Fiber is an important part of a healthy diet. It is essential to our overall health and keeps our digestive system moving smoothly.

- **Promotes regularity:** Fiber adds bulk to your stool and softens it, preventing constipation.
- **Improves gut health:** It helps sweep waste through your intestines and feeds a healthy gut microbiome, which can reduce your risk for colon cancer.
- **Balances blood sugar:** Fiber slows down the digestion and release of sugar into your bloodstream, leading to more stable blood sugar levels.
- **Aids weight management:** Fiber-rich meals tend to be lower in calories and keep you feeling full much longer.

## How Much Fiber Do I Need?

The National Academy of Medicine recommends the following daily fiber intake based on age and sex:

| Demographic | Age 50 or Younger | Older than Age 50 |
| --- | --- | --- |
| Women | 25 grams | 21 grams |
| Men | 38 grams | 30 grams |

## Soluble vs. Insoluble Fiber

For optimal health, you need a balance of both types of fiber:

- **Soluble Fiber:** This type dissolves in water to form a gel-like material. It slows down digestion and is highly effective at lowering cholesterol and blood sugar.
  - **Common sources:** Oats, beans, apples, bananas, citrus fruits, avocados, carrots, and psyllium, which is commonly used in fiber supplements.
- **Insoluble Fiber:** This type does not dissolve in water. It acts like a broom, adding bulk to your stool and helping food move more efficiently through your digestive system to prevent constipation.
  - **Common sources:** Whole wheat, nuts, beans, potatoes, cauliflower, broccoli, and leafy greens.

## How Can I Get More Fiber in My Diet?

Aim to get both types of fiber from a variety of whole-food sources. A great goal is to include a good source of fiber at every single meal.

- **Stay hydrated:** To avoid discomfort as you increase your fiber intake, increase your liquid intake at the same time.
- **Eat more beans:** Beans are an incredibly rich source of both soluble and insoluble fiber. Just 1/2 cup of black beans boasts around 6 grams of fiber, and 1/2 cup of kidney beans comes in at nearly 8 grams. Lentils, navy beans, and pinto beans are similarly excellent options.
- **Load up on berries:** Berries are fiber powerhouses. Blackberries and raspberries contain about 8 grams of fiber per cup. Tossing a handful of raspberries, blackberries, or blueberries onto your morning oatmeal adds natural sweetness and a massive fiber boost.
- **Sprinkle on seeds:** Chia, sesame, pumpkin, and sunflower seeds add a satisfying crunch and flavor to salads, yogurts, and cereals, while also providing a healthy dose of fiber.
- **Use the Healthy Eating Plate Method:** Developed by Harvard nutrition experts, this method is a simple visual guide for meal building. Half of your plate should be fruits and vegetables, one-quarter should be lean protein like meat, fish, tofu, beans, or nuts, and one-quarter should be whole grains or starchy vegetables.

## Source Note

For more information about the Healthy Eating Plate, visit The Nutrition Source from the Department of Nutrition at the Harvard T.H. Chan School of Public Health.