A deficiency disease is a medical condition caused by insufficient intake of essential nutrients, such as vitamins and minerals, that the body needs to function properly. These nutrients are normally ...

A vitamin B12 deficiency, whether because you're not getting enough B12 or aren't absorbing it well, can cause symptoms like fatigue, difficulty walking, weakness, and confusion. Find out if you may ...

Deficiency of vitamin D has been linked to issues in bone health, but recent studies are revealing a more complex relationship between this nutrient and the immune system. Emerging evidence suggests ...

A neurologist explains how common medications can cause vitamin B12 deficiency, damage nerves over time, and trigger numbness ...

Brits plagued by forgetfulness are being told to get their vitamin levels checked, as running low on a crucial nutrient can ...

Immunoglobulin A (IgA) deficiency is the most common primary immunodeficiency in humans. It can increase the risk of allergies, asthma, and autoimmune disease. Primary immunodeficiencies are ...

When the thyroid gland is unable to create enough thyroid hormone to meet the body's needs, it is known as hypothyroidism. The body's metabolism slows down as a result. You should get checked if you ...

Some research suggests people with cancer may have an increased risk of folic acid deficiency, which may be due to cancer-related complications and treatments. Folic acid, also called folate or ...

Ischemic heart disease, the leading cause of death in the United States, has long puzzled researchers. While high serum cholesterol levels are linked to cardiovascular risk, the role of dietary fat ...

What you eat matters, but how much you eat is just as important. That’s the case with protein, the superstar macronutrient getting tons of hype for its many benefits. In addition to helping you feel ...