All of the above. Eating to much sugar for example will store as fat and affect weight., not one food group can supply all the vitamins and nutrients you need.
Mike is feeling jealous of the time Sergio is spending with will.
Sergio’s interest have changed
Sergio and mike may no longer share the same values
Sergio has changed for the worse
A digestion system specialist is a gastroenterologist
How badly the person is injured (how deep the cut or how bad the tear) and their body type.