In 1936, Lewis Wolberg described the diet as "nonsensical, irrational and even dangerous". He noted that many people became ill on the diet and "casualties" were heavy around Hollywood. Carl Malmberg commented that it lacks in all the necessary minerals ( calcium, phosphorus and iron) and in vitamin A. The diet was criticized as early as 1935. The idea that grapefruit eaten before a meal acts as a "catalyst" to burn body fat has no evidence from biochemistry. It was re-popularized in the 1980s and nicknamed the "10-day, 10-pounds-off diet". Novelist Fannie Hurst was a notable devotee of the diet. The Mayo Clinic has disavowed the grapefruit diet. The diet then became a fad in Hollywood and spread throughout America. One rumour traces the diet to actress Ethel Barrymore, who is alleged to have paid William James Mayo and his brother 500 dollars (equivalent to $9,000 in 2022) to create a special diet for her. It was originally known in 1929 as the "eighteen-day diet", and featured 18 days of grapefruit, orange, toast, vegetable and egg combinations, totalling approximately 500 kilocalories (2,100 kJ). The grapefruit diet originated in the 1930s. The grapefruit diet lasts for 10 to 12 days followed by 2 days off. The grapefruit diet does not require exercise. The diet is based on the claim that grapefruit has a fat-burning enzyme or similar property. A typical breakfast menu usually includes bacon and eggs. The grapefruit diet is thus a low-carbohydrate diet. Sugar, fruits (other than grapefruit), sweet vegetables, grains and starchy vegetables are to be avoided. There are variations on the diet, although it generally consists of eating one grapefruit at each meal, along with meat, eggs, other foods that are rich in fat and protein, and certain vegetables. The Grapefruit diet (also known as the Hollywood diet and the 18-Day diet) is a short-term fad diet that has existed in the United States since at least the 1930s. Researchers speculate that sniffing grapefruit oil has an effect on liver enzymes, which can help to nix cravings and spur weight loss.For the "Weird Al" Yankovic song, see Running with Scissors ("Weird Al" Yankovic album). Studies show that the mere smell of grapefruit can aid in weight loss. Curbs cravings: There is something to be said about kick-starting your day with grapefruit.Low levels of insulin mean your body can more efficiently use food for energy rather than storing it as fat a candy bar can't claim that.
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