Yes, there's a law that outlines the regulation of over-the-counter diet pills and other supplements, such as vitamins and herbal remedies, says Stephanie Karpinske, MBA, M.S., R.D. But no, supplement companies don't have to comply with the regulations (they're voluntary). Companies don't have to prove that their products are safe or that they work. Prescription diet pills, however, are considered a drug and have to go through the same strict guidelines and testing as any other prescribed drug.
People were not asked to count calories at all. Over the course of a year, both groups attended 22 classes reinforcing these very sound principles — and all participants had access to health educators who guided them in behavioral modification strategies, such as emotional awareness, setting goals, developing self-efficacy (also known as willpower), and utilizing social support networks, all to avoid falling back into unhealthy eating patterns.
A. "Because no matter how you drop pounds -- whether it's through dieting, exercise, or a combination of both -- you will inevitably lose some muscle, and that slows down your basal metabolic rate," explains Jackie Newgent, R.D., a New York City based nutrition consultant. Strength training with weights throughout your weight loss period can help preserve a lot but not necessarily all of it. "Then, when you regain the weight, you'll most likely put on more fat than muscle, which reduces your percentage of lean body mass, leaving you with a slower metabolism than you had prior to the weight loss."
Though they work through a variety of mechanisms, one thing weight loss pills have in common is tilting the calories in / calories out equation in your favor. Reducing calories in can come from supplement ingredients that suppress your hunger or reduce the amount of calories you actually absorb. Increasing calories out, which is the mechanism by which most weight loss pills function, can happen by increasing your energy expenditure or your fat oxidation.
“Don't like eating meat?” asks Ginger Hultin, RDN, a dietitian in private practice in Seattle and a spokesperson for the Academy of Nutrition and Dietetics. “Then don't be paleo! Travel a lot and rely on eating out? The DASH diet may end in frustration for you.” The bottom line: The diet you choose needs to be safe and effective, while taking into account your lifestyle.
A. It's not clear from studies whether eating slowly helps people eat less food. "It's worth a try, however, to slow down and tune in to knowing when the food has satisfied you -- especially if you are a fast eater," says Anne M. Fletcher, M.S., R.D., L.D., author of Thin for Life, Eating Thin for Life and Thin for Life Daybook (Houghton Mifflin Co.). As with any strategy, if it doesn't help, you can abandon it.
Ever find yourself at the end of a workout, and you've barely even broken a sweat? Real-time feedback from a wearable device that tracks heart rate or calories burned may inspire you to push yourself harder. (Plus, you'll feel more connected to your training.) Try the Fitbit Charge HR ($140; amazon.com), Withings Pulse 02 ($100; amazon.com), or the Intel Basis Peak ($173, amazon.com).
Why does this popular plan work? For one thing, it pushes wildly healthy staples to the forefront (think: nuts, vegetables, fruit, olive oil). For another, it's simply delicious, thanks to it's focus on fresh, simply prepared dishes like grilled fish with lemon and whole wheat pita with hummus. Science agrees: One meta-review of 16 studies, found the eating M.O. helped those on it lose an average of 8.5 pounds.