https://skepticalinquirer.org/exclusive/myth-check-was-hitler-a-vegetarian/ Yeah you’re right later in life he identifies as one however still ate meat his chef fed him so the claim is dubious at best and may have been propergander for the war effort.

He wasn’t, it’s well documented he wasn’t vegetarian this was spread as anti vegetarian propegand.

https://pubmed.ncbi.nlm.nih.gov/30909722/ This meta analysis shows that dairy doesn’t help rates of osteoporosis and hip fraractures.

Interesting. Oddly enough the lowest rates of osteoporosis occur in countries with the lowest rates of dairy consumption and there appears to be evidence that it could be causal.

OK I’ll bite, surely there is no legit reason for this…

I came for the vegan comment however as it was already there, the biggest change I could see from mass adoption of the vegan ideals are that the population would have an across the world increase in empathy to not only animals but because they aren’t murdered as part of societal norms the empathy towards and the treatment of humans is likely to increase as well. This could theoretically lead to an increase in environmental action helping climate change but also help addressed a number of socialogical issues at the same time. We are a long way from this however in the uk veganism has increased 1567% in 10 years so with this rate of change it is possible.