Lauren Manaker, a registered dietitian nutritionist, outlined the effectiveness of D2 and D3 in food and supplements. “While ...

These are the best foods for hair growth and stronger strands, according to hair and nutrition experts. Add these foods to a ...

Is the sunshine vitamin why you can't sleep? A new study explores the link between vitamin D deficiency and poor sleep ...

Another fatty fish that is an excellent source of vitamin D is the swordfish. The USDA lists a 100-gram serving as containing ...

Vitamin D is crucial for bone health and the immune system, but excessive supplementation can lead to toxicity, causing serious health issues like hypercalcemia and kidney damage. The recommended ...

Fact checked by Nick Blackmer More than half of people with type 2 diabetes in the Americas may be deficient in essential ...

Vitamin D is an important nutrient but one that people tend to lack during the winter months. Vitamin D helps keep bones strong and works to support the body's immune system. The main way people ...

Avoid taking megadoses of vitamin D unless prescribed by a doctor. Eating vitamin D supplements in incorrect amount can lead to digestive discomfort, including nausea, constipation, or diarrhea.

However, bluefin tuna has 227 IU of vitamin D per 100-gram serving, so check which type of tuna you're eating as well. As listed by the USDA, one whole egg yolk packs a whopping 218 IU in ...