In both the arms and the legs, the half closest to the body has one strong, thick, long bone. The other half of the arm or leg, the part farthest from the body, has two thinner bones. There are 206 bones in the entire human body, so the skeletal structure of the legs and arms are actually quite simple.

Muscle weakness in pediatrics, also known as hypotonia, may be a symptom of an underlying medical condition. If you suspect that your child is experiencing abnormal muscle development, consult a doctor as soon as possible.

Magnesium is essential for heart, muscle and nerve function, for a healthy immune system, to balance blood sugar and for strong bones. If you are considering magnesium supplementation, be sure to discuss it with your doctor first.

Taking vitamin B-6 supplements will not cause birth control pills to lose their effectiveness. In fact, increasing your intake of vitamin B-6 while taking the pill may even prove beneficial, as birth control pills may lower levels of vitamin B-6 in the body for some women.

Every year, a whole host of new diet books hit the shelves, and new fad diets explode in popularity. It can be difficult to differentiate between which diets are safe and effective and which are not.

Commonly sold under the trade-name Pycnogenol®, pine bark extract is an herbal antioxidant supplement derived from the French maritime pine tree (Pinus maritima).

Homeopathic arnica montana, commonly known as arnica, has been widely used in medicinal purposes for centuries. Quite often, arnica is the first remedy used in acute trauma--specifically injuries that involve bruising, sprains and head contusions--and after surgeries.

If you're a tea drinker, you may have heard of or tried Earl Grey tea, a blend of different Chinese teas with some added citrus flavor.

Children with sensitive ears, also called sensitive hearing and hyperacusis, feel discomfort when they hear everyday sounds that are tolerated by those with normal hearing. The condition can be difficult to diagnose because children might present with behavioral, rather than physical, symptoms.

Foods containing low density lipoprotein, or LDL, cholesterol are animal-based and/or commercially-prepared products. LDL cholesterol, according to the American Heart Association, is found in foods containing saturated and/or trans fats. Saturated fats are found in animal-based products.

Edema means swelling of the soft tissues. It tends to occur in the feet, ankles and legs or the back in persons who are lying flat for long periods of time. It also most frequently occurs in both legs. The presence of edema in both legs has a broad number of possible causes.

Breast tenderness in men most often occurs in men with gynecomastia, abnormal enlargement of the breast tissue. Hormonal imbalance between testosterone, the dominant male hormone, and estrogen, the dominant female hormone also produced in small quantities by men, causes gynecomastia, MayoClinic.com reports.