Dr. Sandra L Hans M.D.

Dehydration results when you lose water in your body. The rule of thumb is, if you’re thirsty, you’re already dehydrated. Keep well hydrated by drinking plenty of water, even before you begin your outdoor activity,” said Dr. Irvin Sulapas, a primary care sports medicine physician and assistant...

Causes of Fainting A person faints or loses consciousness for a brief time when the brain does not get enough oxygen. Fainting or passing out is also medically called syncope. Before fainting, people may experience lightheadedness, dizziness, weakness, and nausea. Others describe fainting as...

Almost every cell in the body has a primary source of energy, which is usually glucose. However, when the body doesn't have enough glucose, the liver responds by producing chemicals known as ketones, converting stored fatty acids into ketone bodies. Ketones are used as a backup fuel source when...

Our body has three types of blood cells: white blood cells, red blood cells, and platelets. White blood cells (WBCs) or leukocytes are the type of cells that fights off infections in our body. The platelets work by helping our blood clot, and the red blood cells (RBCs) are the ones responsible for...

IntroductionMetabolism is a complex biochemical process that is needed to maintain life. Availability of nutrients and nutrition are closely associated with metabolism since metabolism is a process that involves the conversion of food into energy, which is used to fuel the body's cells. The basal...

For good health, strong bones are important. Bone mineral density(BMD) is the best way to measure the health of the bones. It is a comparison of the person's bone density or mass to that of a healthy person who is of the same age and sex. Bone mineral density can show whether a person has...