Fingernails

"There's no shortage of folk wisdom about how to glean the state of your overall health from your nails, such as the pervasive idea that the white flecks that sometimes turn up – known as leukonychia – are a sign of calcium deficiency. But is there any truth to these ideas?"https://www.bbc.com/future/article/20250207-what-your-fingernails-can-reveal-about-your-health?utm_source=join1440&utm_medium=email&utm_placement=newsletter&user_id=66c4c92f5d78644b3ac5d5b4