As we mentioned above, eating in a calorie deficit is key. Jim recommends eating 500 calories less than your total daily energy expenditure, or TDEE. This is the number of calories you burn in a day, which is based on factors like age, height, sex, and activity level. To calculate what this number is and what your calorie target should be to lose weight, use this formula. Just make sure you don't go below 1,200 calories a day for women; in a previous interview, Jim said eating any fewer calories than that can slow down your metabolism and result in negative side effects like low energy, loss of hair, hunger pangs, and a negative impact on your menstrual cycle.
Jim said people can healthily lose half a pound to two pounds a week. In a month, that could add up to four to eight pounds lost. Since one pound of fat equals 3,500 calories, to lose one pound a week, you would have to burn approximately 500 extra calories a day. This can be achieved through eating in a healthy calorie deficit or working out to burn extra calories (or a combination of both). Other lifestyle factors also play a role. Getting enough sleep will ensure your body recovers well and that you'll be energized for your workouts the next day. And too much stress increases the stress hormone cortisol, which can increase your cravings for caloric refined carbs and comfort food, which will prevent you from losing weight (especially in your belly). Make sure, in addition to eating in a calorie deficit, that you're also getting at least seven hours of sleep a night and managing your stress.
Dairy products contain varying amounts of lactose (milk sugar), which slows down weight loss. What’s more, part of the protein in milk generates a significant insulin response, which can have the same effect. Consequently, cutting back on dairy products may accelerate weight loss. This applies especially to dairy products typically lacking in fat, such as regular milk and various yogurts, but be careful with full-fat dairy such as cream and cheese all the same. And don’t forget whey protein powder, which is pure milk protein.
All meals are important, but breakfast is what helps you start your day on the right track. The best, heartiest breakfasts are ones that will fill you up, keep you satisfied, and stave off cravings later in the day. Aim to eat anywhere between 400 and 500 calories for your morning meal, and make sure you're including a source of lean protein plus filling fat (e.g., eggs, unsweetened Greek yogurt, nuts, or nut butters) and fiber (veggies, fruit, or 100% whole grains). Starting your day with a blood sugar-stabilizing blend of nutrients will help you slim down without sacrifice.
Choose Liquid Calories Wisely. Sweetened drinks pile on the calories, but don't reduce hunger like solid foods do. Satisfy your thirst with water, sparkling water with citrus, skim or low-fat milk, or small portions of 100% fruit juice. Try a glass of nutritious and low-calorie vegetable juice to hold you over if you get hungry between meals. Be careful of alcohol calories, which add up quickly. If you tend to drink a glass or two of wine or a cocktail on most days, limiting alcohol to the weekends can be a huge calorie saver.
The second concept I coined is called “diet confusion.” And I name it after the similar concept in weight lifting called muscle confusion. The idea behind diet confusion is, you have to keep your body off-kilter. So by changing the type of foods that you eat, the frequency of the foods that you eat, you can keep your metabolism revved up. Instead of eating the same food all the time and your body gets adjusted to that same food and your metabolism no longer is challenged. Those two principles are really the driving principles of Shred and why people are finding such success.
To encourage ketone production, the amount of insulin in your bloodstream must be low. The lower your insulin, the higher your ketone production. And when you have a well-controlled, sufficiently large amount of ketones in your blood, it’s basically proof that your insulin is very low – and therefore, that you’re enjoying the maximum effect of your low-carbohydrate diet. That’s what’s called optimal ketosis.
If you’ve been eating fast food for years, get real about your approach: You’re probably not going to stick to an organic, gluten-free, paleo overhaul for very long. "You want to change as little as possible to create calorie deficit," says Dr. Seltzer, who insists the best way to support sustainable weight loss is to incorporate small changes into existing habits. So instead of giving up your daily BLT bagels in favor of an egg-white wrap, try ordering your sandwich on a lighter English muffin. Or say you eat a snack bar every afternoon: Swap your 300-calorie bar for a 150-calorie alternative. "Your brain will feel the same way about it, so you won’t feel deprived," he says.
World-class weight-loss expert and author of Shred: The Revolutionary Diet Dr. Ian Smith refers to this new diet as his secret weapon because it works unlike anything else he’s seen. As its name implies, the Shred Diet isn’t only about weight loss — it’s about reshaping your body and changing the way your clothes fit. In only six weeks, Dr. Smith claims this plan can help you lose up to 4 inches, 2 sizes and, incredibly, up to 20 pounds!
The trick here is not only to avoid all obvious sources of carbohydrate (sweets, bread, spaghetti, rice, potatoes), but also to be careful with your protein intake. If you eat large amounts of meat, eggs and the like, the excess protein will be converted into glucose in your body. Large amounts of protein can also raise your insulin levels somewhat. This compromises optimal ketosis.
"It’s easy to become impatient and frustrated when you’re trying to lose weight and haven’t seen the results yet. But be realistic – you won’t see the affect overnight. Your brain’s wiring plays a huge part in resisting changes in lifestyle, and it takes time to establish new habits – up to 12 weeks. Stick with it for at least eight weeks and you should notice a change."