You hear about them everywhere... "superfoods"-- they're natural and nutrient dense- packing a punch.
One author offers her take on four popular supplements that claim to give you more energy and help you lose weight.
"I have been taking supplements for years," said supplement user Suzette Lang.
"I mean look at me I have so much energy and I swear it's because of all these superfoods I take,” said nutritionist, author and personal trainer Kimberly Olson.
Olson sat down to reveal some of her favorite slimming superfoods.
You've probably heard of green coffee bean extract.
"That is absolutely hands down out of all of them my favorite," Olson said.
The craze over green coffee bean took over after getting a stamp of approval from Mehmet Oz, M.D. who goes by the name "Dr. Oz" on TV.
Oz shares his favorite superfoods with viewers on his syndicated talk show.
The good doctor said you should buy green coffee bean with 45 percent chlorogenic acid- the key ingredient.
"When you take it before a meal the chlorogenic acid inhibits your body from using you food as fuel and forces your liver to metabolize your stored fat and use that as your energy source," Olson said.
"Well everybody's looking for hope in a bottle," said registered dietitian Carol Wolin-Riklin.
Wolin-Riklin said before you jump on the bandwagon, you should read the label carefully.
"The one thing you have to be careful of is every brand of green coffee bean is different some have fillers such as caffeine and other products added to it so it's not always the same product in the bottle," she said.
Another superfood to add to the mix - raspberry keytone.
Olson refers to it as the triple threat.
"It's going to help your body burn more calories at rest. it inhibits how much fat it stored in your body and it breaks down fat cells," Olson said.
Lang swears by it.
"It's really picked up my metabolism,” Lang said. “I have energy and it really helps suppress those urges to kind of pig out."
A superfood that has been around for generations is Moringa tree.
Known around the world as the miracle tree - it's believed to reduce cravings, curb the appetite and more.
"It has over 45 different types of antioxidants ounce for ounce in has 25 times the amount of iron found in spinach 15 times the amount of calcium found in milk and 9 times the amount of protein found in yogurt," Olson said.
Fans of Garcina cambogia believe in what Dr. Oz calls “the holy grail of weight loss supplements.”
"It's been found to be three times more effective than diet and exercise alone," Olson claims.
"No matter which supplements and vitamins you decide to take it's recommended you discuss each and every one of them with your doctor to make sure that they're right for you
"Sometimes they do interact with blood pressure medications cholesterol medications heart medications," Wolin-Riklin warns.