Onions are beloved throughout the world, but are they suitable for you at any given time and circumstance? Please join our discussion of the suitability of onions in various situations. Onions may be indigestible to a person with high pitta factors such as rashes, ulcers, boils or infections. Onions may causes gasses to ‘repeat’ or burp up after the meal. The sulfanic acid within onions may increase pungency causing reflux.