Four study groups were created depending on the type of vitamin D injection and the oral form of replacement therapy. The ...

But once you use all your levels of vitamin B12, you’ll likely have a deficiency that can lead to some health problems. These include fatigue, memory trouble, or nerve damage. “Feeling ...

If you have factor XI deficiency, your blood doesn’t clot properly because it lacks specific proteins called “clotting factors.” It causes a mild form of hemophilia and may increase bleeding.

High homocysteine levels, or hyperhomocysteinemia, may indicate that a person has a deficiency in specific vitamins. Experts also associate hyperhomocysteinemia with a higher risk of ...

Iodine deficiency is a nutritional imbalance that happens when you don't have enough iodine in your diet. Iodine affects your ability to produce thyroid hormone, which can lead to a number of health ...

Medium chain acyl-coenzyme A dehydrogenase deficiency (MCAD deficiency) is a rare and potentially serious inherited condition that affects the body's ability to convert a certain fat into energy.