Stomach upset, including uncomfortable bloating, constipation, diarrhoea with fatigue and weakness, brain fog, and rectal bleeding from internal hemorrhoids, can all be signs that your gut is out balance, said Dr. Dixit.
But because these are also signs of other conditions, don't try to self-diagnose. Keep a diary of what you're eating and the symptoms you're having, then share it with your doctor or a gastroenterologist.