If you are an exerciser and develop a sharp pain on a bone that hurts when you press directly on that spot and does not hurt to touch an inch away, you probably have a stress fracture. Stress fractures are very common injuries, particularly in runn ...

This is the saddest story I have ever had to write.  Kelly Catlin was a world-class bicycle racer who won a silver medal in the 2016 Summer Olympics and gold medals in the 2016, 2017, and 2018 UCI Track Cycling World Championships. At the s ...

Normal brain cells live a certain amount of time and then die. To keep the breakdown products of these dead cells from accumulating in your brain and harming you, you have specialized cells called microglial cells that eat the dead nerve cells and ...

Aging causes you to lose strength, no matter how much you exercise. Muscles are made up of hundreds of thousands of individual fibers, like a rope is made up of many strands. Each muscle fiber is innervated by a single motor nerve. With aging you l ...

Luke Perry was a television actor and movie star for more than 35 years, most famous as Dylan McKay, a brooding and alcoholic teenager who was the son of a millionaire on the TV series Beverly Hills, 90210, from 1990 to 1995, and again from 1998 ...

Several recent studies show that exercise helps to prolong your life by: • strengthening heart muscle, • increasing the ability of the heart to pump increased amounts of oxygen through the body, • reducing belly fat, and • i ...

You can often tell if people have diabetes just by looking at them. A person with a big belly and small buttocks is at very high risk for being diabetic, because those who store fat primarily in the belly are most likely to also store a large amoun ...

Do you know why a healthy person who makes other people sick may be called "Typhoid Mary"?  There really was a Typhoid Mary. She was an apparently healthy person who caused more than ten documented epidemics of typhoid fever, at le ...

At last, the U.S. Food and Drug Administration (FDA) is proposing new rules on sunscreen safety. Finalizing these rules and actually making changes on the regulation or labeling of sunscreens will take time, so I advise you to follow their recommen ...

  North Americans almost never suffer from vitamin deficiencies, except possibly for vitamin D, yet more than 50 percent of the population spends more than 30 billion dollars each year for vitamin pills and other nutritional supplements ...