(2) Inducing gallstones: Dieters' low-calorie and low-fat diet will put patients at risk of gallstones. The reason is that the gallbladder can't deliver enough bile to the small intestine when the hunger is caused by the sudden decrease of fat and cholesterol intake. Cholestasis and supersaturated bile salts coexist, which is easy to form gallstones. One of the ways to prevent the formation of stones is to make the gallbladder fully contract and empty at least 1 time every day. Dieters should consume at least 65,438+0,200 kilocalories every day, and a meal every day must contain 5-65,438+00g of fat, which can stimulate the gallbladder to empty completely and prevent the formation of gallstones.
(3) Damage to brain cells: A new research topic shows that dieting and losing weight has great damage to brain memory function cells, which will lead dieters to become more and more forgetful in the future and even unable to cope with simple calculations. Physiologists believe that the result of dieting is to make the body lack nutrition, seriously damage brain cells and directly affect memory and intelligence. The researchers studied the effects of dieting on the brain health of 55 women. All women participating in the experiment should be evaluated on time in terms of weight, body shape and behavioral response. The results showed that all 55 dieting women had memory loss and slow response. Further research found that the longer you go on a diet, the more you lose weight, and the slower you are in number recognition, behavior and intelligence.
(4) Osteoporosis: The American Institute on Aging investigated 3683 women over 67 years old, and plotted their weight at the age of 50, their weight changes in the next eight years and the incidence of hip fractures. The results show that if the healthy women lose more than 10% at the age of 50, the probability of hip fracture at the age of 65 is nearly 1 times higher than that of women with stable weight. The incidence of hip fracture is higher in thin women. Why are women who are thin or lose too much weight prone to hip fractures? "Menopause", especially for postmenopausal women, due to the cessation of ovarian function, the production of estrogen is greatly reduced, and the loss of bone calcium is more serious, which is easy to cause osteoporosis and fractures. Adipose tissue is an important place to produce estrogen in the body except ovaries. Adipocytes can be processed to convert raw materials provided by adrenal cortex into estrogen. Therefore, women who are thin or lose too much weight are often prone to osteoporosis and fractures because of their low estrogen levels.
(5) According to the statistics of the clinical data of alopecia hip joint, the number of alopecia caused by weight loss is on the rise, among which 20% ~ 30% are young women aged 20 ~ 30. Because the main component of hair is protein, there are many trace elements such as zinc, iron and copper. Vegetarians only eat vegetables, fruits and flour, and their intake of protein and trace elements is insufficient, which leads to serious malnutrition and hair loss.