As of 2007, more than 23 million Americans were living with diabetes. Of those 23 million, approximately 12 million of them are adult men.

Yes, it can. Of course, there are many variables involved. It depends on the test and the actual condition of your body after the workout. For the most accurate results, blood tests should be done when rested or with normal activity. Some are only accurate when you have been fasting.

Many natural supplements can affect your blood sugar, including niacin, DHEA, ginkgo biloba, melatonin, black or green tea, glucosamine sulfate and high-dose fish oil or vitamin C. Other supplements might lower blood sugar levels and require a dosage change if you take a medication for diabetes.

Blood sugar levels are considered to be normal if they fall between 70 and 140 mg/dl. However, if serum glucose levels fall below 70 mg/dl, hypoglycemia or low blood sugar can occur. Not eating enough is a common cause of low blood sugar.

It has long been known that vitamin D plays a vital part in maintaining strong bones and teeth. There is new evidence that vitamin D has a crucial role in regulating your immune functions, according to a 2009 paper in “Expert Reviews in Clinical Immunology.

Blood glucose, or blood sugar, provides energy to all of your organs and tissues. When diabetes develops, blood glucose is too high, yet your cells have difficulty getting enough energy because insulin is unable to move glucose into the cells.

White blood cells, also called leukocytes, function to protect the body from foreign invaders such as bacteria and viruses. Five major types of white blood cells exist, each performing important functions in the immune system.

Blood sugar levels that drop too low can be just as dangerous as high blood sugar levels. This is especially a concern for diabetics, but nondiabetics can develop symptoms and health problems as well.

Low white blood cell counts, a condition known as neutropenia, can occur as a result of certain diseases or as a side effect to medications, particularly cancer chemotherapy. Fortunately, several drugs have been developed that safely and effectively increase white blood cell levels.

The blood-type diet designed by Peter D'Adamo contains four sets of eating and lifestyle instructions, one for each of the four blood types: A, B, AB and O.

White blood cells (WBCs) serve as the principal actors of the immune system. The 5 classes of WBCs, or leukocytes, differ in appearance and function. These classes include neutrophils, monocytes, lymphocytes, eosinophils and basophils.

You rely on your morning coffee to help you feel more alert and awake. Caffeine -- the active ingredient in your coffee -- has a number of effects on your body when it first works. The effects may be unpleasant when the caffeine breaks down in your system.