Good sources of natural fiber for your diet include pears, apples, oat bran, vegetables and legumes. Eating more fiber helps the body to detoxify in an easy and healthy way. You Might Also Like Cabbage contains anticancer and antioxidant compounds. November 21, 2015 Celery February 5, 2014 Fennel helps stimulate digestive and gastric juices February 6, 2016