A liquid protein diet is a fluid-based nutritional plan composed of protein-rich beverages, such as protein shakes, that are fortified with essential minerals and vitamins. Generally, this type of dietary regimen is low in carbohydrate intake, states Newsmax.
A liquid protein diet comes in various forms, including meal replacement drinks, soup diets and other high-protein supplement products. As substitutes for a proper meal, this restrictive diet promotes short-term weight loss due to the decreased caloric intake. On a daily basis, a liquid protein diet in supplement form is said to only provide between 400 to 800 calories, compared to the typical 3,500 daily calories consumed by the average individual, notes Newsmax.
Although liquid sustenance from supplements is designed to be nutritionally adequate, some products lack the required amount of minerals to support a person's daily dietary needs. A liquid protein diet is also insufficient in fiber content, which can result in constipation. Additionally, dieters may experience side effects from consuming excessive amounts of protein.
Some undesirable effects of a liquid protein diet include queasiness, lightheadedness, headache and confusion. Individuals may also feel devitalized from the reduced daily calories. A healthier and more balanced approach is to introduce other supplement variants, such as whey powder, beet root, bananas, fat-free yogurt and celery, along with the liquid protein diet.