Brad Reisfeld is a professor of chemical and biological engineering, biomedical engineering, and public health at Colorado State University. Your blood serves numerous roles to maintain your health.

Aerobic exercise, which strengthens your heart so it can pump with less effort, was the second-most-effective intervention, after the DASH diet. Isometric resistance exercise — when you contract ...

Blood oxygen levels refer to the amount of oxygen circulating in the blood. Normal blood oxygen levels fall between 75 and 100 millimeters of mercury (mm Hg) on arterial blood gas (ABG) test results.

It is well known that preventing the onset of diabetes reduces the risk of death, and that managing blood glucose levels is key to preventing diabetes. However, it remains unclear whether there are ...

Why “normal range” doesn’t always mean healthy on your lab results Your doctor says everything looks fine, but you still feel terrible. The problem might not ...

Vitamin B12 may be last on the numerical list of B vitamins, but it's highly important for health and vitality. And according to Fred Pescatore, MD, a vitamin B12 deficiency is surprisingly common-in ...

Understanding your creatinine levels is important for monitoring kidney function. When you go for your yearly check-up, you'll likely have a routine blood test for creatinine. In some ...