Stephen Colbert may be on to something. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for 12-weeks. The only difference between the groups was what they were given to eat as an afternoon snack. One group ate 220-calories of pretzels while the other group munched on 240-calories worth of pistachios. Just four weeks into the study, the pistachio group had reduced their BMI by a point, while the pretzel-eating group stayed the same, and their cholesterol and triglyceride levels showed improvements as well.

“There are many diet plans on the market today that promote good health,” says Emily Kyle, RDN, who is in private practice in Rochester, New York. “The key is finding one that does not cause you stress or agony.” Ask yourself questions such as: Would the diet guidelines make you happy? Anxious? Stressed? Are you able to follow them long term? “Factors such as enjoyment, flexibility, and longevity should be strongly considered,” adds Kyle.


Drinking plenty of water is essential for overall health, and is a great way to boost your weight-loss efforts. But if you’re getting your H2O from cheap bottled water, the bottle itself could pose a problem; Bisphenol A, commonly referred to as BPA, has been linked to obesity, and it’s still found in many cheap plastics. A 2011 Harvard study found that adults with the highest concentration of BPA in their urine had significantly larger waists and a chance of being obese than those without as much of the chemical in their systems. So if you must drink store-bought bottled water, check to see if the bottle is BPA-free. And whatever you do, don’t reuse the same bottle; constantly refilling the same plastic bottle can cause BPA to leak into the water.
Sure, there's your one friend who swears by the Taco Cleanse. And that other friend who ate nothing but broccoli soup for a month and dropped 20 pounds, found the love of her life, and got promoted at work. But before you start blending 80 stalks of broccoli into a cup or crunching your way through a crate of tacos, check out which diets are backed by science. Because don't you want to try one that will do the trick for you?
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