| "Foods get their calories from protein, fats, and carbohydrates. Most of the calories you eat come from carbohydrates and fats. Carbohydrates are starches and sugars, which are in foods like bread, pasta, and sweets. Low-carbohydrate diets (or low-carb diets, for short) cut down on the amount of calories you get from sugars and starches." "People on low-carb diets eat less bread, pasta, potatoes, rice, and cereals. They usually eat more vegetables, meat, fish, cheese, eggs, and nuts." "It is probably safe to go on a low-carb diet for up to one year, but doctors are not sure if these diets are safe for longer than that. Low-carb diets do not raise cholesterol levels for most people. In fact, they may improve your cholesterol level if you lose weight. Some people on these diets may have constipation, diarrhea, dizziness, bad breath, headaches, sleeping problems, or nausea." "If you have had a stroke or if you have diabetes, heart disease, high cholesterol levels, or kidney stones, or if you are pregnant, talk to your doctor
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