A vitamin D test measures your blood's vitamin D levels to see if they are too high or too low. Low vitamin D levels can ...

A vitamin B12 blood test is a reliable way to determine if you have adequate levels of this crucial nutrient. Vitamin B12 is ...

Vitamin D is an essential micronutrient that's an important part of a healthy diet. Learn what types of foods are rich in vitamin D.

Micronutrients are defined as nutrients that are essential for health and survival, but in trace amounts. They are categorized as water-soluble and fat-soluble vitamins and trace minerals (required in ...

Dr. Omar Al-Heeti is an assistant professor of medicine at Southern Illinois University and practices internal medicine with a specialty in infectious diseases. He received his medical degree from the ...

Vitamin D helps your body absorb calcium, supports bone health, and plays a role in immunity, muscle function, and more. While most people can get enough from sunlight, food, or supplements, some may ...