digest Lactose Intolerance (Lactase Non-Persistence) that can cause considerable discomfort "Lactose Intolerance (Lactase Non-Persistence)" "Lactose Intolerance (Lactase Non-Persistence)" evolutionary response to the domestication of dairy animals Bowen "Lactose Intolerance (Lactase Non-Persistence)" "Lactose Intolerance (Lactase Non-Persistence)" "Lactose Intolerance (Lactase Non-Persistence)." Lactose Intolerance (Lactase Non-Persistence) "Lactose Intolerance (Lactase Non-Persistence)"