Toxic Heat-Processed Food Byproduct Increases Diabetes
Toxic Heat-Processed Food Byproduct Increases Diabetes – Researchers at Mount Sinai School of Medicine have identified a common compound in the modern diet that could play a major role in the development of abdominal obesity, insulin resistance, and type 2 diabetes. The findings are published in the Proceedings of the National Academy of Sciences.
The research team, led by Helen Vlassara, MD, Professor and Director of the Division of Experimental Diabetes and Aging, found that mice with sustained exposure to the compound, methyl-glyoxal (MG), developed significant abdominal weight gain, early insulin resistance, and type 2 diabetes.
MG is a type of advanced glycation endproduct (AGE), which is produced when food is cooked with dry heat. AGEs have been found to lower the body’s protective mechanisms that control inflammation.
In the study, one group of mice was fed a diet high in MG over four generations, while the control group was fed a diet without MG. Both diets had normal calories and fat. Over four generations, the mice that ate the MG started to develop early insulin resistance and increased body fat, whereas the control group did not have either of these conditions. The researchers found that MG caused a marked deficiency in protective mechanisms, such as the survival factor SIRT1 that is present in fat and controls inflammation, while enhancing the metabolism of glucose and insulin. The ingestion of MG also adversely affected the activity of an important anti-AGE receptor called AGER1, which protects SIRT1 and fights insulin resistance.
“This was a prolonged but rewarding study showing that a specific AGE compound abundant in foods, within only a few generations in mouse terms, contributes to the increase in weight gain, insulin resistance, and, diabetes, reproducing the pattern seen increasingly in humans over the last decades,” said Dr. Vlassara. “These key findings should inform how we understand and prevent the human epidemic of obesity and diabetes.”
The abdominal fat of the MG-fed mice was transformed into a repository of fat cells producing highly inflammatory molecules called cytokines, which impaired glucose metabolism and slowed down fat turnover, and resulted in insulin resistance and diabetes. Mice that were fed the low-in-MG diet displayed high levels of SIRT1, AGER1 and no diabetes.
“The study demonstrates how the prolonged ingestion of seemingly innocuous substances common in human food, such as MG, can reduce defenses and compromise native resistance to metabolic and other diseases,” said Dr. Vlassara. “The mouse findings are also quite exciting because they provide us with new tools, not only to study, but to begin taking measures to prevent diabetes, either by suppressing their formation or by blocking their absorption with our food.”
Recent clinical research by Dr. Vlassara’s team demonstrated that a modest cut in foods high in AGEs improved insulin resistance in adults with type 2 diabetes, without reducing fat or carbohydrate consumption. In other promising studies, the team has used an oral agent that binds AGEs in the intestine, blocking their absorption.
“For more than 30 years we have been studying the potential of eliminating harmful AGEs from the body, and now from food, as one way to curb the diabetes epidemic,” said Dr. Vlassara. “Thus far, our findings reflect the need for a dramatic departure from standard clinical recommendations, which should now include a reduction in the amount of dry heat and processed foods in the diet.”
The research team recommends that clinical guidelines be revised to eliminate foods cooked using dry heat and replace them with methods that use lower heat or lots of moisture (water) as in stewing, poaching or steaming. Examples from the AGE-less diet include stewed beef, chicken and fish instead of grilled meats.
The emphasis in the Roman Diet is on predominantly raw, unprocessed foods. This article would support that emphasis. We do cook some of our carb replacement foods. Our goal is always 75-80% raw whole fresh, organic, non-GMO, alkalizing, very low-glycemic, low insulin demand fruits and veggies, leaving the other 20-25% for prepared foods, including some that are cooked with dry heat. This article provides evidence that encourage us to use alternative means of cooking foods more often, instead of using dry heat.
Notice that there was a generational effect from AGES, with weight gain, insulin resistance and diabetes increasing in the descendants for several generations – Not good!
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