HERBS TO MAKE ME PRETTY

Boost your metabolism with ...

GREEN TEA EXTRACT

HOW IT WORKS: Green tea contains compounds called catechins, a class of antioxidants which have been associated with an increased metabolism and the ability to stimulate fat burning. In a 2005 study published in the American Journal of Clinical Nutrition, a group of men who consumed 690 milligrams of green tea extract per day lost more weight in three months than a control group (an average of 5.3 pounds versus. 2.9 pounds). Previous studies have shown that green tea causes weight loss in women, too.

BEST BUY: Puritan's Pride Green Tea Extract capsules or Herbal Authority Green Tea liquid (puritan.com)

DOSAGE: Two 400 mg capsules a day; 10 to 20 drops twice daily. Take capsules or add liquid extract to one cup of tea or combine it with food. "I like to put it in soups and spaghetti sauce," says Letha Hadady, author of Feed Your Tiger: The Asian Diet Secret for Permanent Weight Loss and Vibrant Health (Rodale, 2007).

WATCH OUT: Green tea can alleviate water retention, but it also may cause diarrhea and nervousness.

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FISH OIL

HOW IT WORKS: Fish oil's omega-3 fatty acids help change the way the body uses fat: Instead of storing it, the body burns fat as fuel. In a study published in the American Journal of Clinical Nutrition in 2007, Australian researchers found that both fish oil and exercise independently reduced body fat. But a combination of the two--the study subjects walked briskly three times a week for 45 minutes and consumed 1.9 grams of fish oil daily--was even more effective. "Fish oil also seems to stop some kinds of fat cravings," says Julia Ross, director of Recovery Systems Clinic in Mill Valley, Calif.

BEST BUY: Nordic Naturals Omega or Ultimate Omega Fish Oil soft gels (nordicnaturals.com)

DOSAGE: 1000 to 2000 mg daily.

WATCH OUT: Start with a low dosage; higher dosage may disrupt sleep, says Ross.

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L-GLUTAMINE

HOW IT WORKS: When blood sugar levels drop, cravings tend to follow because your brain isn't getting the fuel it needs. "L-glutamine, an amino acid, instantly fuels the brain, which stops the code red that makes you crave sweets and starchy foods," says Ross. Evidence also suggests that L-glutamine might facilitate weight loss by affecting the conversion and storage of calories. In a 1996 study at Duke University Medical Center, researchers found that supplementation with L-glutamine caused weight loss in mice.

BEST BUY: NOW 500 mg L-glutamine capsules (nowfoods.com)

DOSAGE: Two 500-mg capsules three times a day between meals for one to two months. For the fastest effect, let the capsules dissolve under your tongue.

Beat a sweet tooth with ...

GYMNEMA SYLVESTRE

HOW IT WORKS; Derived from a plant that grows wild in India and Africa, gymnema has been shown to reduce the ability to taste sweetness. Gymnema molecules are similar to glucose and fill the taste bud receptors on the tongue, making it seem like you've gotten a sugar fix. One landmark study, published in the journal Physiology & Behavior in 1983, found that people who took a dose of gymnema had a diminished perception of sweetness and, when offered snack foods, ate fewer calories than did control subjects.

BEST BUY: Puritan's Pride Gymnema Sylvestre tablets or Ayurceutics Gymnema capsules (puritan.com)

DOSAGE: 300 mg two to three times a day.

WATCH OUT: High doses have been linked with low blood sugar, so use in recommended amounts.

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GUGGUL

HOW IT WORKS: An Ayurvedic remedy, guggul is used for relieving joint pain, lowering cholesterol, and aiding weight loss. In a 1999 study conducted by researchers at the University of Nebraska and Beth Israel Medical Center in New York City, people who took 750 mg of guggul each day and did a combination of strength and aerobic training workout three times a week for six weeks lost an average of six pounds; those who exercised but did not take guggul lost only a half to one pound. "Guggul helps the body metabolize fat and improves thyroid function by increasing thyroid hormone levels," says John Douillard, Ph.D., director of the LifeSpa School of Ayurveda.

BEST BUY: Banyan Botanical Triphala Guggulu capsules (banyanbotanicals.com)

DOSAGE: 500 mg, three times a day for three months.

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REISHI MUSHROOMS

HOW IT WORKS: Sometimes harvested in the wild, where they grow on fallen logs, reishi mushrooms are used in Traditional Chinese Medicine to build strength and immunity and to fight fatigue. That may be why they work as weight loss supplements, says Hadady, adding that evidence of reishi's effectiveness in weight loss is only anecdotal. The logic: "It's much easier to stick with healthy eating and exercise if you feel strong and energetic," says Hadady. In Chinese medicine, reishi--also known as ganoderma--is used to treat hypertension