Are there any immediate changes people notice after switching from milk coffee to its black coffee? Stating that one of the first changes is a reduction in daily calorie intake, Dt Amreen Sheikh, chief dietitian, KIMS Hospitals, Thane, said: “Milk coffee, especially with sugar, adds hidden calories from milk fat and lactose. Black coffee, in contrast, is almost calorie-free. “Over six months, cutting out milk and sugar from coffee can create a small but steady calorie deficit. While black coffee alone won’t cause weight loss, it can help with weight management when combined with balanced meals and physical activity.