Obesity is a choice
Obesity is a choice. What a horrible thing to say! Let me put it more mildly: today I will argue that the claim "obesity is not a choice" is wrong.
Let's hear what Dr. Robert Lustig, pediatrician and obesity expert, has to say:
It is unfair and unhelpful to blame personal behaviors, especially a lack of self-control, for the country's rising obesity rates, says Dr. Robert Lustig, a pediatrician and nationally renowned obesity expert.
"Everyone's assuming you have a choice, but when your brain is starving, you don't have a choice," Lustig said. "When you look at it that way, all of a sudden Big Food looks like the perpetrator, and the patient becomes the victim. Congress says you can't sue McDonald's for obesity because it's your fault. Except the thing is, when you don't have a choice, it's not your fault."
Dr. Lustig has some valid concerns about the effects of insulin spikes from foods with high glycemic loads. But if there is some kind of psychological starvation response in the brain, overcoming instinct is still possible. I even consider it virtuous. So I accuse Dr. Lustig of overstating his case. There is evidence that obesity rates respond to incentives. If obesity rates respond to incentives, then there is choice involved (at least, for some people; this evidence only shows that some people alter their weight based on incentives).
First: marriage leads to obesity:
•Women in their teens and early 20s who continued to date but didn't cohabitate gained an average of 15 pounds over five years; their male counterparts added about 24 pounds.
•Newly married women in that age group packed on 24 pounds in five years; newly married men gained 30 pounds.
That degree of gain wasn't seen in couples who were living together but not married. Women gained 3 pounds more than their single peers — 18 pounds — and men gained 24 pounds.
"When people are dating, there may be more incentive to be thin," [Penny] Gordon-Larsen [an assistant professor of nutrition in the school of public health at the University of North Carolina-Chapel Hill] says.
I agree with Gordon-Larsen; the incentive to attract new partners is probably the cause. As your partner's commitment to you increases, the incentive to be attractive decreases.
Second: obesity is contagious.
Having a friend, sibling or spouse who is overweight raises a person's risk of being obese too, US researchers say.
They said data on more than 12,000 people suggested the risk was increased by 57% if a friend was obese, by 40% if a sibling was and 37% if a spouse was.
The effects were generally larger between people of the same sex.
And their analysis suggested that the links could not be solely attributed to similarities in lifestyle and environment, for example the impact of friends existed even where friends lived in different regions.
Author Professor Nicholas Christakis said: "It's not that obese or non-obese people simply find other similar people to hang out with.
"Rather, there is a direct, causal relationship. What appears to be happening is that a person becoming obese most likely causes a change of norms about what counts as an appropriate body size.
"People come to think that it is OK to be bigger since those around them are bigger, and this sensibility spreads."
Maybe you face less social disapproval from your friends when they gain weight, so the cost of gaining weight is decreased. Alternatively - noting that the effects were larger between people of the same sex - it could be about competition. Maybe people try to compete with the norm for their gender, and their perceived norm is influenced by their social group.
Whatever the explanation, it appears that obesity is responding to incentives.
(Quick disclaimer: don't read into this post anything that isn't there. As far as I can tell, I have not said anything normative about obesity or social acceptance of obesity in this post.)