Fiber: What Is It and Intake Recommendations

Fiber

Ensuring an adequate intake of fiber can be a challenge for many individuals. According to the 2020 to 2025 Dietary Guidelines, a vast majority—90% of women and 97% of men—fall short of meeting the
recommended daily fiber intake.

Men

Aim for 38 grams of fiber per day (About 14 grams for every 1000 calories).

Women

Aim for 25 grams of fiber per day (About 14 grams for every 1000 calories).

Fiber is not digested, does not convert to sugar, and therefore does not raise blood glucose levels.

Makes you feel full sooner and longer.

Lowers blood cholesterol.

Prevents constipation.

To support optimal health, it’s advised that most healthy adults aim to include the following amounts of fiber in their daily diet:

AgeFemaleMale
2-3 yrs14 gm14 gm
4-8 yrs17 gm20 gm
9-13 yrs22 gm25 gm
14-18 yrs25 gm31 gm
19-30 yrs28 gm34 gm
31-50 yrs25 gm31 gm
+50 yrs22 gm28 gm

Insoluble fiber

Found in bran, whole grains, some vegetables and nuts.

May help lower glucose and cholesterol.

Helps prevent constipation by increasing stool volume and aiding it to pass easily through the intestines.

Found in oats, beans, citrus fruits and barley.

Soluble fiber

Increase fiber slowly – add no more than 5 grams a day. Adding it too quickly can cause diarrhea, gas and bloating. Drink plenty of water and non-calorie fluids. A high-fiber diet can cause constipation if you do not get enough fluid.

Average fiber intake

Use brown rice rather than white rice

Include beans at least 3x per week

Eat whole fruit rather than drinking juice

Snack on fruits, vegetables, popcorn, or high fiber crackers

Eat the skin on fruits and vegetables when possible

Increase vegetable portions at lunch and dinner

Use whole-grain bread rather than white bread. Whole grain should be the first item listed on the food label. Avoid large amounts of processed grains.

increasing fiber intake

FruitsServing SizeGrams of Fiber Per Serving
Apple with skin1 medium4 gm
Figs, dried2 medium4 gm
Pear1 Medium5.5 gm
Strawberries1 cup4 gm
Grains, Cereals and PastasServing SizeGrams of Fiber Per Serving
Bran cereal1/2 cup8 gm
Brown rice, cooked1/2 cup2 gm
Pumpernickel bread1 slice3 gm
Whole wheat pasta1/2 cup3 gm
VegetablesServing SizeGrams of Fiber Per Serving
Broccoli1/2 cup2 gm
Brussel sprouts1/2 cup3 gm
Spinach1/2 cup2 gm
Legumes, Nuts and SeedsServing SizeGrams of Fiber Per Serving
Baked beans, canned1/2 cup5-8 gm
Lentils1/2 cup8 gm
Peanuts, dry roasted1/4 cup3 gm
Sunflower seeds1/4 cup2 gm

Academy of Nutrition and Dietetics https://www.eatright.org/health/essential-nutrients/carbohydrates/easy-ways-to-boost-fiber-in-your-daily-diet

Department of Health and Human Services. Dietary Guidelines for Americans, 2020-2025. 9th Edition. December 2020. Accessed 04/2024

https://www.dietaryguidelines.gov/sites/default/files/2020-12/Dietary_Guidelines_for_Americans_2020-2025.pdf Accessed 04/2024.

This site is for educational purposes only. Talk to your doctor or healthcare provider before making any decisions about your health.   

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