Parathyroid hormone levels at the upper end of the normal range (above 56 pg/mL) are linked to a 61% increase in all-cause mortality risk.

Reaching for a banana could do more than power your morning smoothie. A new international study suggests that eating more potassium-rich foods could help lower the risk of dangerous heart problems.

RAMAT-GAN, Israel — Your blood test results might be “normal,” but still put you at risk for serious heart problems. A major international study found that people with serum sodium levels at the upper ...

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 ...

Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is essential for developing and maintaining a healthy central nervous system, red blood cells and nucleic acids, such as DNA and ...