If you eat taro root, it can have several different effects on your body. Small amounts may help to regulate blood sugar levels, while larger amounts can have a laxative effect. Taro root is also a good source of dietary fiber, so it can help to promote regularity. Some people may also find that taro root can help to relieve constipation.if you eat taro root, it can have a laxative effect. It can also cause an allergic reaction in some people. If you have a reaction, it may include itching, swelling, and difficulty breathing. In severe cases, it can lead to anaphylaxis.