Why so Many People Eat Junk Food free essay sample

People may be wondering why sometimes they eat a little bit of junk food; suddenly they want a little bit more. They cannot control their hands from putting food in their mouth. Such things are not because people feel that food is good, but because of a series of unconscious actions that happen in human bodies. People like to eat junk food as a result of genes that they inherited from ancestors. Back 10,000 years ago, when the ancestors ruled these lands, they were living totally different from now. The primitive man could go for days or weeks without eating anything, they were always hungry and starving the majority of the time. The only way they could survive was to eat lots of food at one time with plenty of sugar and fat, also meats. To be sure that they would be alive until the next time of eating, which craving is made by natural selection where those who did not crave it died. We will write a custom essay sample on Why so Many People Eat Junk Food or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Undoubtedly, Junk food is often high in sugar, salt, white flour, and fat, particularly saturated fat. It is often heavily processed and prepackaged, making it easy to prepare and consume. A few examples of foods often considered to be junk food include fast food, sweets such as ice cream, candy, donuts, and prepackaged treats, soda, and potato chips, among many others. Most people have no trouble identifying junk food; it is when they want to stop eating junk food that the trouble starts. (the ingredients from KFC and McDonald’s official website) According to YouDao encyclopedia, scientists found that when people eat enough food, the excess sugar and fat from that food will turn the biological receptor off in the human brain, the receptor is used to receive the signal from the stomach and tells the brain whether it is hungry or full. That is, when people eat extra sugar from junk food, they will not feel full mentally even though they are actually full. Thus all of these processes are going in people’s subconscious. In other words, people enjoy eating junk food not only because it tastes good, but also because there are certain genes in human blood that urge people to choose that junk food. When junk food goes through the mouth into the stomach, plenty of sugar and fat will be absorbed; hence the full-feeling signal will be cut off. Eventually, as a consequence, people enjoy lots of junk food or even become a troubleaddicted.