Brittle nails: A lack of biotin can affect nails ... can be caused by a lack of Vitamin B or iron. Vitamin deficiency: Vitamin D deficiency can be caused by poor nutrition, lack of sunlight ...

“A common trigger of weak, peeling nails is iron deficiency anemia ... nutritional deficiencies in biotin, zinc, vitamin D, ...

Nails are primarily composed ... be a warning sign of vitamin D3 or calcium deficiency.” Calcium builds and maintains strong bones, while vitamin D helps the body absorb calcium from foods ...

A vitamin D deficiency at that stage of life causes the thymus to age more quickly, the researchers discovered. The study is published in the journal Science Advances .

Ensuring proper nutrition is essential for maintaining overall health. Deficiencies in vitamins and minerals can manifest ...