Very low calorie diets provide 200–800 calories per day, maintaining protein intake but limiting calories from both fat and carbohydrates. They subject the body to starvation and produce an average loss of 1.5–2.5 kg (3.3–5.5 lb) per week. "2-4-6-8", a popular diet of this variety, follows a four-day cycle in which only 200 calories are consumed the first day, 400 the second day, 600 the third day, 800 the fourth day, and then totally fasting, after which the cycle repeats. These diets are not recommended for general use as they are associated with adverse side effects such as loss of lean muscle mass, increased risks of gout, and electrolyte imbalances. People attempting these diets must be monitored closely by a physician to prevent complications.
The ketogenic diet has been studied in at least 14 rodent animal models of seizures. It is protective in many of these models and has a different protection profile than any known anticonvulsant. Conversely, fenofibrate, not used clinically as an antiepileptic, exhibits experimental anticonvulsant properties in adult rats comparable to the ketogenic diet. This, together with studies showing its efficacy in patients who have failed to achieve seizure control on half a dozen drugs, suggests a unique mechanism of action.
Erin Palinski-Wade, RD, CDE, and author of 2 Day Diabetes Diet and Belly Fat Diet For Dummies, feels similarly concerned. "A restrictive diet that does not promote the nutritional value of foods and is only focused on calories, such as the Military Diet, may promote weight loss at the expense of health," she says. "This diet is not sustainable and any weight loss will most likely be regained quickly." She even cautions that the diet may ultimately lead to weight gain down the road. "A drastic reduction in calories will promote weight loss, however restricting calories this low may promote a loss of both lean body mass (muscle mass) as well as fat mass, which makes it easier to regain the weight as soon as you return to normal eating habits."
I used to be 100 pounds heavier than I am now. My eating habits were out of control and pretty much the epitome of mindless. I am A.D.D., I have two kids under four, and I work full time, so eating without constant distractions just doesn't happen. But over the years I’ve learned what it takes for me to lose my weight... and most importantly, keep it off.