Daily dietary fiber guidelines commonly recommend approximately how many grams per day for adults?

• A. About 15–20 grams per day
• B. About 5–10 grams per day
• C. About 25–30 grams per day
• D. About 40–50 grams per day

Answer: (C)

Daily dietary fiber guidelines for adults point to about 25–30 grams of fiber each day. Fiber is the indigestible part of plant foods that adds bulk to stool and helps food move smoothly through the digestive tract. It comes in soluble form, which can help with cholesterol and blood sugar by slowing digestion, and insoluble form, which adds bulk and speeds intestinal transit. Reaching roughly 25–30 grams gives you the best balance of digestive health, heart benefits, and glycemic control recommended by dietary guidelines. You can hit this target by including a variety of fiber-rich foods at meals—fruits, vegetables, whole grains, legumes, nuts, and seeds. Many people consume less than this, around 15–20 grams, so increasing intake gradually and drinking water helps prevent discomfort if you’re not used to a high-fiber diet.