Corporate interests from the meat and sugar industries are actively disputing dietary recommendations that could help prolong the duration and enhance the quality of the lives of many North Americans.

Colds and pneumonia are caused by infection. You do not pick up infections from cold weather, you get germs from other people who sneeze or cough in your face or transmit germs with their hands to objects that you touch.

On May 23, 2015, John Nash and his wife were killed while riding in a taxi on the New Jersey Turnpike. The driver...

Having weak quad muscles (in the front of your upper legs) increases risk for damage to the cartilage in your knees. A study from Purdue University showed that strengthening these muscles slows down knee cartilage damage and may even improve knee function.

Sugar added to foods increases risk for diabetes and heart attacks, while sugar in whole fruits does not. People who eat lots of fruits and vegetables are at reduced risk for heart attacks and are least likely to die prematurely

More than 40 percent of people who have had heart attacks are diabetic and these patients are the ones who are most likely to die from their heart attacks (Lancet, 2002; 359: 2140-44). Three tests are commonly used to diagnose diabetes: fasting blood sugar, blood sugar level two hours after eating, and HbA1c, a measurement of how much sugar is attached to cells.

Every athlete who trains for competition in sports that require endurance learns sooner or later that after exercising long and hard, you feel sleepy and need to go to sleep to recover. Older people may need even more sleep after intense exercise than younger people. If you don’t get lots of extra sleep when you do prolonged intense exercise, you don’t recover as quickly and are at increased risk for injuring yourself.

Fausto Coppi was the best international cyclist in the years before and after World War II because he was the best climber, time trialer...

Metformin, sold under the trade name Glucophage, is used to treat diabetes, but several studies show that it also helps non-diabetics to lose weight by reducing hunger.

Amid growing concerns about artificial sweeteners, many of my readers asked whether stevia can also change gut bacteria. Stevia is a sugar substitute extracted from the leaves of a plant, Stevia rebaudiana, and is almost 200 times sweeter than regular table sugar. In 2008, the FDA declared that stevia was safe in foods and beverages.