Nutrition is your fastest-acting lever on the microbiome: enough fiber and prebiotics, fermented foods, a wide variety of plants, fewer ultra-processed foods, and optionally time-restricted eating.
fasting
Pull-out practical checklists for daily life: ten-point sleep hygiene, time-boxed stress routines, three-tier weekly movement plans, step-by-step time-restricted eating, hydration, daylight, travel and shift-work strategies, and a weekly nature walk.