Warning: Men Should Eat Less Red Meat

Here's another reason to be skeptical of red meat: According to recent research from Harvard University scientists, increased consumption of red meat can cause men gastrointestinal issues like diverticulitis (inflammation of the digestive tract).

"Our findings were generally in line with our prior early analysis that red meat, but not poultry or fish, is associated with an increased risk of diverticular disease," Dr. Yin Cao of Massachusetts General Hospital and Harvard Medical School said in a statement.

Cao and his team analyzed the dietary habits and digestive effects of red meat on 46,461 men between the ages of 40 and 75. The study analyzed results every two years between 1986 and 2012. Throughout a 26-year period, 764 cases of incident diverticulitis were found during the 651,970 individual follow-ups.

Men who consumed the most red meat were at the highest risk for diverticulitis. Scientists also found that consuming more poultry or fish during the day reduced the risk substantially.