Study reveals fussy eating in children is ‘all down to genes’ – Lincolnshire LiveGenetic differences were found to account for 60% of the variation in food fussiness at 16 months, increasing to over 74% between the ages of three ...2025.01.02Genetic differences were found to account for 60% of the variation in food fussiness at 16 months, increasing to over 74% between the ages of three ...