Research that appeared in the journal Circulation: Heart Failure reveals that, in middle-aged men (42 to 60 years old), a higher consumption of protein as in a protein diet slightly increases the cardiovascular risk. Conducted for over twenty years, the study analyzed the correlation between a protein diet and the risk of mortality from heart attack or stroke in a sample of over 2400 men.

The study actually says very little: there is talk of a marginal increase in risk, which is essentially linked to all types of high-protein foods, including vegetable ones, but which sees in the head protein foods of animal origin apart from fish and eggs, but looking at vegetable protein foods we see “wheat products” (seitan? it is not known) and potatoes (?). The right amount of protein according to the researchers for those with heart problems should still be greater than 0.7 grams of protein per pound of body weight.

An increased risk would come from fermented dairy products, more than traditional cheeses or dairy products, but the researchers admit that other studies have shown a protective effect of dairy products in general and that neither their use was considered. of supplements or the use of products enriched with synthetic vitamins and mineral salts. Another problem that makes it difficult to understand whether the protein diet has anything to do  with the risk of cardiovascular disease is that some people who are overweight and prone to developing diabetes mellitus ate more protein but also much more polyunsaturated fat.
Finally, it seems that the sample recorded what he ate only 4 days a week. Four days are practically half a week.

In conclusion, the study says very little about the correlation between proteins and cardiovascular disease risk, and this correlation for a variety of reasons (data collected only in a few days, impossibility of establishing whether the meat was from industrial preparations or fresh, inclusion of products from cereals and potatoes as protein sources and so on) does not appear to be significant.