Fiber is a type of polysaccharide[1] that cannot be digested by human enzymes, thus passing through our digestive system almost untouched. Now, you must be thinking “So what is the point of eating fiber?” First of all, fiber contributes to bowel regularity. Because it goes through the intestines undigested, fiber provides mass and attracts water to the feces. When the stool is large and soft, less pressure is needed, making elimination much easier. A diet poor in fiber can lead to constipation, diverticulitis[2], and hemorrhoids[3]. Also, some population studies have linked an increased fiber intake to a reduced risk of developing colon cancer. Second, foods rich in fiber require more chewing, which will make you eat slower. Several studies[4] have shown that by eating slower, people are more likely to recognize body signs of fullness, and stop eating before they are too full. High-fiber foods also fill you up without yielding many calories. This suggests that fiber may help in weight control. Third, consuming fiber-rich foods can help in regulating blood sugar, because some types of dietary fiber slow glucose absorption, meaning that blood-sugar spikes are less likely to occur. Finally, fiber inhibits the absorption of cholesterol, promoting cardiovascular health.