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However, the study found that the increased presence of epicatechin monomers helped beta cells to remain stronger as well as enhanced their ability to secrete insulin.
"What happens is epicatechin monomers is protecting the cells, increasing their ability to deal with oxidative stress," said lead author Jeffery Tessem, assistant professor at Brigham Young University (BYU), US.
"The epicatechin monomers are making the mitochondria in the beta cells stronger, which produces more ATP (a cell's energy source), which then results in more insulin being released," Tessem added.
The results showed that by adding it to the high-fat diet, the compound would decrease the level of obesity in the animals and would increase their ability to deal with increased blood glucose levels.
"These results will help us get closer to using these compounds more effectively in foods or supplements to maintain normal blood glucose control and potentially even delay or prevent the onset of Type-2 diabetes," said study co-author Andrew Neilson, assistant professor at Virginia Polytechnic Institute and State University.