"This study demonstrates that there are negative 'brain / cognitive' outcomes, in addition to the known cardiovascular outcomes, that are related to a diet that has (a) high content of trans fats," said neurologist dr. Neelum T. Aggarwal, who was not involved in the study. Aggarwal, a member of the American Academy of Neurology, is co-leader of the Rush Alzheimers Disease Center in Chicago.
Over 1,600 Japanese men and women without dementia were followed over a 10-year period. A blood test for trans fat levels was done at the start of the study and their diets were analyzed.
Researchers then adjusted for other factors that could affect the risk of dementia, such as high blood pressure, diabetes and smoking.
"The levels used for trans fats, rather than more traditionally used dietary questionnaires, which increases the scientific validity of the results, "said neurologist dr. Richard Isaacson, director of the Alzheimer's Prevention Clinic at Weill Cornell Medicine in New York.
"Alzheimer's dementia," said Isaacson, who was
What are trans fats
Trans fats can naturally occur in small amounts in certain meats and dairy foods, but by far the greatest exposure comes from the man-made version.
Also called trans fatty acids, artificial trans fats are produced by an industrialized process that adds hydrogen to liquid vegetable oils to make them more solid (think of semi-soft margarine and shortening).
The food industry loves trans fats because they are cheap to produce, and a great taste and texture.
In addition to fried foods, cakes, cakes, pie crusts, frozen pizza , cookies, crackers, biscuits and dozens of other processed foods.
In the Japanese study, researchers found sweet pastries were the strongest contributors to higher trans fats levels. Margarine was next, followed by candies, caramels, croissants, non-dairy creamers, ice cream and rice crackers.
US regulatory action
After extensive research revealed the connection between trans fats and the increase The 10 warning signs.
Companies were given three years to stop using them; then the FDA began granting extensions to various parts of the industry. The latest extension runs out January 1.
But even if every manufacturer complies by the first of the year, that does not mean trans fats are gone from the grocery shelves. According to the FDA, the same as "0 grams" of trans fats.
Even in small doses, artificial trans fats wants to be silent about contributing to cardiovascular