How Much Fiber Do You Need Per Day? Foods, Goals and Easy Tips
Most adults need about 22 to 34 grams of fiber a day, depending on age and sex. The Dietary Guidelines for Americans set the goal at 14 grams for every 1,000 calories you eat. Beans, whole grains, vegetables, fruit, nuts and seeds are the best sources, and most people do not get enough.
How much fiber do you need per day?
The Dietary Guidelines for Americans, 2020-2025 list these daily fiber goals for adults:
| Age | Women | Men |
|---|---|---|
| 19-30 | 28 g | 34 g |
| 31-50 | 25 g | 31 g |
| 51 and older | 22 g | 28 g |
On food labels, the FDA uses a Daily Value of 28 grams for fiber.
Are most people getting enough fiber?
No. The Dietary Guidelines report that more than 90 percent of women and 97 percent of men do not meet the recommended intake for dietary fiber. The guidelines call fiber a nutrient of public health concern for that reason.
What does fiber do in the body?
Fiber is the part of plant foods your body does not digest. MedlinePlus describes two types:
- Soluble fiber dissolves in water and forms a gel. Oats, beans, apples and citrus fruit contain it.
- Insoluble fiber adds bulk and helps food move through the digestive system. Whole grains, nuts and many vegetables contain it.
Fiber supports regular digestion and helps you feel full after a meal. Most plant foods have a mix of both types, so variety matters more than counting each kind.
Which foods are high in fiber?
- Beans and lentils: black beans, chickpeas, lentils, split peas
- Whole grains: oats, barley, brown rice, whole wheat bread and pasta
- Vegetables: broccoli, carrots, Brussels sprouts, sweet potatoes, leafy greens
- Fruit: berries, pears, apples and oranges, eaten whole rather than juiced
- Nuts and seeds: almonds, chia seeds, flaxseed
The Nutrition Facts label shows the grams of fiber per serving. A food with 20% Daily Value or more is considered high in that nutrient.
How can you add more fiber without discomfort?
Adding a lot of fiber at once can cause gas and bloating. Go step by step:
- Add one high-fiber food a day for a week, then add another.
- Drink more water as you increase fiber.
- Swap, do not stack. Choose whole grain bread in place of white, or beans in place of some meat.
- Leave the skin on fruits and vegetables when you can.
- Start the day with oats or a whole grain cereal and add fruit.
Should you take a fiber supplement?
Food comes first, because high-fiber foods also provide vitamins and minerals. Some people add a supplement when food alone is not enough. If you are curious about digestive support products, read our guides to Colon Sweep and Digestive Enzyme, and check each Supplement Facts panel.
Fiber supplements can affect how some medicines are absorbed. Ask your pharmacist about timing.
When should you talk to a doctor?
See a doctor if you have:
- A change in bowel habits that lasts more than a few weeks
- Blood in your stool
- Ongoing belly pain or bloating
- Weight loss you cannot explain
Also ask before making big diet changes if you have a digestive condition, since your fiber needs may be different.
FAQ
How many grams of fiber should a woman over 50 eat?
The Dietary Guidelines for Americans list 22 grams a day for women 51 and older. Men in the same age group have a goal of 28 grams.
What is the easiest way to get more fiber?
Swap refined grains for whole grains and add beans or lentils to meals a few times a week. Keep fruit and vegetables with the skin on where possible.
Can you eat too much fiber?
A quick jump in fiber can cause gas, bloating and cramps. Increase slowly and drink plenty of water. If discomfort continues, talk to your doctor.
Is soluble or insoluble fiber better?
Both matter. Soluble fiber forms a gel and insoluble fiber adds bulk. Eating a range of plant foods gives you both.
These statements have not been evaluated by the Food and Drug Administration. Natural Extracts products are not intended to diagnose, treat, cure, or prevent any disease. Check with your doctor or pharmacist before starting any supplement.
