Humanity's ancestral diets, characterized by high intake of diverse plant matter, seasonal variations, and often including fermented foods, likely fostered highly robust and varied gut microbiomes. The agricultural revolution introduced significant dietary shifts with grain domestication, and the industrial revolution further accelerated the move towards processed foods, reduced fiber intake, and increased hygiene practices. From an evolutionary perspective, our microbiomes are still adapting to these rapid changes, potentially leading to a mismatch between our ancestral microbial needs and modern dietary realities. Many modern diseases, such as allergies, autoimmune conditions, and metabolic syndrome, have been linked to a 'westernized' gut microbiome, which often lacks the diversity and specific beneficial species present in more traditional, hunter-gatherer populations, suggesting a historical divergence from optimal gut health.