Healthy weight loss occurs at a rate of one to two pounds per week, according to dietitian Joanne Larsen. Because there are 3,500 calories in one pound of fat, a rate beyond this amount is usually associated with a loss of bodily fluids or other tissues. According to nutrition specialist Monica Reinagel, the body can fluctuate anywhere between three to five pounds a day and some weight loss programs try to enhance these fluctuations for profit.
Increased Urination
An adult male body is made of 60 percent water, according to Allegheny University doctor Jeffrey Utz. This means that excretion of water through urination can cause the body to lose weight fast. A review by the University of Messina’s Department of Internal Medicine explains that caffeine is widely accepted as a diuretic; consuming caffeine can cause you to urinate more frequently and lead to dehydration if measures are not taken to consume non-caffeinated fluids, like water.
Sweating
Hot weather can cause your body’s internal cooling system to activate. While the system is designed to cool down the body, it can also lead to an increase in fluid excretion and dehydration.
Low-Carb Diets
Diets that are low in carbohydrates, like Atkins, cause rapid weight loss initially because the body stores three grams of water for every gram of carbohydrate consumed, says Larsen. If you are not eating enough carbohydrates, your body will deplete its water storage sites and begin to destroy your muscles. A healthy diet consists of 60 percent carbohydrate, 25 percent fat and 15 percent protein.
Very Low-Calorie Diets
Diets that contain fewer than 1,200 calories a day yield fast weight loss results because the body is losing fat, water and muscle. These diets drain the body of its stores of carbohydrate and water, eat away at body fat and lower the metabolism as they destroy muscle mass. By adding regular exercise to the mix, such dieters can easily drop the calories that are available for normal body function down to 700.
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