Heme iron is toxic. [0]

B12 you can get from a pill. The same stuff they inject into beef. [1]

So if you skip eating red meat, you can avoid the toxins from cooking, such as HCA and PAH [2], the exogenous cholesterol, atherosclerotic carnitine [3], hormones, etc. I think that's a better way to get B12.

[0] https://www.sciencedirect.com/science/article/abs/pii/S03784...

[1] http://eerainuh.com/supplementation-of-vitamin-b12-in-cattle...

[2] https://www.cancer.gov/about-cancer/causes-prevention/risk/d...

[3] https://www.prevention.com/food-nutrition/healthy-eating/a20...

Heme is also what makes a burger taste like a burger. https://impossiblefoods.com/heme/

If you feed cows corn all day every day, yes they need B12 injections. I buy beef from a local butcher and the beef comes from our local farm of pasture-raised cows. It's more expensive but because of this it limits my beef intake to a few times a month.

> Heme iron is toxic. [0]

Everything is toxic in inappropriate doses.

liver == steak * 1000 Only problem is being able to stomach liver a few days every month. I know it's a super food but I'll be damned if I can eat it more than once every few months.