Why do some vegans go vegan for health? Many reasons. Here are just some:
http://www.youtube.com/watch?v=yfsT-qYeqGM
Celebrated Cornell University professor T. Colin Campbell Phd, presents the overwhelming evidence showing that animal protein is one of the most potent carcinogens people are exposed to.
TMAO: A Toxic Substance Formed When You Eat Meat Can Make You… Dead Meat
http://www.forksoverknives.com/tmao-a-toxic-substance-formed-when-you-eat-meat-can-make-you-dead-meat/
Meat, dairy may be as detrimental to your health as smoking cigarettes, study says
http://www.cbsnews.com/news/meat-dairy-may-be-as-detrimental-to-your-health-as-smoking-cigarettes/
Animal Protein and the Cancer Promoter IGF-1
http://nutritionfacts.org/2013/02/14/animal-protein-and-igf-1/
Vegan Blood Fights Cancer 8x Better
http://nutritionfacts.org/video/developing-an-ex-vivo-cancer-proliferation-bioassay/
Vegan diet in physiological health promotion. [Acta Physiol Hung. 1999] – PubMed – NCBI
http://www.ncbi.nlm.nih.gov/pubmed/10943644
Due to measured levels of dioxin that exceed safety standards, the National Academy of Science has for years recommended that people avoid eating a diet rich in animal fats.
http://www.diseaseproof.com/archives/hurtful-food-my-reaction-to-looking-at-an-oily-cheese-pizza.html
Change in quality of life and immune markers after a stay at a raw vegan institute: a pilot study
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2486444/
The role of diet and physical activity in breast, colorectal, and prostate cancer survivorship: a review of the literature
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3251953/
Interindividual differences in response to plant-based diets: implications for cancer risk
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2677005/
Effects of a long-term vegetarian diet on biomarkers of antioxidant status and cardiovascular disease risk. [Nutrition. 2004] – PubMed – NCBI
http://www.ncbi.nlm.nih.gov/pubmed/15474873
Vegetarian diets and the incidence of cancer in a low-risk population. [Cancer Epidemiol Biomarkers Prev. 2013] – PubMed – NCBI
http://www.ncbi.nlm.nih.gov/pubmed/23169929
Meat Consumption and Cancer Risk
http://www.cancerproject.org/survival/cancer_facts/meat.php
Red meat and colon cancer
http://www.ncbi.nlm.nih.gov/pubmed/21558046
Study finds unsafe mercury levels in 84 percent of all fish
http://www.cbsnews.com/8301-18563_162-57563739/study-finds-unsafe-mercury-levels-in-84-percent-of-all-fish/

Study Points to New Culprit in Heart Disease
http://www.nytimes.com/2013/04/08/health/study-points-to-new-culprit-in-heart-disease.html?pagewanted=all&_r=0
“Neu5Gc elicits an immune reaction that might contribute to a whole spectrum of human-specific diseases”
http://www.telegraph.co.uk/science/science-news/3346666/Mystery-of-the-meat-eaters-molecule.html
Restriction of meat, fish, and poultry in omnivores improves mood: a pilot randomized controlled trial
http://www.nutritionj.com/content/11/1/9/abstract
Harvard School of Public Health » milk is NOT the best source of calcium
http://www.hsph.harvard.edu/nutritionsource/calcium-and-milk/
Eating less meat and dairy may help reduce osteoporosis risk, Cornell studies show.
http://news.cornell.edu/stories/1996/11/eating-less-meat-may-help-reduce-osteoporosis-risk
Milk–the promoter of chronic Western diseases
PMID: 19232475
http://www.ncbi.nlm.nih.gov/pubmed/19232475
Dairy product, saturated fatty acid, and calcium intake and prostate cancer (PMID: 18398033)
http://www.ncbi.nlm.nih.gov/pubmed/18398033
Acne, dairy and cancer (PMID: 20046583)
http://www.ncbi.nlm.nih.gov/pubmed/18398033?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=2
Hormones in milk can be dangerous By Corydon Ireland
http://news.harvard.edu/gazette/2006/12.07/11-dairy.html
Milk consumption: aggravating factor of acne and promoter of chronic diseases of Western societies
http://www.ncbi.nlm.nih.gov/pubmed/19243483
Milk Consumption and Prostate Cancer
http://pcrm.org/health/health-topics/milk-consumption-and-prostate-cancer
Dairy Linked to Acne Development
http://www.pcrm.org/health/medNews/dairy-linked-to-acne-development
Understanding the Problems with Dairy Products
http://www.nutritionmd.org/nutrition_tips/nutrition_tips_understand_foods/dairy.html
1. Osteoporosis 2. Cardiovascular Disease 3. Cancer 4. Diabetes 5. Lactose Intolerance 6. Vitamin D Toxicity 7. Contaminants 8. Health Concerns of Infants and Children
Nutrient Density of Animal and Plant Foods:
http://www.drfuhrman.com/library/article17.aspx
Nutritional Update for Physicians: Plant-Based Diets (a summary)
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662288/
Facts and principles learned at the 39th Annual Williamsburg Conference on Heart Disease
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3603726/
“There are in Roberts’ opinion 4 facts supporting the contention that atherosclerosis is a cholesterol problem: 1) Atherosclerosis is easily produced experimentally in herbivores (monkeys, rabbits) by giving them diets containing large quantities of cholesterol (egg yolks) or saturated fat (animal fat). Indeed, atherosclerosis is one of the easiest diseases to produce experimentally, but the recipient must be an herbivore. It is not possible to produce atherosclerosis in carnivores (tigers, lions, dogs, etc.). In contrast, it is not possible to produce atherosclerosis simply by raising a rabbit’s blood pressure or blowing cigarette smoke in its face for an entire lifetime. 2) Atherosclerotic plaques contain cholesterol. 3) Societies with high average cholesterol levels have higher event rates (heart attacks, etc.) than societies with much lower average cholesterol levels. 4) When serum cholesterol levels (especially the low-density lipoprotein cholesterol [LDL-C] level) are lowered (most readily, of course, by statin drugs), atherosclerotic events fall accordingly and the lower the level, the fewer the events (“less is more”). Although most humans consider themselves carnivores or at least omnivores, basically we humans have characteristics of herbivores (Table (Table11).”
Health effects of vegan diets: ajcn.nutrition.org/content/89/5/1627S.full
Vegetarians have lower levels of triglycerides, total cholesterol, and LDL (bad) cholesterol than omnivores: http://www.ncbi.nlm.nih.gov/pubmed/17364116
Vegetarian diet may promote allergy protection: http://www.ncbi.nlm.nih.gov/pubmed/21048771
Positions of American, Canadian, Australian Dietetic Associations on vegetarian diets:  http://www.ncbi.nlm.nih.gov/pubmed/12778049, http://www.veganaustralia.org.au/government_recognises_vegan_diet_as_viable_option_for_all_australians, http://www.dietitians.ca/Your-Health/Nutrition-A-Z/Vegetarian-Diets/Eating-Guidelines-for-Vegans.aspx
Increased consumption of fruits and vegetables promotes cardiovascular health and longevity:
http://ajcn.nutrition.org/content/early/2011/05/18/ajcn.110.009340.abstract
Vegetarians have significantly lower heart disease mortality and cancer incidence: http://www.karger.com/Article/Pdf/337301
A high-carb low-fat (vegan) diet can reduce total and LDL cholesterol and lead to modest weight reduction: http://www.ncbi.nlm.nih.gov/pubmed/9805219
Increased saturated fat can increase total cholesterol, in favor of LDL (bad) more than HDL (good) cholesterol: http://www.health.harvard.edu/staying-healthy/the-truth-about-fats-bad-and-good
Vegetarians live longer than omnivores, even when controlling for other health factors: http://www.mensjournal.com/health-fitness/health/go-vegetarian-live-longer-20140717
Increased consumption of animal products may lead to increased risk of Alzheimer’s disease: http://www.ncbi.nlm.nih.gov/pubmed/24037034
High intake of fruits and vegetables associated with reduced risk of breast cancer:
http://www.ncbi.nlm.nih.gov/pubmed/22706630
Frequent consumption of nuts may protect against risk of cardiovascular disease:
http://www.ncbi.nlm.nih.gov/pubmed/1627021
Increasing legume intake can protect against coronary heart disease:
http://www.ncbi.nlm.nih.gov/pubmed/11718588
Increasing dietary folate can protect against stroke and heart disease:
http://www.ncbi.nlm.nih.gov/pubmed/11988588
Increasing dietary fibre can protect against heart and cardiovascular disease: http://www.ncbi.nlm.nih.gov/pubmed/12963562, http://www.ncbi.nlm.nih.gov/pubmed/11755286
Low intake of dietary cholesterol can prevent heart disease: http://www.ncbi.nlm.nih.gov/pubmed/3052353, http://www.ncbi.nlm.nih.gov/pubmed/16596800

Higher intake of fruit and vegetables lowers risk of cardiovascular disease:
http://www.ncbi.nlm.nih.gov/pubmed/11010932
Diets that are rich in plant-based foods promote longevity: http://www.ncbi.nlm.nih.gov/pubmed/12514290
Higher consumption of fruits and vegetables can protect against cerebrovascular diseases:
http://www.ncbi.nlm.nih.gov/pubmed/19646291
Higher consumption of fruits and vegetables leads to modest reduction in development of major chronic diseases: http://www.ncbi.nlm.nih.gov/pubmed/15523086
Higher consumption of fruits and vegetables protects against heart disease:
http://www.ncbi.nlm.nih.gov/pubmed/11412050
Vegetarians have lower risk of ischemic heart disease: ajcn.nutrition.org/content/97/3/597.full.pdf
Vegans and vegetarians have lower blood pressure and prevalence of hypertension:
http://www.ncbi.nlm.nih.gov/pubmed/12372158
Beneficial association between vegetarian diet and cardiovascular risk factors:
http://www.ncbi.nlm.nih.gov/pubmed/25343719
African-American vegans have better cardiovascular disease risk factors than lacto-ovovegetarians:
http://www.ncbi.nlm.nih.gov/pubmed/9791838
Physicians should recommend plant-based diets to their patients: http://www.ncbi.nlm.nih.gov/pubmed/23704846
Vegans and vegetarians have lower BMI than meat eaters: http://www.ncbi.nlm.nih.gov/pubmed/12833118
Vegans have lower levels of IGF-1 growth hormone and higher levels of IGF-binding proteins:
cebp.aacrjournals.org/content/11/11/1441.full.pdf
Higher levels of IGF-1 increase risk of (prostate) cancer:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2743036/pdf/ukmss-27731.pdf, http://www.ncbi.nlm.nih.gov/pubmed/12917205, http://www.ncbi.nlm.nih.gov/pubmed/10203281, http://www.ncbi.nlm.nih.gov/pubmed/11018095
Plant-based diets can reduce risk of heart disease and stroke: http://www.ncbi.nlm.nih.gov/pubmed/12936948, http://www.ncbi.nlm.nih.gov/pubmed/25431999
Whole foods, plant-based diet relieves symptoms of osteoarthritis: http://www.ncbi.nlm.nih.gov/pubmed/25815212
Plant-based diets may reduce risk of metabolic syndrome: http://www.ncbi.nlm.nih.gov/pubmed/25084991
Vegetarian and vegan diets reduce risk of cancer: http://www.ncbi.nlm.nih.gov/pubmed/21407994
Health benefits of vegetarian diet far outweigh the potential risks: http://www.ncbi.nlm.nih.gov/pubmed/15806870, http://www.ncbi.nlm.nih.gov/pubmed/24964573
Plant-based diets decrease risk of colorectal cancer: http://www.ncbi.nlm.nih.gov/pubmed/25592002
Plant-based diets are not nutritionally deficient: http://www.ncbi.nlm.nih.gov/pubmed/24361028
Vegetarian diets have significant benefits for weight reduction: http://www.ncbi.nlm.nih.gov/pubmed/26138004
Vegetarian diets reduce risk of colorectal cancer: http://www.ncbi.nlm.nih.gov/pubmed/25751512
Vegetarian diet is associated with lower blood pressure: http://www.ncbi.nlm.nih.gov/pubmed/24566947
Vegetarian diets have more beneficial effects on health than standard American/European diet:
http://www.ncbi.nlm.nih.gov/pubmed/7635375
Cancer
Vegans/vegetarians have lower risk of cancer: http://www.ncbi.nlm.nih.gov/pubmed/23169929
Vegan proteins may reduce risk of cancer, obesity, cardiovascular disease:
http://www.ncbi.nlm.nih.gov/pubmed/10687887
Vegan diet leads to lower risk of cancer and cardiovascular disease:
http://www.ncbi.nlm.nih.gov/pubmed/10943644
Heart Disease
Vegetarians have better antioxidant and heart disease profiles than healthy omnivores: http://www.ncbi.nlm.nih.gov/pubmed/15474873
Plant-based diets can reverse cardiovascular disease: http://www.ncbi.nlm.nih.gov/pubmed/25198208
Diabetes
Diabetes, hypertension, obesity more prevalent among meat-eaters than vegetarians: http://www.ncbi.nlm.nih.gov/pubmed/23283037
Vegetarian and vegan diets have advantages in treating type 2 diabetes:
http://www.ncbi.nlm.nih.gov/pubmed/20425575
Strong protective association between Taiwanese vegetarian diet and diabetes:
http://www.ncbi.nlm.nih.gov/pubmed/24523914
Strong protective association between vegetarian diet and diabetes (after controlling for confounders): http://www.ncbi.nlm.nih.gov/pubmed/24523914
Lower intakes of saturated fat may reduce cognitive decline in individuals with type 2 diabetes:
http://www.ncbi.nlm.nih.gov/pubmed/19336640
Diets higher in protein and animal protein increase diabetes risk: http://www.pcrm.org/health/medNews/animal-protein-linked-to-increased-diabetes-risk
Vegetarian and vegan diets present advantages for type 2 diabetes treatment:
http://www.ncbi.nlm.nih.gov/pubmed/19386029
For more studies and information on plant based diets, check out this site:

http://plantbasedresearch.org/