Count calories and macros. You’ll need to track calories and macros (grams of fats, protein and carbs) religiously, at least for the first month. First, use this calculator to determine your body fat percentage- and don’t suck in your gut when you measure your waist. Then, use this calorie calculator (be sure to select the lean mass formula) to determine your Total Daily Energy Expenditure.
If you want to lose weight, you’d better avoid special “low-carb” products that are full of carbs. This should be obvious, but creative marketers are doing all they can to fool you (and get your money). They will tell you that you can eat cookies, pasta, ice cream, bread and plenty of chocolate on a low-carb diet, as long as you buy their brand. They’re full of carbohydrates. Don’t be fooled.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.