When it comes to obesity, it is considered to be overnutrition, and excess calories are converted into fat deposited in the body, resulting in weight gain. In fact, obesity is not a total overnutrition, but a lot of nutrient deficiencies.
One study showed:
Among the 379 obese patients, iron deficiency accounted for 43.9%, hemoglobin deficiency accounted for 8.4%, thiamine deficiency accounted for 29%, and vitamin D deficiency accounted for 68.1%. We recently studied a group of obese people and found that 91% of them are vitamin D deficient. Then there is the lack of nutrients such as folic acid, iron, and zinc. The lack of these nutrients affects the normal metabolism of obese people. There are many reasons for the unbalanced nutrition of obese people, including problems with dietary structure and insufficient outdoor activities.
After bariatric surgery, it has a certain effect on nutrient metabolism. Commonly used bariatric surgery include gastric bypass surgery and gastric cuff resection. The former is to detach the stomach under the esophagus and anastomose with the intestine. Food does not pass through the stomach and goes directly into the lower intestinal tract. The latter is the longitudinal resection of the stomach, and the continuity of the digestive tract does not change. Coupaye studied 86 postoperative changes in nutritional status in bariatric surgery patients who underwent gastric bypass and gastric sleeve resection, respectively. Although 90% of patients after gastric bypass surgery took the multivitamin preparation, their vitamin B12, vitamin D, and calcium concentrations were significantly lower than those of patients who underwent gastric cuff resection. We studied the changes in nutritional status after gastric cuff removal and found that trace elements were normal after surgery. Vitamin D rose to almost normal levels. This indicates that gastric cuff resection has a much lighter nutritional effect after surgery.
Hair loss after bariatric surgery is a very common phenomenon. Our recent study found that most hair loss occurs in the 3-4 months after surgery. This is often accompanied by significant weight loss. Hair loss usually improves naturally within six months after the onset. Attempts to supplement various nutrients to treat hair loss are often ineffective. The causes of hair loss after bariatric surgery are not well understood. Possible causes are related to rapid weight loss. At this time, the adipose tissue on the surface of the whole body disappears rapidly, and the thickness of the body surface decreases. The same changes occur in the scalp. The scalp becomes thinner and cannot support the hair, which can cause shedding. Men have shorter hair, so men lose much less hair than women. After a few months, the surface tissue structure stabilizes and the hair will grow again.