Controversial and unproven theories, I would suggest just use common sense and avoid extreme diets.

My father died of colon cancer at age 51 in 1978. Dad loved red meat and processed and preserved meats with cancer-causing nitrates and nitrites.

I was 24. Immediately I stopped eating processed and preserved meats (hot dogs, sausage, ham, salami, beef jerky, bologna, corned beef, pepperoni, etc.), hamburgers, fast food, deep fried food and red meat. Don't miss it.

In a sweeping review released on October 26, 2015, the World Health Organization (WHO) officially identified processed meat (including canned meats, chicken nuggets and deli meats) as a Group 1 carcinogen, meaning the quality of the evidence firmly links it to cancer. Red meats fare little better, falling into Group 2A, a category that includes the toxic pesticide DDT, the chemical weapon mustard gas and the insecticide malathion.

The International Agency for Research on Cancer (IARC) did a so-called meta-analysis- a study of studies- evaluating 800 published papers. Twenty-two experts from 10 countries conducted the work and then voted on what findings to issue.

Those findings state that 50 grams of processed meat per day - one hot dog or about six pieces of bacon- raises the risk of colorectal cancer by 18%. Other cancers too were associated with red and processed meats, including stomach, prostate and pancreatic, but it was colorectal that produced the most persuasive numbers.

From: "The War on Delicious" by Jeffrey Kluger, Time Magazine, November 9, 2015

So much of what people say about diet.. meat, no meat, veganism, gluten free, is such nonsense.

Popcorn, beer and French fries are vegan and none of those things are good for you. If you eat burgers and beef jerky all day, that's not good either. There are just as many meat eaters who live long, healthy lives and survive to be the "oldest people in the world."

We are all different and require different foods to feel healthy and strong. I know vegetarians and vegans who complain constantly about being tired. They are out of shape and always get sick. There are others who look and feel fine.

There are many variables that impact health and it has less to do with eating red meat, than what kind of red meat you're eating, and other things you're eating as well.

I know plenty of meat eaters who are super fit, healthy and full of energy and we are all of different ages, from 30 to 90.

If you're judging meat consumption as being so unhealthy and you consume alcohol, do some research. Alcohol is associated with hundreds of cancers. No, it's not good for you. If it were, we'd be giving it to our infants and would be highly recommended during pregnancy. It's not broccoli!

People who live long, healthy lives, eat nutrient rich foods, exercise, drink very little, get enough sleep, don't smoke and don't do stupid shit like drink and drive.

Cut back on The Salt.

It is certain you are going to die ... so live well, enjoy life and die happy .... if your choices include red meat, soda drinks and lots of drink and drugs ... or lentil stew, courgette hotpot and fresh water .... who cares

The majority of scientists and other highly educated individuals I have associated with or read things by don't touch feedlot meat.

Money can buy scientists, politicians, news people, and others, but not everyone.