Kidneys filter waste from your blood and ship it out in your pee. When your kidneys don’t work right, toxins can build up. One common tipoff is fatigue. You may feel spent, weak, or have trouble ...

Medically Reviewed by Jabeen Begum, MD on June 25, 2025 ...

Whether you're trying to lose weight, gain weight, or stick to your current weight, it's important to know how many calories you need to eat each day. Daily calorie intake is different for each person ...

Overview: Collagen is a dietary supplement that is available over the counter. Most collagen products are made from animals or fish. People often take collagen for skin and joint health, but its ...

Lycopene is an antioxidant -- it fights molecules called free radicals that can damage your cells and affect your immune system. Because of that, foods high in lycopene, like tomatoes, may make you ...

Bumps, patches, and spots in your mouth can be harmless. But sometimes, they can give clues to what’s going on with your overall health. Infections, stress, medication issues, and even aging can make ...

"Popcorn lung" is the nickname for bronchiolitis obliterans. This chronic medical condition can scar the smallest airways of your lungs, making you cough and feel short of breath. It's sometimes ...

Chemotherapy -- a treatment for cancer that uses strong drugs -- can lead to what’s sometimes called “chemo brain.” You may have trouble remembering details like names or dates, have a hard time multi ...

Medically Reviewed by Mahammad Juber, MD on March 04, 2025 ...

Overview: Iodine is commonly taken to increase iodine levels. Common side effects include diarrhea, nausea, vomiting, rash, or stomach discomfort. Serious side effects are rare but can include thyroid ...

Overview: Citicoline is a substance that is made by your body from a nutrient called choline. Citicoline can be turned into many chemicals that have important functions in the body and brain. Dietary ...

Your bones: You might not think of them much until something starts to go wrong. Find out more from WebMD's slide show about the conditions that can cause problems for the health of your bones.