The short answer
Dr. Martin says no, and he answers it with one country. Hong Kong eats more red meat per person than anywhere in the world and has one of the lowest rates of diabetes in the world, which is the opposite of what the red-meat-causes-diabetes story predicts.
Dr. Martin on Hong Kong:
Dr. Martin, The Doctor Is In, Episode 1398The highest in the world is in Hong Kong. I've been there. They love their red meat. People think, oh, in Hong Kong, all they eat is rice. They're the highest consumption per capita of red meat. They have one of the lowest rates in the world of diabetes.
What he points at instead
He points at sugar. It is the same answer he gives on iron, on the liver and on the blood vessels, and it is why he treats the food that goes up alongside a disease as the suspect rather than the food that goes down.
Dr. Martin, The Doctor Is In, Episode 657It's funny. They don't give you a puree of steak when you get the PET scan. Well, if red meat causes cancer, why don't they puree steak and say, well, drink this? Nope, they give you glucose. Because they know how the machine works. It doesn't work without it. You can't get a PET scan without drinking sugar.
This page is one part of Dr. Martin's guide to red meat, which collects every answer he has given on it.