Showing posts with label fat. Show all posts
Showing posts with label fat. Show all posts

Friday, May 6, 2011

White fat to brown fat

Scientists say they have found a way to turn body fat into a better type of fat that burns off calories and weight.

Modifying a protein linked to appetite not only reduced the animals' calorie intake and weight, but also transformed their fat composition. "Bad" white fat became "good" brown fat, Cell Metabolism journal reports. Brown fat is abundant in babies, which use it to generate body heat, expending calories at the same time.

The brown fat has this protein called thermogenin, which decreases the proton gradient generated in oxidative phosphorylation by increasing the permeability of the inner mitochondrial membrane, allowing protons that have been pumped into the intermembrane space to return to the mitochondrial matrix producing heat, not ATP.

But as we age our brown fat largely disappears and gets replaced by white fat, which typically sits as a spare tyre around the waist. Experts have reasoned that stimulating the body to make more brown fat rather than white fat could be a helpful way to control weight and prevent obesity and its related health problems like type 2 diabetes.

You can view this piece of news here.



Saturday, April 2, 2011

Fat wars

There has been a lot of talking about the effects of different lipids lately in Finland at least. Some say the most important thing is the right balance (1:1) between Omega-6 and Omega-3 fatty acids and others state that we have only been dramatizing the effects of saturated fatty acids. Who should we believe when even the experts of nutrition can't find consensus on these cases? There is only one thing they totally agree on: trans fatty acids are dangerous for your health.

I have been trying to find neutral information about the effects, which ain't easy in the first place, and I think it's important to eat a little bit of everything. Humans are omnivores after all. Versatility is the key word and "everything in moderation" is actually very good advice for life in general because it applies in many different situations.