What are weight-loss dietary supplements and what do they do?
The proven ways to lose weight are eating healthful foods, cutting calories, and being physically active. But making these lifestyle changes isn’t easy, so you might wonder if taking a dietary supplement that’s promoted for weight loss might help.
This fact sheet describes what’s known about the safety and effectiveness of many ingredients that are commonly used in weight-loss dietary supplements. Sellers of these supplements might claim that their products help you lose weight by blocking the absorption of fat or carbohydrates, curbing your appetite, or speeding up your metabolism. But there’s little scientific evidence that weight-loss supplements work. Many are expensive, some can interact or interfere with medications, and a few might be harmful.
If you’re thinking about taking a dietary supplement to lose weight, talk with your healthcare provider. This is especially important if you have high blood pressure, diabetes, heart disease, liver disease, or other medical conditions.