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Dietary Fiber

Dietary fiber is often effective in improving mild constipation. However, it has less consistent results with more severe constipation, possibly worsening symptoms in patients with slow colonic transit (colonic inertia). A physician or registered dietitian can provide individual advice on dietary fiber consumption.

When adding fiber to the diet, it is best to do so slowly over a period of weeks. If gas, bloating or distention occur, try reducing the dose of fiber and reducing consumption of gas-producing foods, such as beans, cabbage, legumes (e.g., peas, peanuts, soybeans), apples, grapes, and raisins.

Experiment with fresh foods and don't be afraid to try new foods and recipes. Here are a few practical tips for adding fiber to your diet.


  • Cook in microwave to save time and nutrients
  • Cook only until tender-crisp to retain taste and nutrients


  • Presoaking reduces the gas-producing potential of beans if you discard the soaking water and cook using fresh water


  • Snack on fruit anytime, anywhere
  • Leave peelings on fruit whenever possible
  • Use fresh and dried fruit in muffins, pancakes, quick breads, and on top of frozen yogurt


  • Choose whole-grain varieties of breads, muffins, bagels, and English muffins
  • Mix barely cooked vegetables with pasta for a quick pasta salad

How much Fiber?

The National Academy of Sciences' Institute of Medicine, gives the following daily recommendations for adults: 38 grams for men and 25 grams for women 50 and younger; 30 grams for men and 21 grams for women 51 and older.

Sampling of dietary fiber content of foods (appx. g/serving)

Source: USDA National Nutrient Database for Standard Reference, Release 17

Food Serving Size Grams of Fiber
Beans (navy), cooked 1/2 cup 9.5
Beans (pinto, black), cooked 1/2 cup 7.7
Chickpeas (garbanzo beans), cooked 1/2 cup 6.2
Lentils, cooked 1/2 cup 7.8
Potato (with skin), baked 1 potato 4.4
Peas (frozen), cooked 1/2 cup 4.4
Mixed Veggies (frozen), cooked 1/2 cup 4.0
Soybeans, cooked 1/2 cup 3.8
Broccoli, cooked 1/2 cup 2.5
Carrots, cooked 1/2 cup 2.3
Carrots, raw 1 carrot 2.0
Green beans, cooked 1/2 cup 2.0
Sweet corn (on the cob), cooked 1 ear 1.8
Vegetable soup (Progresso™) 1 cup 1.4
Lettuce (romaine), raw 1 cup 1.2
Lettuce (green leaf), raw 1 cup 0.7
Celery, raw 1 stalk 0.6
Food Serving Size Grams of Fiber
Raspberries (sweetened), frozen 1/2 cup 5.5
Pears, raw 1 pear 5.1
Raspberries, raw 1/2 cup 4.0
Blackberries, raw 1/2 cup 3.8
Apples (with skin), raw 1 apple 3.3
Oranges, raw 1 orange 3.1
Bananas, raw 1 banana 3.1
Raisins (1 miniature box), seedless 14 g 0.6
Pears, canned in syrup 1/2 cup 2.2
Grapefruit (pink and red), raw 1/2 grapefruit 2.0
Grapefruit (white), raw 1/2 grapefruit 1.3
Orange juice (unsweetened), frozen concentrate 6-fl-oz can 1.7
Applesauce (sweetened), canned 1/2 cup 1.5
Food Serving Size Grams of Fiber
Barley (pearled), cooked 1/2 cup 3.0
Oat bran, cooked 1/2 cup 2.8
Rice (brown), cooked 1/2 cup 1.7
Rice (white, long-grained), instant 1/2 cup 0.5
Bagels 4" bagel 2.0
Bread, whole-wheat, rye 1 slice 1.9
Spaghetti, cooked 1/2 cup 1.7
Bread, raisin 1 slice 1.1
Cereals (Includes brand names)
Food Serving Size Grams of Fiber
Kellogg's All-Bran 1/2 cup 8.8
Kellogg's Raisin Bran 1/2 cup 3.6
Wheatena, cooked with water 1/2 cup 3.3
Shredded wheat, plain no sugar 2 biscuits 5.5
Quaker Oats, honey and raisins 1/2 cup 4.2
Quaker Low fat Natural Granola with Raisins 1/2 cup 2.8
Quaker Instant Oatmeal, apples and cinnamon, with boiling water 1 packet 2.7
Kellogg's Frosted Mini-Wheats 1/2 cup 2.5
General Mills Raisin Nut Bran, Total Raisin Bran 1/2 cup 2.5
General Mills Cheerios 1/2 cup 1.8
General Mills Wheaties 1/2 cup 1.5
General Mills Lucky Charms 1/2 cup 0.7
Kellogg's Frosted Flakes 1/2 cup 0.7
Kellogg's Apple Jacks 1/2 cup 0.5
General Mills Golden Grahams 1/2 cup 0.6
General Mills Trix 1/2 cup 0.4
Kellogg's Fruit Loops, Cocoa Krispies 1/2 cup 0.4
Kellogg's Special K, Corn Flakes 1/2 cup 0.3
Quaker Cap'n Crunch 1/2 cup 0.3
General Mills Rice Chex 1/2 cup 0.1
Food Serving Size Grams of Fiber
Soup, bean with ham (canned) 1 cup 11.2
Pasta with meatballs, tomato sauce, canned 1 cup 6.8
Soup, Progresso Classic Lentil™, canned 1 cup 5.6
Baked pork and beans (canned) 1/2 cup 5.0
French fried potatoes, fast food 1 medium 4.7
Mixed nuts, dry roasted with peanuts and salt 1 oz 2.6
Peanuts, dry roated with salt appx 28 (1 oz) 2.3
Chocolate Milk 1 cup 2.0
Tortilla chip snacks 1 oz 1.8
Cheese pizza, regular crust, frozen 1 serving 1.4
Potato chip snacks, plain, salted 1 oz 1.3
Last modified on June 11, 2014 at 10:27:50 AM