Renowned gastroenterologist Dr. Savita Srivastava reveals that a child’s lifelong health is shaped in the first 1,000 days—mainly by gut bacteria, not genes. Combining research and her experience as a physician and mother of a child with food allergies, she shows how modern practices disrupt the microbiome that guides immune and brain development.

The rise in allergies, autoimmune disease, and autism may stem from this gut-health crisis. This guide offers practical steps to nurture your baby’s microbiome—from birth choices to feeding—empowering parents to help prevent chronic disease early.