Toenail fungus is caused by an overgrowth of yeast organisms. In my experience, the problem is normally a sign that yeast is active elsewhere in the body, particularly the gut.

Rachel Feltman is former executive editor of Popular Science and forever host of the podcast The Weirdest Thing I Learned This Week. She previously founded the blog Speaking of Science for the ...

Erectile dysfunction (ED) can affect a person's quality of life and self-esteem. Are there any dietary choices that can help? Get some tips here.