![Inside Health show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/030/825/small/medical-matters.jpg)
Summary: Mark finds out why HIV might protect against MS, how much is black skin at reduced risk of skin cancer, iron overload and the training that helps recover a lost sense of smell.
Summary: Mark finds out why HIV might protect against MS, how much is black skin at reduced risk of skin cancer, iron overload and the training that helps recover a lost sense of smell.