Michelle H
Sat, Dec-31-05, 02:35
Hi Everyone,
this is from PUFA newsletter
http://www.fatsoflife.com/article.asp?i=c&id=281
Summarising the best I can:
Arachidonic acid (AA) seems to be the fat responsible for triggering adipogenesis (laying down fat).
Linoleic acid (LA) is a precursor of AA and an n-6 long chain poly-unsaturated fatty acid (and commonlyfound in vegetable oils - my comment).
Pregnant mice fed a diet high in LA gave birth to heavier pups and they stayed heavy. Mice fed a mixture of LA and alpha-linloeic acid (ALA) (n-3 fatty acid) gave birth to pups of a normal weight.
That is, too much of the wrong type of unsat. fatty acids seems to influence the laying down of fat.
The researchers then go on to apply this theory to humans, pointing out that the amount of LA in western diets has increased hugely, while the amount of n-3 fatty acids increased has declined. A link between these dietary changes and increasing obesity is suggested.
So, all the more reason to avoid poly-insaturated vegetable oils and eat more butter (and fish oil).
Happy New Year,
Michelle
this is from PUFA newsletter
http://www.fatsoflife.com/article.asp?i=c&id=281
Summarising the best I can:
Arachidonic acid (AA) seems to be the fat responsible for triggering adipogenesis (laying down fat).
Linoleic acid (LA) is a precursor of AA and an n-6 long chain poly-unsaturated fatty acid (and commonlyfound in vegetable oils - my comment).
Pregnant mice fed a diet high in LA gave birth to heavier pups and they stayed heavy. Mice fed a mixture of LA and alpha-linloeic acid (ALA) (n-3 fatty acid) gave birth to pups of a normal weight.
That is, too much of the wrong type of unsat. fatty acids seems to influence the laying down of fat.
The researchers then go on to apply this theory to humans, pointing out that the amount of LA in western diets has increased hugely, while the amount of n-3 fatty acids increased has declined. A link between these dietary changes and increasing obesity is suggested.
So, all the more reason to avoid poly-insaturated vegetable oils and eat more butter (and fish oil).
Happy New Year,
Michelle