The new year is a time to set new goals, and for many people this means losing weight and improving fitness.

Dietary Supplements for Workout and Athletic Performance covers products that claim to improve strength or endurance, increase exercise efficiency, and speed up performance goals.

"Dietary supplements promoted for exercise and athletic performance can't replace a balanced diet," says ODS director Paul M. Coates, Ph.D. Others don't work and may be hazardous.

Two-thirds of Americans are overweight or obese, and many are striving to shed weight. Dietary Supplements for Weight Loss simplifies the market's possibilities.

“Americans spend over $2 billion a year on dietary supplements promoted for weight loss, but there’s little evidence they actually work,” said Anne L. Thurn, Ph.D., director of the ODS Communications Program.

This fact sheet includes African mango, beta-glucans, chromium, garcinia, green tea, hoodia, and raspberry ketones.

Coates encourages individuals to talk to their doctors about dietary supplements and visit the ODS website for further information. "People can join the ODS listserv to be notified when we update our webpage."

The ODS examines scientific information, promotes and supports research, disseminates research results, and educates the public to improve the quality of life and health of the U.S. population. has ODS's programmes.