Another food that helps with constipation is apples. One medium sized apple, skin on, has around 4.8 grams of fiber, which is already 19% of your RDI. While most fiber is insoluble – meaning it is incapable of being dissolved in liquid – apples actually have soluble fiber in the form of pectin, which is a dietary fiber. Pectin helps pull water into the colon, which works to soften stool and cause easier bowel movements and alleviate constipation. So the next time you can’t go number two, reach for an apple and see how it works wonders!