Diet pills, supplements and surgery
Learning Center
Alli weight-loss pill: Does it work?
Alli is an over-the-counter weight-loss pill that keeps your body from absorbing all of the fat in food. Learn about the drug's benefits and side effects.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Apple cider vinegar for weight loss
Proponents tout apple cider vinegar as a weight-loss aid, but there's little proof that it works.
Dietary supplements for weight loss
Do dietary supplements help with weight loss? Are they safe? Get the facts.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Phentermine for weight loss
This prescription medicine can help with weight loss when combined with a healthy diet and exercise.
Prescription weight-loss drugs
Thinking about weight-loss drugs? Find out if one of them could help you.
Protein shakes: Good for weight loss?
Protein shakes aren't a magic bullet for weight loss. Here's why.
Vitamin B-12 injections for weight loss: Do they work?
Vitamin B-12 injections — A weight-loss shot sounds appealing, but does it work?