When your body lacks vitamin D, it can disrupt several important functions, especially the bones, muscles and immune system.

From nausea and exhaustion to emotional shifts and social awkwardness, people on GLP-1 medications are sharing the side effects they didn't expect — and rarely see talked about.

Infectious mononucleosis, often called "mono," is a viral illness best known for causing extreme fatigue, sore throat and ...

Learn how IBS-C is diagnosed using symptoms and the Rome Criteria, what might trigger the condition in the first place, and how it's different than occasional or functional constipation.