3 doctors weighed in:

What are trans fats and if they are so bad why do they have to put them I food?

3 doctors weighed in
Dr. Milton Alvis Jr
Preventive Medicine
1 doctor agrees

In brief: LowerProcessingCosts

The issue is: when double bonds, between carbons, are converted to single, the bond spatial pattern.
Lookup in google images: "cis-fat vs. Trans-fat". The vast majority of c-c bonds in fats, & other carbon backbone molecules, are single, aka saturated (no room for more hydrogen side groups). Living cells break double bonds to cis-bonds; industrial hydrogenation lacking control: ½ cis, ½ trans.

In brief: LowerProcessingCosts

The issue is: when double bonds, between carbons, are converted to single, the bond spatial pattern.
Lookup in google images: "cis-fat vs. Trans-fat". The vast majority of c-c bonds in fats, & other carbon backbone molecules, are single, aka saturated (no room for more hydrogen side groups). Living cells break double bonds to cis-bonds; industrial hydrogenation lacking control: ½ cis, ½ trans.
Dr. Milton Alvis Jr
Dr. Milton Alvis Jr
Thank
Dr. Randy Baker
Holistic Medicine

In brief: Toxic oils

Most trans fats come from partially hydrogenated oils found in many processed & fried foods.
They are used because they are cheap, taste good & extend shelf life. They cause inflammation, raise cholesterol & may cause up to 100, 000 deaths in the us from heart disease each year & also increase risk of alzheimer's disease, diabetes, obesity, depression & infertility. See my comment for some links.

In brief: Toxic oils

Most trans fats come from partially hydrogenated oils found in many processed & fried foods.
They are used because they are cheap, taste good & extend shelf life. They cause inflammation, raise cholesterol & may cause up to 100, 000 deaths in the us from heart disease each year & also increase risk of alzheimer's disease, diabetes, obesity, depression & infertility. See my comment for some links.
Dr. Randy Baker
Dr. Randy Baker
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2 comments
Dr. Randy Baker
For more information on how trans fats affect our health see http://articles.mercola.com/sites/articles/archive/2010/11/16/scientists-unlock-how-trans-fats-harm-your-arteries.aspx and http://articles.mercola.com/sites/articles/archive/2000/06/10/trans-fats.aspx
Dr. Randy Baker
another good link: http://www.treelight.com/health/nutrition/PartiallyHydrogenatedOils.html
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