A vegan diet is good both for the environment and for individual health.

Vegan Diet and the Environment

Climate change mitigation and health effects of varied dietary patterns in real-life settings throughout North America: https://academic.oup.com/ajcn/article/100/suppl_1/490S/4576703 (pdf available)

Vegan Diet and Health

Some articles:

The Oxford Vegetarian Study: an overview: https://pubmed.ncbi.nlm.nih.gov/10479226/

Vegans found to have highest amount of disease-fighting biomarkers: https://news.llu.edu/research/vegans-found-have-highest-amount-of-disease-fighting-biomarkers

Does the Vegan Diet Extend Your Lifespan? https://www.healthline.com/nutrition/do-vegans-live-longer

Cardiovascular Disease Mortality and Cancer Incidence in Vegetarians:
A Meta-Analysis and Systematic Review: https://www.karger.com/Article/Pdf/337301

Vegetarian Dietary Patterns and Mortality in Adventist Health Study 2: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4191896/

Mortality in vegetarians and comparable nonvegetarians in the United Kingdom: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691673/pdf/ajcn119461.pdf

Vegetarian diet and all-cause mortality: Evidence from a large population-based Australian cohort – the 45 and Up Study: https://www.sciencedirect.com/science/article/abs/pii/S0091743516304479

Loma Linda’s longevity legacy: https://news.llu.edu/health-wellness/loma-linda-s-longevity-legacy

Vegetarianism and Health: Research on Vegetarian Nutrition: https://libguides.llu.edu/c.php?g=429401&p=2929209

Geographic study of mortality, biochemistry, diet and lifestyle in rural China: https://web.archive.org/web/20120306122055/http://www.ctsu.ox.ac.uk/~china/monograph/

Huge Study Of Diet Indicts Fat And Meat: https://www.nytimes.com/1990/05/08/science/huge-study-of-diet-indicts-fat-and-meat.html