All trending articles
Discover the most popular fiber articles this week. From gut health to weight loss, these trending reads are backed by science and chosen by our community.
How Much Fiber Do You Actually Need?
Most people have no idea. Enter your age, gender, and activity level — get your personalized daily target in seconds.
All trending articles
If you’re new here, these three are the place to start — the foundations everything else builds on.
Do blueberries have fiber? Yes: a cup of fresh blueberries has about 3.6 grams for 84 calories. That’s less than raspberries or blackberries, but frozen wild blueberries carry more fiber by weight, and the berries’ anthocyanins bring benefits of their own.
Does popcorn have fiber? Yes: 3 cups of air popped popcorn have about 3.5 grams, more than a slice of whole wheat bread, for under 100 calories. How you pop it and what you pour on top decide whether it stays a smart snack.
Does oatmeal have fiber? Yes: a cup of cooked oatmeal has about 4 grams, and much of it is beta-glucan, the soluble fiber linked to lower cholesterol. Steel cut, rolled and instant oats carry similar fiber, but they don’t treat your blood sugar the same way.
Does rice have fiber? Only a little if it’s white: a cup of cooked white rice has about 0.6 grams, while a cup of brown rice has about 3 to 3.5 grams. Wild, black and red rice keep their bran too, so the type you pick decides almost everything.
Do sweet potatoes have fiber? Yes: a cup of cooked sweet potato has 6.3 grams, and a medium raw one has about 4 grams. How you cook it matters even more for your blood sugar than for the fiber count.
Do potatoes have fiber? Yes: a medium baked potato with the skin on has about 3.9 grams, and most of that sits in the peel. How you cook it, and whether you let it cool, also changes how its starch behaves in your gut.
Do carrots have fiber? Yes: one medium carrot has about 2 grams, a cup of chopped raw carrots has 3.6 grams, and a cup of cooked carrots has 4.8 grams. Cooking doesn’t strip that fiber away, and your gut bacteria ferment nearly all of it.
Does avocado have fiber? Yes: half a cup of avocado has 5 grams, and a whole medium avocado has roughly 13 grams. That makes avocado one of the most fiber rich fruits you can eat, with almost no sugar.
Do grapes have fiber? Yes, but a full cup of red or green grapes has only about 1 gram, which puts grapes near the bottom of the fruit list for fiber. Raisins carry more fiber per gram, and pairing grapes with higher fiber foods turns them into a snack that counts.
Watermelon does have fiber, but only about 0.6 grams per cup. Because it’s almost 92% water, it’s better for hydration and vitamin C than fiber, though its often discarded rind holds about five times more fiber gram for gram.
Sapote tops the USDA list at 9.5 grams per cup, but if you want to know what fruit has the most fiber in a normal grocery store, it’s raspberries at 8 grams per cup. Guava, blackberries, pears and passion fruit round out the top tier, while bananas and oranges land lower than most people think.
A medium apple with the skin on contains about 4.4 grams of fiber. How much fiber you actually get depends on the apple’s size, whether you eat the skin, and how it’s prepared: whole, as applesauce, or juiced. Read more below to discover more about apples, fiber, and their health benefits.
Free · 7-day starter guide
Get our Gut Reset Quick-Start when you subscribe
Join 47,000 readers getting the Weekly Fiber Digest — research roundups, recipes, and discounts every Thursday.
No spam. Unsubscribe anytime.
Top-Selling Mini Guides
A course, a recipe book, and our top-rated supplement — built for this topic.
You May Also Like
Vegetables with Fiber
Vegetables with Fiber
Vegetables with Fiber
Vegetables with Fiber
Most Popular This Week
1
2
3
4
5
“The 30-day reset finally gave me predictable digestion. I’d tried everything — this was the first thing that explained why.“
Sarah K.
Joined Mar 2026 · 2,840 students
- Bestseller
- Mini Guide
The 30-Day Gut Reset Protocol
$49
$79
ADVERTISEMENT
300* 250
The Weekly Fiber Digest
New articles and research roundups, every Thursday.
No spam. Unsubscribe anytime.