With the advent of spring, it is time to take off heavy winter clothes and change into light spring clothes to show your figure. "Weight loss" and "healthy fat reduction" have been put on people's agenda, and businesses cater to the psychology of consumers and launch a variety of substitute food. No matter what you eat or drink, as long as the words "low calorie, easy to satiety and balanced nutrition" are popular with young people. In recent days, more and more citizens have been attracted by all kinds of meal substitutes, milkshakes, porridge and snacks in the online and offline markets. However, these are called "easy and healthy" and can "lie thin" after eating. Is it really reliable? "The substitute meal was not designed specifically for people who lose fat at first, but to solve the problem of having dinner without conditions in some special environments. Later, it gradually penetrated into people who lose fat and even ordinary people." A testing expert who has been engaged in the food industry for many years told reporters, "substitute food has now developed into a kind of energy control food specially processed and prepared to meet the nutritional needs of one or two meals during adult weight control. Substitute food is popular, which is closely related to young people's attention to weight management and pursuit of a healthy lifestyle." For the safety of these substitute foods, experts said that according to the recent experimental results of substitute foods conducted by the market supervision department of Jiangsu Province, no prohibited ingredients such as fenfluramine, sibutramine and ephedrine were detected in the six popular substitute food samples purchased from well-known e-commerce, wechat merchants and supermarkets. Experts told reporters that at present, there is a lack of national mandatory standards for substitute food, only group standards. Most prepared food substitutes are produced according to the standard of solid drinks, while others are produced according to the standard of pastries and convenience foods. However, some low-fat coarse grains are used in the ingredients to replace flour, improve dietary fiber and increase satiety. The product packaging claims low sugar, low fat and low calories. Therefore, to a certain extent, there are inevitably some problems in the substitute food industry, such as uneven product quality, over marketing, false publicity and so on, and the effects are also different in practical use. Whether substitute food has the effect of reducing fat has always been a controversial issue. Is it an "IQ tax"? Food industry experts said that according to the detection of the nutritional components of the six sampled substitute foods, the detection value is roughly equivalent to the marked value, both within the standard range. In the process of fat reduction, energy intake can be calculated by looking at the label. But fat reduction still depends on people's eating habits and life attitudes to a greater extent. If you eat substitute meals, but you can't keep your mouth shut and step your legs, it's still difficult to achieve the effect of fat reduction. Experts believe that substitute meals are only a "tool" in the process of fat reduction. In addition, the contents of nutrients such as vitamins, calcium, magnesium, iron and zinc of each substitute meal variety are different. Eating the same substitute meal for a long time is easy to cause malnutrition. At the same time, experts remind the public that substitute food can not be eaten for a long time. Substitute food is mainly aimed at overweight and obese people. In fact, ordinary people who reduce fat do not need to use substitute food. Proper diet control and exercise are the healthiest. It is not recommended that pregnant women, lactating women, infants, children, patients and the elderly eat substitute food. (outlook new era)