The Fat Grackle

A Twin Study of Human Obesity from The Journal of the American Medical Association


"Height, weight, and body mass index (BMI) were assessed in a sample of 1974 monozygotic and 2097 dizygotic male twin pairs. Concordance rates for different degrees of overweight were twice as high for monozygotic twins as for dizygotic twins. Classic twin methods estimated a high heritability for height, weight, and BMI, both at age 20 years (.80,.78, and.77, respectively) and at a 25-year follow-up (.80,.81, and.84, respectively). Height, weight, and BMI were highly correlated across time, and a path analysis suggested that the major part of that covariation was genetic. These results are similar to those of other twin studies of these measures and suggest that human fatness is under substantial genetic control.

(JAMA 1986;256:51-54)

Albert J. Stunkard, MD; Terryl T. Foch, PhD; Zdenek Hrubec, ScD
JAMA. 1986;256(1):51-54. doi:10.1001/jama.1986.03380010055024.
Weight and HFCS - a new study


Just came across this Study: HFCS Leads To Much More Weight Gain In Rats Than Sugar @ The Consumerist:

A study from Princeton published in the February issue of the journal Pharmacology, Biochemistry and Behavior (PDF) shows that high fructose corn syrup (HFCS), used as a cheap sweetener in everything from Coke to Progresso soup, is not the same as table sugar, namely for the way that it makes you gain 48% more weight.[…]

“Some people have claimed that high-fructose corn syrup is no different than other sweeteners when it comes to weight gain and obesity, but our results make it clear that this just isn’t true, at least under the conditions of our tests,” said psychology professor Bart Hoebel. “When rats are drinking high-fructose corn syrup at levels well below those in soda pop, they’re becoming obese — every single one, across the board. Even when rats are fed a high-fat diet, you don’t see this; they don’t all gain extra weight.”

Since HFCS was introduced into the American food supply as a cost-effective sweetener, the population’s obesity rate has shot up from 15% in 1970 to nearly 33% today.

I know many people have been suggesting this for years, but without the scientific proof, the health care establishment more or less refused to accept the premise. It seems that it is now confirmed. I only wonder for how long the subsidies will continue.