60秒科学:Diet and the Brain
Diet and the Brain
A study in the Proceedings 1 of the National Academy of Sciences finds that brain chemicals linked to addiction 2 are in play with a high-sugar diet, and a study in the Archives of Internal Medicine shows that a high-carb diet had lasting 3 mood-elevation effects. Cynthia Graber reports
What you eat affects more than physical health. Two new studies have added to the growing evidence linking the stomach and the brain.
In a report in the Proceedings of the National Academy of Sciences, researchers studied how junk food can trigger addiction behaviors. The brain chemical corticotropin-releasing-factor, CRF, is linked to motivation, and plays a role in drug and alcohol withdrawal 4 and relapse. Researchers had rats eat normal food, then binge on sugar and chocolate-flavored snacks. When the rats went off the junk, they expressed CRF, just as do rats going through withdrawal. The rodents 5 also had more anxiety and were less interested in normal food.
Another study, published in the Archives of Internal Medicine, looked at human moods. Researchers followed 106 overweight people. Half followed a low-carb, very high-fat diet, and half ate a high-carbohydrate, low-fat diet. After a year, both groups averaged about 30 pounds weight loss. And though both groups’ moods improved after two months, only the low-fat, high-carb group kept up the good feelings. So what we eat doesn’t just go to our waists—it also goes to our brains.
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- He stole money from his parents to feed his addiction.他从父母那儿偷钱以满足自己的嗜好。
- Areas of drug dealing are hellholes of addiction,poverty and murder.贩卖毒品的地区往往是吸毒上瘾、贫困和发生谋杀的地方。
- The lasting war debased the value of the dollar.持久的战争使美元贬值。
- We hope for a lasting settlement of all these troubles.我们希望这些纠纷能获得永久的解决。
- The police were forced to make a tactical withdrawal.警方被迫进行战术撤退。
- They insisted upon a withdrawal of the statement and a public apology.他们坚持要收回那些话并公开道歉。