It depends on how much weight your aiming for. If you aim for a weight that is underweight for your age then you may get anorexic and get sick. It also depends on what you are avoiding from eating also. If your avoiding meat and protein you may get sick.
There are many sites that offer you diets for people with celiac disease. This is a disease of the colon. Gluten free diet is one of the best diets available that helps with the pain.
Diets that are too high in protein can lead to kidney strain, dehydration, and an increased risk of heart disease due to high saturated fat intake from animal protein sources. On the other hand, diets too low in protein can result in muscle loss, weakened immunity, and impaired recovery from injuries, as protein is essential for tissue repair and overall bodily functions. Both extremes can disrupt nutritional balance and negatively affect overall health.
because people are eating low-fiber diets which can cause chronic constipation that will increase the pressure in the colon and subsequently lead to diverticulosis
Diverticular disease
dogs have diets because some dogs are to fat or they are obese, but some dogs go on diets because the are sick or have a disease or some dogs go on fattening diets to grow fatter because they are to thin.
diabeties
per gram of carbohydrate, between 3-4 grams of water can also be sequestered in the body. It's for this reason that higher carbohydrate diets can lead to fluid storage while low carbohydrate diets can lead to decreased fluid storage.
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diabeties
The kinds of disease that can cause your foot bone to bend after strong medication is osteoporosis.