This diet restricts your intake of carbohydrates like sugars and starches (breads, pasta, etc.) and replaces them with protein and fat. Studies show that low-carb diets reduce your appetite and make you eat fewer calories and lose weight pretty much effortlessly, as long as you manage to keep the carbs down (4).
â Lipids are a large and varied group of biological molecules. Lipids are made mostly from carbon and hydrogen atoms and are generally not soluble in water. â The common categories of lipids are fats, oils, and waxes. â Lipids can be used to store energy. Some lipids are important parts of biological membranes and waterproof coverings. â Steroids synthesized by the body are lipids as well. Many steroids, such as hormones, serve as chemical messengers.
Ultimately, the energy that keeps us moving comes from the food we eat. However, we cannot use energy directly from foodâit must first be converted into adenosine triphosphate, or ATP, the immediate useable form of chemical energy utilized for all cellular function. The body does store a minimal amount of ATP within the muscles, but the majority is synthesized from the foods we eat. Food is made up of carbohydrates, fats and proteins, and these nutrients are broken down into their simplest forms (glucose, fatty acids and amino acids) during digestion.