Extreme climatic events harm health, but dietary strategies may influence nutrition. From 2020 to 2023, severe drought caused widespread food insecurity and undernutrition in eastern Africa. We examined diet, nutrition, and food insecurity among Kenyan Daasanach. Meat consumption was associated with higher BMI in men, while fish consumption was associated with higher BMI in men but lower BMI and food insecurity in women. These findings highlight the role of traditional diets in nutritional stability among pastoralists.