Yes like eating too much it can upset your stomach by not eating as your stomach produces stomach acid ready to digest a meal if there is no food then this can cause problems as bloating constipation and heart burn from the build up of stomach acid
eating too much or stress
eating an iron
No, not eating is very healthy for you - not eating for a long time can DEFINITELY upset your stomach because you can get ulcer. - hope this helps:))
what gives you an upset stomach is when you digest your food your food can rise up from the stomach from acid also known as gas building up in your stomach and so as it rises thats when you feel like you have and upset stomach.
Sometimes acid (high pH level liquid) from acidic or citrus fruits such as oranges or lemons can upset your stomach.
Eating grass is a sign of an upset stomach.
no.
From past experiences it has almost always upset my stomach in a bad way.
Yes
MSG
no there is no reason
it depends, if you work TOO hard you will get an upset stomach, along with if you are really dehydrated you may feel nauseas...