Monday, May 5, 2008

STRONG GENETIC FACTOR FOUND IN WEIGHT GAIN

More evidence that the prejudice shown against large people is just that: prejudice

NEW SCIENTIST A team of Swedish researchers has found that humans determine their total number of fat cells in childhood. New cells spring up and old ones perish, but their numbers change little after adolescence. By measuring radiation absorbed after nuclear bomb tests in the 1950s and 60s, researchers found that our fat cells quickly regenerate.

But obese people turn over far more fat cells than others, says Kirsty Spalding, a biologist at the Karolinska Institute in Stockholm. The difference could explain why people battle to keep weight off after a diet.

"The take-home message is be careful what you feed your child," Spalding says. "Do everything you can to make sure you don't blow out your fat cell number when you are young." . . .

We recycle about 10% of our fat cells each year, and every 8 years, half our adipocytes have been replaced.

But Spaulding did find that young obese people add twice as many fat cells each year as others, on average. "This could be part of the reason it's so hard to keep weight off," Spaulding says.

After plugging those numbers into a mathematical model, her team found that obese people start building up their fat cells much faster and at a younger age - about two years old - than thin people.

3 Comments:

At May 5, 2008 1:40 PM, Anonymous Anonymous said...

"The take-home message is be careful what you feed your child," Spalding says. "Do everything you can to make sure you don't blow out your fat cell number when you are young." . . .

While insuring that children do not fill up on junk food and become obese from hollow calories is very important. Feeding children, espcially young children low fat diets is extremely dangeous. Children need fats from healthy sources to grow and develop properly, and denying children those valuble fats will cause them serious health consequenses.

http://www.westonaprice.org/

 
At May 5, 2008 5:48 PM, Anonymous Anonymous said...

Sam:

1) Of course we should not discriminate based on a person's size. We should be kind and understanding toward all people.

2) This article presents no evidence for a genetic cause of weight gain.

3) The rapid rise in obesity over the past 20 years demands a non-genetic explanation. See CDC: http://www.cdc.gov/nccdphp/dnpa/obesity/trend/maps/index.htm

4) Obesity is especially prevalent in particular racial, ethnic, and class groups. Are you prepared to say that these disparities are caused by genes?

5) Wendell Berry has noted that the largest untapped energy reserve in the USA may be in our bodies.

 
At May 8, 2008 8:38 AM, Anonymous Anonymous said...

Maybe it's about time that we stopped being so terrified about admitting the possibility of genetic variables among people of different ethnic and racial groups. The differences don't necessarily have to be pejorative, but we'll never dicover that either if we continue to let ourselves be so cowed by overblown notions of political correctness that we refuse to examine the data on that head objectively.

 

Post a Comment

<< Home