Dangerous Diet Foods??

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Today's Question

Dangerous Diet Foods?

 

I’m trying to lose weight and have been eating some of the healthy

frozen meals from the grocery store. Are these good for you?

 

-- Dennis

 

Today's Answer

(Published 02/05/2004)

Many people try to lose weight by eating diet foods that claim to be

prepared in a healthy fashion. Whether they are “nutritionally balanced”

frozen dinners, supplement shakes or meal replacement bars, they may not

be truly healthy alternatives to whole food.

 

Many of these prepared foods contain poor ingredients - especially

unhealthy fats. Manufacturers love partially hydrogenated oils because

they extend shelf life, but in my opinion they are dangerous. For one

thing, these oils are sources of trans fatty acids (TFAs), which

increase risks of both cardiovascular disease and cancer. TFAs are just

as bad, if not worse, for the heart and arteries than saturated fats.

They increase total cholesterol, raise “bad” LDL (low density

lipoprotein) and lower “good” HDL (high density lipoprotein). Beyond

that, TFAs may also have adverse effects on cell membranes and the

immune system, and may promote inflammation and aging.

 

As a matter of fact, the U.S. Food and Drug Administration recently

ruled that starting in 2006, food companies must list a product's amount

of trans fats on its label. While other fats now are listed in the

" Nutrition Facts " box, TFAs can only be found in the long list of

side-panel ingredients, where they usually are listed as " partially

hydrogenated vegetable oils. " The amount of trans fat typically is not

given, however a general rule is that the higher these oils are on the

ingredient list, the more trans fat there is.

 

Until 2006, I suggest that you avoid TFAs altogether by checking the

labels of any processed foods you buy – even those claiming to be

healthy – and stay away from those containing margarine, vegetable

shortening and fractionated or partially hydrogenated oils of any kind.

I have no objection to frozen and other convenience foods made from

healthy ingredients. Read labels!

 

Andrew Weil, M.D.

www.drweil.com

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