Dr Matthew Nagra Debunks Link Between Bryan Johnson’s AIG Diagnosis And Veganism
Plant Based News • Jul 16, 2026
Dr Matthew Nagra has refuted claims that Bryan Johnson's recent autoimmune gastritis (AIG) diagnosis was caused by a vegan diet. Nagra, a plant-based physician, emphasized that there is no evidence to suggest that vegan or vegetarian diets lead to autoimmune diseases like AIG. He criticized Vince Pitstick, founder of Vidal Coaching, for promoting false information about veganism and autoimmune diseases without providing any evidence to support his claims.
Nagra highlighted that age and other autoimmune conditions, not veganism, are associated with a higher prevalence of AIG. He also pointed out that Pitstick's company offers questionable services such as detox programs and at-home genetic testing, which lack clinical evidence. Customers have reported paying large sums of money for these services, raising concerns about the legitimacy of Vidal Coaching and its associated supplements company.