10 Possible Causes of the Obesity Epidemic
It’s well accepted that reduced physical activity and fast food are linked to obesity. But the evidence that these are the main causes of obesity is largely circumstantial. To stimulate debate, experts suggest 10 other possible causes of obesity, outlined in the International Journal of Obesity.
1. Lack of Sleep. Getting too little sleep can increase body weight. Today, many get less shut-eye than ever. Lack of sleep can increase stress on your body, play havoc with your hormones and lead to poor decision making.
2. Pollution. Hormones control body weight. And many of today’s pollutants affect our hormones. Having imbalances in your hormones can lead to your body retaining fat and having cravings for unhealthy foods.
3. Air conditioning. You have to burn calories if your environment is too hot or too cold for comfort. But more people than ever live and work in temperature controlled homes and offices. This is an interesting one.
4. Decreased smoking. Smoking reduces weight. People smoke much less than they used to and smoking was seen as way to calm your nerves. Now it is suggested that people who don’t smoke or who have quit smoking will turn to eating more food as a result. This doesn’t mean you should pick up a cigarette and light up!
5. Medicine. Many different drugs including contraceptives, steroids, hormones, diabetes drugs, some antidepressants, and blood pressure drugs can cause weight gain. Use of these drugs is on the upswing as health services prescribe more and more instead of looking for natural remedies to health issues.
6. Population age & ethnicity. Middle-aged people and Hispanic-Americans tend to be more obese than young European-Americans. Americans are getting older and more Hispanic.
7. Older mums. There’s some evidence that the older a woman is when she gives birth, the higher her child’s risk of obesity. Women are giving birth at older and older ages.
8. Ancestors’ environment. Some influences may go back two generations. Environmental changes that made a grandparent obese may “through a fetally driven positive feedback loop” visit obesity on the grandchildren.
9. Obesity is linked to fertility. There’s some evidence obese people are more fertile than lean ones. If obesity has a genetic component, the percentage of obese people in the population should increase.
10. Unions of obese spouses. Obese women tend to marry obese men, and if obesity has a genetic component, there will be still more obese people in the next generation.
These other contributing factors deserve more attention and study. Even more explanations include: a fat-inducing virus; increases in childhood depression; less consumption of dairy products; and hormones used in agriculture.