How much fiber do you need a day?

Men under the age of 50 need at least 38 grams of fiber a day, according to Mayo Clinic. Women in the same age range require only 25 grams. Fiber needs decrease slightly as one ages.

Getting the right amount of fiber in a day is important for one's bowel health, according to Mayo Clinic. It increases the size and weight of one's stool, which helps prevent constipation and makes stool easier to pass. It assists with the maintenance of a healthy blood sugar level by slowing down the rate at which sugar is absorbed by the body. Fiber also helps lower cholesterol levels by reducing the amount of low-density lipoprotein, sometimes referred to as bad cholesterol, in the body.