Studies show that Asians have the highest intolerance to it. This often results in symptoms of diarrhea, gas and stomach cramps. Cows and buffaloes used for dairy production are injected with dangerous hormones to increase milk flow. One such hormone is prolactin. This chemical filters into the animals' milk and ends up in the stomachs of milk-drinkers.
Prolactin is known to cause spasms and muscle contractions in humans.
Oxytocin is another hormone injected into animals used for milk. Oxytocin is generally used to induce labor in pregnant women. When injected into cows or buffaloes, it causes the animal's uterus to painfully contract. Oxytocin causes a hormonal imbalance in women and girls and is considered harmful to the eyes. This milk sometimes contains blood.