A vegan diet that excludes animal products is perfectly healthy at all stages of life. Major dietary, medical and academic institutions all agree on this point.
For example, see these statements regarding veganism from…
- Harvard Medical School,
- This extensive review of the literature from The Lancet,
- The US Academy of Nutrition & Dietetics,
- The Italian Society of Human Nutrition,
- the American Dietetic Association and Dietitians of Canada,
- the British Dietetic Association,
- World Health Organization,
- the UK’s National Health Service,
- The College of Family Physicians of Canada,
- The American Journal of Clinical Nutrition,
- The Mayo Clinic,
- Kaiser Permanente,
- Stanford University,
- Yale University,
- The University of Oxford,
- The University of Cambridge,
- The American Diabetes Association,
- The American Institute for Cancer Research,