What Are The Dangers Of Low Calorie Diets?

More than 60 percent of Americans are overweight or obese, according to a 2010 study published in the "Journal of the American Medical Association." And when it comes to weight loss, many are looking for a quick fix and may consider a low-calorie diet. While you will lose weight following a low-calorie diet, there are some dangers associated with following this type of diet.

Inadequate Nutrient Intake

A very low-calorie diet usually has only 400 to 800 calories per day. To meet such severe calorie restrictions, many low-calorie diets require you to eat only one food item or eliminate whole food groups. Limiting your foods in this extreme way prevents you from meeting all of your nutritional needs and can lead to nutrient deficiencies, including electrolyte imbalances. Low-potassium levels can occur with poor nutrient intakes and a low blood potassium level can lead to an irregular heartbeat. Consult with your doctor before starting a low-calorie diet for weight loss to discuss your options.

Gallstone Formation

Gallstones commonly occur in people who lose weight following a low-calorie diet. It is theorized that rapid weight loss increases cholesterol levels in the gallbladder, decreasing its ability to contract and expel the bile into the small intestines, according to the Weight-control Information Network. If you are following a low-calorie diet under the supervision of your physician, discuss medication to prevent the formation of gallstones from rapid weight loss.

Gastrointestinal Distress

Low-calorie diets can also lead to gastrointestinal distress, such as nausea, constipation and diarrhea, according to the Weight-control Information Network, making you feel uncomfortable. Diarrhea with inadequate nutrient intakes can also cause electrolyte imbalances. In addition, the diarrhea can lead to dehydration and possibly seizures, notes the University of Maryland Medical Center.

Fatigue

Food supplies your body with energy. Most people need a minimum of 1,000 to 1,200 calories a day to support normal, everyday functions, according to the authors of "Krause's Food, Nutrition and Diet Therapy." Limiting your total caloric intake can make you feel tired and weak and limit your desire to do your daily activities.

Short-Term Results

When it comes to losing weight and keeping it off, you need to find a diet you can follow for the rest of your life. Most people regain the weight they have lost following a low-calorie diet, according to the Weight-control Information Network. Carrying additional weight can increase your risk of developing a chronic disease and increase your risk of early death.