In 1985, the Adventist Mortality Study analyzed the risk of diabetes in 25,000 vegetarians and meat eaters and found that women who ate red meat increased their risk of developing diabetes by 40%, and men who ate red meat increased their risk by 80%.
In 2008, the Adventist Health Study-2 evaluated 8,401 people and found that long-term (17-year) weekly meat eaters were 74% more likely to develop diabetes as those who ate totally plant-based.
In an analysis of meat consumption and diabetes, scientists found that for every 3.5 ounces of red meat consumed per day, diabetes risk increased 10%. And for every 1.75 ounces of processed red meat consumed per day (about the equivalent of one packaged hot dog), the risk increased 51%.
In the Nurses’ Health Study II, eating processed red meat more than five times a week increased the risk of diabetes by 91%; eating unprocessed red meat increased the risk by 59%.
The recent EPIC-Interact study found that every 10 grams of animal protein consumed daily increased the risk of diabetes by 6%. (Keep in mind that 100 grams is 3.5 ounces, so this is a very small amount.)
In a recent study of over 100,000 participants, diabetes risk doubled in daily fish eaters compared with those who never ate fish.