Living in a city, busy and stressful, with parents rushing to work and children going to kindergarten or elementary school, breakfast is usually a simple affair, or settled outside. From a nutritional point of view, breakfast is extremely important, it is related to the morning activity, as the saying goes, breakfast full, a day full. The following is to say that these 5 kinds of breakfast, is detrimental to the child’s IQ, must not be given to the child to eat. Leftover breakfast Leftovers overnight, vegetables may produce nitrite (a carcinogenic substance), eat in will be harmful to human health, so try not to eat the leftover vegetables again. Western-style breakfast This high-calorie breakfast can easily lead to obesity, fried food long-term use will also be harmful to the body. Use Western-style fast food for breakfast, lunch and dinner must be consumed low-calorie food. In addition, this Western-style breakfast has the problem of unbalanced nutrition, calories are relatively high, but often lack of vitamins, minerals, fiber and other nutrients. If you choose Western-style fast food for breakfast, you should add fruit or vegetable soup, etc., to maintain a balanced nutrition and ensure the intake of various nutrients. Doughnut breakfast Food after high-temperature frying, nutrients will be destroyed, but also produce carcinogenic substances; and doughnuts are also relatively high in calories, grease is difficult to digest. Breakfast must have vegetables or fruit. Snack breakfast Most snacks are dry food, for the body in the morning in a semi-dehydrated state, is not conducive to digestion and absorption. And cookies and other snacks are mainly cereals, although they can provide energy in a short period of time, but will soon make the body feel hungry again. Snacking for breakfast can easily lead to nutritional deficiencies and a decline in physical fitness, causing the invasion of various diseases. Sports breakfast In order to rush, many parents buy breakfast in the roadside stalls to children, and then, let the children eat while walking. In fact, eating on the go is not good for gastrointestinal health, not conducive to digestion and absorption. Moreover, roadside stalls food hygiene is difficult to guarantee.