The authors wanted to compare low-fat vs. low-carb diets, but they also wanted to study genetic and physical makeups that purportedly (their word) could influence how effective each type of diet will be for people. Previous studies had suggested that a difference in a particular genetic sequence could mean that certain people will do better with a low-fat diet. Other studies had suggested that insulin sensitivity may mean that certain people will do better with a low-carb diet.
Want a flatter stomach? Look in your glass—milk and soda are two major causes of tummy inflation. Approximately 65 percent of the human population has a reduced ability to digest lactose after infancy, which means that your glass of warm milk before bed may be the reason you wake up with too-tight pajamas. And when it comes to soda, both regular and diet are belly busters both from the sweeteners used and the carbonation. Try eliminating these from your diet and see if it helps flatten your tummy.
Luckily, that doesn’t mean you need to dedicate even more time exercising. In fact, high-intensity interval training (HIIT) workouts can slash the time commitment while boosting results. HIIT workouts last about 20 minutes and combine bursts of super-intense exercise with slower recovery phases. This type of workout has been found to help people lose more fat once the workout is over, even though they burn less calories during the workout (since workouts are shorter) and also build muscle, rather than break it down the way conventional cardio does. (3)
Gastrointestinal disorders are another common cause of unexplained weight loss – in fact they are the most common non-cancerous cause of idiopathic weight loss.[citation needed] Possible gastrointestinal etiologies of unexplained weight loss include: celiac disease, peptic ulcer disease, inflammatory bowel disease (crohn's disease and ulcerative colitis), pancreatitis, gastritis, diarrhea and many other GI conditions.
I built this protocol for people who simply won’t take my advice to be patient and eat the Bulletproof Diet while using Bulletproof Intermittent Fasting. It uses biohacking techniques I pioneered on myself to reduce – but not eliminate – the risks of rapid fat loss. It prevents the metabolic harm and brain fog that come with very low-calorie diets (or multiple day fasts), and it does everything I can think of to maintain health in the face of additional toxins.  This is also not intended for people who are already fairly lean (10-14% body fat).  It is designed for obese and severely overweight people who want to lose fat as fast as possible.
Regardless of where you stand, the fact is that the Paleo way of eating is becoming increasingly popular, as are "nutritional reset" programs based upon Paleo, such as the Primal Blueprint 21-day Challenge hosted by Marks Daily Apple, or the Whole30 program, popularized by the New York Times bestseller, It Starts with Food: Discover the Whole30 and Change Your Life in Unexpected Ways (Est. $15).
The South Beach Diet is also considered low-carb, but it's not as restrictive as Atkins in its later phases. In fact, even in the early phases of the South Beach Diet, small servings of complex, non-vegetable carbs are allowed. South Beach earns high praise for weight loss and as an overall healthy way of eating, but gets panned for its complicated meal plans and time-consuming recipes by both users and experts. The ingredients in its recipes can jack up your grocery bill as well. Still, it's popular for those who love to cook, or prefer meals that aren't just a hunk of meat and a vegetable (or two).

If food contains the word “veggie,” it’s not automatically healthy. Don’t let marketing gimmicks fool you: The majority of foods are mislabeled and not as healthy as they claim to be, veggie chips included. You’re a lot better off eating fresh vegetables than synthetic and processed versions. You can always try making your own veggie chips by slicing veggies like kale, carrots, zucchini, and squash, really thin, misting them with olive oil, and then baking them in the oven. Here are 25 more weight-loss myths you need to stop believing.
Fruits like berries, cherries, apples, and oranges are high in quercetin, a natural compound that reduces inflammation in the belly. And if you put a bowl of the good stuff right where you can see it in your kitchen, you’re more likely to reach for it when you want a snack. These are the 10 reasons why apple cider vinegar is brilliant for slimming down.
Americans are getting less sleep than ever these days and it’s taking a toll on our health—most visibly on our waistlines. Losing just 30 minutes of sleep per night can make you gain weight, according to a study done by the Endocrine Society. Worse, that weight is more likely to go straight to your tummy. Instead, the researchers found, the best sleep cycle is one that follows your natural circadian rhythms, which means sleeping and waking around the same time as the sun. Here are the 7 ways to banish belly bloat in your sleep.
×