought a new pair of shoes, take a closer look at your soles. Wear and tear in this area can throw off your gait, leading to posture issues and—you guessed it—back pain. Maybe it’s time for some replacements…

Women with large breasts might find it particularly difficult to maintain proper posture. This is more likely to be true without the support of a proper bra. If this situation is causing you to slouch or experience back or shoulder pain, consider looking into a posture bra. These bras have bands that are designed to carry your chest’s weight, reducing pull on the shoulder straps and allowing you to sit or stand straight and without strain.

Do you carry a heavy bag or purse with you? If you’re constantly carrying a heavy weight on one side of your body, you are also constantly shifting to the side to compensate, which can lead to back pain and even nerve trauma. Take some time to clean out your bag, and try to alternate the side you carry it on to reduce the damage.

Correcting the Damage

Life is full of little things that can lead to poor posture and pain, many of which you might not be aware of. Consulting with a chiropractor can help you gain a better understanding of how your daily life affects the way you sit and stand. If your posture has already been compromised or you are already experiencing back or neck pain, chiropractic care can also help to correct it. With expert guidance and a few changes, little problems can stop being a big deal.

Benefits of Copper

August 6, 2016 oblanderchiropractic

Like some of the other essential dietary minerals, copper is needed only in trace amounts for your body to function properly. Nevertheless, copper is vital to many of the body’s functions, so it is important to ensure that you are not copper deficient (which is actually quite rare). Since the human body cannot synthesize copper on its own, it must be absorbed by the body from the food we eat.

Copper combines with protein to produce enzymes that spur a wide range of bodily functions. It plays a key role in energy production, supports the brain and central nervous system, and helps in the creation and metabolism of neurotransmitters. It also is important in the formation of connective tissue (including that of the heart and blood vessels) and plays a part in bone formation. It is necessary for proper iron metabolism and the healthy formation of red blood cells. It is also responsible for the production of melanin, the pigment that gives color to the skin, eyes and hair. Copper acts as an antioxidant and is important for a healthy immune system.

As mentioned earlier, copper deficiency is relatively uncommon. However, some people are more prone to a deficiency than others. This includes those who have cystic fibrosis, severely restricted diets, or problems with absorption through the gut (such as individuals with celiac disease). Infants and the elderly are also more prone to copper deficiency. Infants may be more at risk they have been fed only cow’s milk formula (cow’s milk is very low in copper).

The recommended daily intake of copper is as follows:

Infants, birth to 6 months: 200 mcg/day

Infants, 7 – 12 months: 220 mcg/day

Children, 1 – 3 years: 340 mcg/day

Children, 4 – 8 years: 440 mcg/day

Children, 9 – 13 years: 700 mcg/day

Adolescents, 14 – 18 years: 890 mcg/day

Adults, 19 years and older: 900 mcg/day

Pregnant women: 1,000 mcg/day

Breastfeeding women: 1,300 mcg/day

Being deficient in copper can contribute to anemia and osteoporosis as well as a variety of other health problems. However, having too much copper in your system can actually be toxic. Signs of copper toxicity include nausea, vomiting, diarrhea and abdominal pain that can eventually lead to kidney and liver failure, coma and death. Taking high amounts of zinc can lower copper levels that have become too high.

Children should get the copper they need from their diet rather than from supplements. Adults who are considering taking a copper supplement should consult with their doctor before doing so, since it is important not to get too much copper, and it must have a proper balance with zinc. Foods rich in copper include liver, nuts (particularly cashews, almonds and Brazil nuts), seeds, legumes, clams and oysters.

Are Stand-Up Desks Really Any Healthier for Office Workers?

August 4, 2016 oblanderchiropractic

Handsome African American male writing at desk with laptop, phone, clipboard. Shot with a Canon 20D.

Standing desks or stand-up desks are not a new fad. They’ve been around since at least the time of Benjamin Franklin, the founding father who used one over two hundred years ago. However, there remains a great deal of controversy regarding the benefits and drawbacks of stand-up desks.

A number of sources agree that standing up while you work gives you more energy and keeps you more alert. The University of Chester performed a study in 2013 that showed heartbeats rose by ten beats per minute because of standing. This increased the number of calories burned each day. In addition, blood glucose levels after lunch returned to normal far faster in those study subjects who stood as they worked.

Others have found that standing helps reduce lower back pain. Users of stand-up desks found that they engaged more fully with their colleagues and felt more ready for action if something called them away from their desk. They felt their minds wandered far less and they stayed more focused. Some users even found that stand-up desks lent themselves to certain “power poses” that benefited physiology, increasing testosterone and decreasing cortisol, the stress hormone.

Stand-up desk users seemed to agree, though, that leg and foot soreness can be a problem. This may be a particular problem for individuals who are just starting to use a stand-up desk user and whose bodies aren’t yet accustomed to the new way of working. More comfortable shoes and an anti-fatigue mat can help reduce this problem. Gradually building up the amount of time spent at a stand-up desk can also help.

If you do opt for a stand-up desk, it’s important to get one at the right height. Because each person is different, getting a custom desk built can be prohibitively expensive. A better alternative is to get an adjustable desk. One with hydraulic power can be lowered for occasional sitting and increased to a custom height to suit your individual needs.

Sitting for long periods each day can lead to all manner of illnesses—heart disease, diabetes, vein disease and more. But standing for long periods can also create health risks, especially vein disease.

A Cornell University ergonomics team found that the real solution was simply to move around regularly. If you’re sitting at a desk, stand up every 20–30 minutes and move around for two minutes. The movement gets the blood pumping, increases calorie burn, and decreases the risks for heart disease, diabetes and other ailments. This doesn’t require vigorous exercise. Simply pacing for a couple of minutes will be enough to undo the damage of sitting for half an hour. This, of course, requires an awareness of the time and a measure of discipline to move when the appointed time arrives. Adding some moderate exercise to your daily routine can do wonders for your health, even without the use of a stand-up desk.

Pets, Kids and Immune System Health

July 26, 2016 oblanderchiropractic

Over the past few years, health researchers around the world have become increasingly interested in exactly how our immune system develops. In particular, they want to understand how it might be shaped by the environment we live in—and especially by our interactions with microbes. One theory, known as the “hygiene hypothesis,” posits that reduced exposure to bacteria, symbiotic microorganisms (for instance, the flora that live in our digestive tract) and parasites makes us more susceptible to allergic diseases by suppressing the natural development of our immune system.

The basic idea is that modern standards of household and personal cleanliness, smaller family units and less outdoor time have all combined to limit the number and types of microbes many of us come into contact with, and that this has resulted in more people having immune systems that are over-sensitive or calibrated incorrectly. This line of thinking leads to an interesting question: Do people who have been exposed to more or different types of microbes actually have stronger immune systems? One way researchers have approached this question is to study individuals who have spent more time with animals (pets) or in the company of lots of children.

The Pet Effect

A recent Finnish study performed by researchers at Kuopio University Hospital found that babies who grow up in a home that has a pet are less likely to get coughs and colds in their first year of life than their counterparts who live in pet-free homes. Lead author of the study, Dr. Eija Bergroth, a pediatrician at the university, said, “We think the exposure to pets somehow matures the immune system so when the child meets the microbes, he might be better prepared for them.” Researchers believe that the dander that pets shed and the microbes that they bring in from outdoors prime babies’ newly-forming immune systems, teaching them to fend off allergies, bacteria and viruses.

Previous studies had found a link between the presence of pets in a baby’s home and a lower risk of allergies. And in a study performed on mice, exposure to household dust from a home in which a dog lived prevented a common respiratory virus that has been linked to the development of childhood asthma.

Researchers from the Finnish study, published in the journal Pediatrics, followed the health of 397 Finnish children during their first year of life. Parents recorded the state of their child’s health on a weekly basis, including any runny noses, coughing and ear infections. They also noted if the child took any antibiotics. The results of the study found that children with pets in the home had a 44% lower risk of contracting an ear infection and were 29% less likely to be prescribed antibiotics, when compared with babies from pet-free homes.

The type of pet in the home did make a difference in how likely babies were to become ill during their first year. Dogs in the home were associated with a 31% lower risk of illness in the first year, whereas the presence of cats in the home was associated with only a 6% improvement in risk. The greatest benefit was from outdoor pets (those that were not restricted only to the indoors), as they brought in a wider array of microbes on their fur.

According to researchers, early exposure to pets seems to be the key in developing greater resistance to microbes, as it is the time that a child’s immune system is learning to differentiate friendly from unfriendly microbes, and by getting a wide array of these in small amounts, babies’ immune systems become well-trained early on.

The Kid Effect

Maybe it’s just wishful thinking, but many moms and dads (as well as teachers and childcare workers) believe that being around young children boosts their immune system. It’s easy to see why this idea has some popular appeal. After all, young children typically have lots of contact with other young children, often in environments where lots of germs can be spread. They then bring these same germs into contact with adults, whose immune systems need to fight them off over a sustained period of time. The thinking goes that this, in turn, helps make these adults more resistant to them.

But what does the science actually say about this? Rigorous research is hard to come by, but perhaps the best anecdotal evidence can be found in the “common wisdom” imparted to new kindergarten and elementary school teachers. When one woman started teaching in California, her school board warned her that she should probably plan her finances for the first year of teaching based on being out sick more than her allotted number of “sick days,” and thus not being paid for them. The woman, who had always been remarkably healthy, laughed at this advice, but then spent 25% of her first year at home sick, likely because of all the germs she picked up from kids in the classroom.

However, this same schoolteacher rarely ever got sick again. Her exposure to a wide variety of germs transmitted by the kids did seem to boost her immune system over time, and enhanced her ability to be exposed to them in the future without getting sick herself. We can possibly infer that the same thing happens with small children in the home—they pick up germs at school and bring them home where the parents are exposed to them. This exposure then builds immunity over time rather than diminishing it. Dr. Jordan S. Orange, chief of immunology, allergy and rheumatology at Texas Children’s Hospital explains the simple mechanics of this “early exposure” process this way: “When you get it [immunity], you have it. So, if you get it earlier, you’re going to be immune earlier.”

How Are Bones Made and How Do They Grow?

July 21, 2016 oblanderchiropractic

Each of the 206 bones in your body is constantly undergoing a process of breakdown and renewal, even if you have never suffered a broken bone in your life. Your entire skeleton is completely replaced approximately every 10 years. The construction of bone tissue begins when we are a fetus in the womb, and continues until we die. Our genetics and both the nutrients we receive before we are born and those we get through our diet in our youth have a major influence on the strength and endurance of our skeletal system.

Fetal cartilage is the precursor to bone growth, and is transformed into bone in a process called ossification. The fetal cartilage attracts the minerals calcium and phosphorus, which cover the cartilage cells. The fetal cartilage cells soon die off, leaving small holes through which blood vessels can grow. Osteoblasts, the specialized cells responsible for bone growth, travel to the developing bone via these tiny blood vessels. There they produce the collagen fibers that are the structure over which bone is formed, and attract the calcium with which the fibers are covered. Osteoblasts eventually transform into osteocytes, which become part of the calcium mix that helps to reinforce the collagen fibers and strengthen the bone.

Osteoclasts are the cells responsible for breaking down and removing old bone tissue, leaving small chambers that allow marrow to form. The small holes osteoclasts create are why this particular part of the bone is called spongy bone. Although it is hard, spongy bone resembles a common kitchen sponge. In our youth, the osteoblasts outnumber the osteoclasts, so we have a net gain of bone growth. This is when the growth of bone is referred to as modeling. Bone continues to grow until approximately our mid-20s, at which point we have reached our greatest bone density.

From our mid-20s on, our bones are in a constant process of remodeling. At this point, the osteoblasts can no longer keep up with the osteoclasts. While bone is continually being rebuilt, no supplemental bone is being added, so we can begin to lose bone density. Even though our bodies no longer add to our stock of spongy bone tissue after our mid-20s, we can still continue to add bone to the outer layer of our bones, called compact bone. Compact bone accounts for about 80 percent of our bone mass and protects the more fragile spongy bone inside. Although compact bone is considerably denser than spongy bone, it still has tiny channels for blood vessels and nerves to pass through.

Our spongy bone is filled with two types of marrow, red and yellow. Red bone marrow is responsible for the creation of our red and white blood cells and the platelets that are necessary for clotting in order to stop bleeding when we are injured. Yellow bone marrow consists mostly of fat cells and is more common in our long bones, such as the femur.

A healthy diet with adequate amounts of calcium, magnesium, phosphorus and vitamin K, along with a little regular weight-bearing exercise, will help ensure that you maintain the greatest bone density possible as you age, and will help protect against the danger of fractures due to osteoporosis.

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