There is no period more critical in a child’s development than its first few months of life, which is why so much attention is paid to what the mother, and the child, eats during that time. Nutritionists like to call it the “golden window” — the slim period of time where a child, if he gets the right nutrients, can set out on a healthy path, or, if he doesn’t, risks irreversible stunting and developmental delays. “Eighty percent of the brain development happens in the first 1,000 days of a child’s life, starting from conception,” says nutritionist Sanjay Kumar Das.