Can a strict carnivore diet replace vaccines? Maybe, but wouldn’t a combination be the smartest defense for your health—especially as we face new infectious threats?
For nearly three years, I have followed a strict carnivore diet—the meat, eggs, and dairy-only “Lion Diet.” Many critics argue that this way of eating should have strengthened my immune system so well that I wouldn’t need the annual flu vaccine. By extension, they suggest that others in the carnivore community don’t need standard immunizations either. Most point to controversies surrounding the COVID-19 mRNA vaccines in the US and UK as reasons to avoid vaccination altogether.
To clarify, I did not receive those mRNA shots; instead, I opted for the “old-fashioned” Chinese vaccines. More importantly, my focus has been on protection against diseases like measles, polio, mumps, and seasonal influenza—illnesses that historically caused widespread mortality and for which vaccines were developed to ensure tragedies like the Spanish Flu would never be repeated.
In this context, vaccines remain an indispensable tool. They are not a substitute for a healthy lifestyle but a critical complement. Vaccination has saved millions of lives by preventing deadly diseases worldwide.
Take my annual flu vaccine, for example. It is updated each year to match the virus’s constant evolution, providing protection that natural immunity alone cannot reliably offer—especially for older adults (I’m 76) or those with compromised metabolic health. Every time I go downtown into Kuala Lumpur, I encounter people who were just half a day ago in the US, Nigeria, Australia, or elsewhere—any of whom might be carrying a bug my body hasn’t yet met.
Yes, the carnivore diet reduces systemic inflammation and has dramatically improved my metabolic health, potentially strengthening my immune system. But we must not forget that over the last 60 years, metabolic health has declined on a population level—and through epigenetic effects, this damage spans generations. Industrialization, environmental changes, urbanization, and widespread processed food consumption have disrupted our microbial heritage—the complex community of microbes that once lived symbiotically within us and played a crucial role in immune regulation.
As I discuss in The Great Unravelling, this microbial ecosystem has become vulnerable to new and re-emerging pathogens.
Regarding the troubling events linked to COVID-19 vaccines in the West, I view these as unfortunate exceptions that should not tarnish the entire concept of vaccination. The risks posed by vaccine-preventable diseases far outweigh the rare side effects of vaccines.
Combining a nutrient-dense diet with vaccination is a balanced, evidence-based approach to maintaining resilience against infectious diseases in today’s world.
Douglas Schorr 
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