Starch is a high-energy carbohydrate, which plants use as a source of energy. Starch can be found in potatoes, pasta and wheat-based foods. Carbohydrates are a potent form of energy, but eating too much can cause people to gain weight. As a rule, dieters should avoid eating too much starch if they want effective weight loss.
Starch and carbohydrates are completely absent in meat products. Beef, poultry and lamb are animal-derived products with zero carbohydrates. Is it possible to live on meat alone? Maybe. Inuits live on a carbohydrate-free diet of fish and meat without incurring health problems.
Fish is starch free and a source of protein. Not only does fish lack starch, but it's also rich in omega-3 fatty acids and low in saturated fat. Countries known for their healthy elderly people, such as Japan, largely subsist on marine-based diets.
For people trying to avoid starch and carbohydrates, cheese may be a wise option. However, cheese is high in fat and can cause digestive problems for lactose-intolerant people.
Some vegetables are high in starch, such as corn, squash and yams. Green watery vegetables, like celery, zucchini, asparagus and cucumber have zero starch. Not only does celery lack starch, it's also a negative calorie food.