[RERUN] Why do I have white spots on my nails?

If you’ve ever had white spots on your nails before, you may have been dismissively told that it's down to a lack of calcium or zinc. Basically, some mineral-deficiency. But this popular belief doesn’t really have any basis in fact. According to Healthline, nails grow an average of 3 millimeters per month. Their composition is made up of keratin, a protein, and just 0.03% calcium. So white spots are certainly not just a calcium problem. What is the color of a healthy nail? What other colours can my nails turn? In under 3 minutes, we answer your questions ! To listen to the latest episodes, click here: Are protein bars really worthwhile? How can I recognise an AI-generated image? Which foods and drinks stain teeth? A podcast written and realised by Joseph Chance. In partnership with upday UK. Learn more about your ad choices. Visit megaphone.fm/adchoices