Diet pills, supplements and surgery
Learning Center
Hoodia: Does this dietary supplement help weight loss?
Hoodia manufacturers claim the supplement controls appetite, but where's the evidence to back up these claims?
Pet allergy: Are there hypoallergenic dog breeds?
There are no hypoallergenic dog breeds, but you can reduce your allergic reactions.
Dental braces: When to start
Dental braces are recommended for many children — When is the best time to start?
What is hot yoga?
Hot yoga, also known as Bikram yoga, is an intense form of yoga performed in a heated studio.
Do cortisol blockers aid weight loss?
Cortisol blockers claim to help with weight loss, but do they deliver? The evidence is slim at best.
Bitter orange weight-loss supplements: Do they work?
Bitter orange is in some weight-loss supplements. It acts like a stimulant, which sounds promising but has risks.
Phosphatidylserine supplements: Can they improve memory?
Phosphatidylserine holds some promise as a potential treatment for Alzheimer's and other memory problems.
Axona: Medical food to treat Alzheimer's
Axona — Can a supplement treat Alzheimer's disease?
Eye vitamins: Can they prevent or treat glaucoma?
Some supplements are marketed as 'eye vitamins' that help protect your eyes against glaucoma. Is there any truth to these claims?
Echinacea: Is it effective for the common cold?
Echinacea may slightly reduce the duration and severity of cold symptoms, but the effect may be too minor to notice.
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