In a recent study, the University of Cambridge analyzed the relationship between people's eating habits and cancer in more than 65,438+00 countries. The results show that the more starchy food you eat, the lower the incidence of small intestine, colon and rectal cancer. For example, the incidence of colon cancer in Australians who live on meat food is four times higher than that in China who live on starch food.
The so-called starchy food mainly refers to staple foods rich in carbohydrates, such as rice, corn and wheat. And root vegetables, such as potatoes, yams, potatoes, etc. In addition, it also includes various fruits with more starch, such as beans and bananas.
The researchers pointed out that starchy foods mainly inhibit intestinal cancer in two ways: First, after starch enters the intestine, a series of reactions help to increase feces, promote colon excretion, and accelerate the excretion of carcinogenic metabolites. Secondly, starch can produce a large number of butyrate through the action of intestinal fermentation enzymes. Experiments show that butyrate is an effective cancer cell growth inhibitor, which can directly inhibit the proliferation of bacteria in the large intestine and prevent the generation of cancer-causing cells on the inner wall of the large intestine.
How to choose starchy food in life? For busy office workers, roughing whole grain foods such as cereal bread in supermarkets is the first choice. Pay attention to recognition when buying cereal bread: if the first ingredient in the ingredient list is cereal, it means that its cereal content is really rich; If the cereal ingredient ranks behind other ingredients or sugar, it means that there are not many cereal ingredients in this food. Another way is to hold the bread in your hand. If you feel that bread is tight and has obvious grains, it is bread rich in grains.
Besides cereal bread, rice made of noodles, bean jelly, pancakes, steamed dumplings and buckwheat is also a good choice. Five-grain porridge rich in B vitamins and vitamin E, such as Laba porridge, Babaolian porridge and lotus leaf porridge, is more suitable for middle-aged and elderly people.
The earth we live in, like the mother of human beings, is amiable most of the time. Spring, birds and flowers; In summer, the sun shines high; In autumn, a cool breeze blows gently; In winter, it is covered with snow. However, once Mother Earth gets angry, it will cause devastating damage. In order to let us calmly and tactfully deal with disasters, the school organized interesting popular science activities.
First, we watched a popular science movie. I will never forget some scenes in the movie: when the tsunami broke out, the surging tide rushed to the buildings on the shore like a fierce lion; When the earthquake came, the house first shook violently, and then the wall collapsed instantly, which was a mess; When the fire comes, the raging fire devours everything around it like a wild animal.
Next, we lined up neatly and went to the playground to participate in the "crossing the line of fire" activity. The staff said: As long as the steel goes around the steel pole to the finish line and does not touch each other, it is victory. If the steel ring touches the steel pole, it will call the police. When the alarm sounds, it means that the game has failed. A seemingly simple game is actually a psychological quality. When I walked slowly around the steel pole with a steel ring in my hand, the steel ring was attracted by the steel pole with a slight shake of my hand, and the alarm sounded, and I failed. Then, one after another failed. In the end, Liu Wang in our class lived up to expectations and won success with his composure.
Today's popular science activities, I not only learned some principles and common sense of tsunami, earthquake and fire, but also learned how to deal with these disasters correctly and how to escape in the face of disasters. What a big receipt!