Borderline deficient in February. Clearly symptomatic by June. Summer heat, heavy sweating, and disrupted meals do the rest.

Being low in this nutrient can lead to fatigue, irritability, difficulty concentrating and more. Here's how to get more of it ...

Vitamin D deficiency affects an estimated 35 percent of Americans, and common signs include fatigue, frequent infections, bone fractures that heal slowly, muscle pain, and hair loss. If you're ...

THAT’S MORE COMMON THAN YOU THINK. A SIMPLE COMPLAINT THAT A PATIENT IS MORE TIRED THAN USUAL IS ENOUGH TO TIP OFF DOCTOR ARIEL LANGER. A LOT OF THE TIME WHEN I SEE PATIENTS WHO ARE IRON DEFICIENT, ...

More than 38 million Americans have diabetes, and between 90% and 95% of them have type 2 diabetes. While most are adults over the age of 45, an increasing number of children and teens are also ...

There is a significant inverse relationship between concentrations of circulating 25­-hydroxy­-vitamin D (25[OH]D) and all-cause mortality, but only in people with vitamin D deficiency, suggests a new ...

Virtually every cell in the body requires iron in order to function well. Iron is involved in key bodily processes, including the transportation of oxygen in the blood. It also plays a central role in ...

Why does the body crave meat or protein-rich foods when protein levels are low? A South Korean research team has uncovered ...