Notably, in a 6-year study in monkeys, a high-trans-fat diet (8 of calories) caused insulin resistance and elevated belly fat and fructosamine, a marker of high blood sugar ( 30 ).
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This article explains everything you need to know about trans fats. What are trans fats Trans fats, or trans-fatty acids, are a form of unsaturated fat. They come in both natural and artificial forms. Natural, or ruminant, trans fats occur in the meat and dairy from ruminant animals, such as cattle, sheep, and goats. They form naturally when bacteria in these animals stomachs digest grass. These types typically comprise 26 of the fat in dairy products and 39 of the fat in cuts of beef and lamb ( 1, 2 ). Several reviews have concluded that a moderate intake of these fats does not appear harmful ( 3, 4, 5 ). The best-known ruminant trans fat is conjugated linoleic acid (CLA), which is found in dairy fat. It is believed to be beneficial and is marketed as a dietary supplement ( 6, 7, 8, 9 ). Reading Answers Of Trans Fatty Acids Trial Trans FatsHowever, artificial trans fats otherwise known as industrial trans fats or partially hydrogenated fats are hazardous to your health. These fats occur when vegetable oils are chemically altered to stay solid at room temperature, which gives them a much longer shelf life ( 11 ). SUMMARY Trans fats are found in two forms natural, which occur in some animal products and arent considered harmful, and artificial, which are hydrogenated vegetable oils and have serious health consequences. Do they harm your heart Artificial trans fats may increase your risk of heart disease. Reading Answers Of Trans Fatty Acids Series Of ClinicalIn a series of clinical studies, people consuming trans fats instead of other fats or carbs experienced a significant increase in LDL (bad) cholesterol without a corresponding rise in HDL (good) cholesterol. Meanwhile, most other fats tend to increase both LDL and HDL ( 12 ). Similarly, replacing other dietary fats with trans fats significantly increases your ratio of total to HDL (good) cholesterol and negatively affects lipoproteins, both of which are important risk factors for heart disease ( 13 ). Indeed, many observational studies link trans fats to an increased risk of heart disease ( 14, 15, 16, 17 ). SUMMARY Both observational studies and clinical trials suggest that trans fats significantly increase your risk of heart disease. Do they affect insulin sensitivity and diabetes The relationship between trans fats and diabetes risk is not completely clear. A large study in over 80,000 women noted that those who consumed the most trans fats had a 40 higher risk of diabetes ( 18 ). That said, animal research reveals that large amounts of trans fats harm insulin and glucose function ( 26, 27, 28, 29 ).
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