The reality is that there is a difference between vegan/vegetarian and whole food plant based diets. I am sure if you eat beyond burgers (processed meatless patties) everyday, you aren't doing your health any favors.

I mean potato chips are vegan. French fries are vegan, etc.

The key is whole foods. Unprocessed foods.

Fun fact: Oreos are vegan, still magically not good for you.

I expect the correlation of cancer and vegetarian diets is the "sick quitters" bias [0]. People try to improve their diet once they experience a health problem.

[0] https://www.cancercouncil.com.au/blog/the-sick-quitter-effec...

Most of the vegetarians/vegans I know have a pretty shitty diet - lots of highly processed grains (bread, pasta, and other fillers), sweets, desserts, sugary drinks (and other "regular" products with added sugars), and otherwise not too diverse of a diet.

Don't know if that's a representative sample of vegetarian/vegan population, but it's not unlikely the case. Hence, the link between the veg* diet and cancer is not hard to imagine.

The main issue with (a lot of) these research papers, other than having bad data to begin with, is the lack of control for other parameters: what exactly do those surveyed meat-eaters and vegetarians eat, and what their lifestyle choices are (e.g., vegetarians are generally more health-conscious, so they often exercise, don't smoke/drink as much, etc.).

> Most of the vegetarians/vegans I know have a pretty shitty diet

In my observations (I'm in the US) this statement is true of the majority of the population, including omnivores. 2/3 of the US didn't become overweight (1/3 obese) by being mindful of their diets.

> Don't know if that's a representative sample of vegetarian/vegan population, but it's not unlikely the case.

There are a lot of vegetarians in India on traditional diets that don't include highly processed foods with added sugar. I think it's safe to say that most Indians eat vegetarian food most of the time. Meat is just something most people in India can't afford everyday.

I think it's worth understanding why someone is a 'veggie'.

For me it was for standard 'moral' reasons and so eating junk food is still acceptable.

Eventually I picked up the health reasons angle (and discarded all the junk food) and moving to mostly a plant based diet (mostly vegan).

It’s really not surprising. You’re almost sure to be eating pesticides or weird chemicals even if you go fully organic. You can’t get it off by rinsing or washing. Plus, as has just become clear recently, carbohydrates are highly inflammatory, and inflammation plays a key role in cancer, heart disease, psychiatric disease and almost every other modern malady. It turns out that when you go from eating few carbs to zero carbs, tons of health problems, all centered around inflammation, go away. Carnivore is a miracle for allergies and skin problems. It’s really one of the biggest medical/diet revolutions that’s currently in the pipes. Certainly so when it comes to bang for buck.

Try reading a book about carnivore diet. It's the complete opposite of the bone-breaking with no muscle-mass vegan diet, maybe it has some type of truth in it ;).