Pasteurized milk gets spoiled quickly

While it is advisable to drink milk, one of the major problems faced is that the milk is getting spoiled very quickly after it is boiled
If the milk is not consumed within three or four hours after it is boiled, it can get spoiled in summer
usually the person drinking the milk does not realize that the milk is spoiled.
Only later after drinking the milk they get a stomach ache, they realize that the milk was responsible
In some cases, milk related problems can also cause insomnia.
Hence a person who cannot drink milk, has to find other sources for calcium and protein