It is well accepted that the related decline in physical activity and obesity fast food. But the proof that these are the main causes of obesity is largely circumstantial. To stimulate debate, experts suggest 10 other possible causes of obesity, and went in the International Journal of Obesity.
1. Lack of sleep. Little sleep can increase body weight. Today, many get less shut eyes like never before.
2. Pollution. Hormones control body weight. And most pollutants affect our hormones today.
3. Air conditioning. You have to burn calories if your environment is too hot or too cold for comfort. But more than ever, people live and work in temperature-controlled homes and offices.
4. Decrease smoking. Smoking reduces weight. People smoke much less than what they were.
5. Medicine. Can different drugs, including a large number of contraceptives and steroid hormones and drugs against diabetes and certain antidepressants, antihypertensives and cause weight gain. The use of these drugs is booming.
6. Population age, and race. Middle-aged and Hispanics tend to be more obese young Americans of European origin. Americans older and whiter.
7. Older mothers. There is some evidence that older women when giving birth and an increased risk of childhood obesity. Women gave birth in the elderly and the elderly.
8. Grandparents environment. May have effects back two generations. Environmental changes that have severe obesity in May "by paying vibes episode fetally" obesity visit their grandchildren.
9. Obesity linked to fertility. There is some evidence obese people are more fertile than lean. If obesity has a genetic component, and should be the percentage of obese people in the population increases.
10. Some obese unions. Obese women tend to marry obese men, and if obesity has a genetic component, and there will be more people continue to suffer from obesity in the next generation.
These factors contribute to the other deserves more attention and study. More explanations are: the virus that stimulates fat, increased depression in childhood and less consumption of dairy products, and hormones used in agriculture. What do you think can be attributed to the epidemic?
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