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Fiber refers to a diverse group of carbohydrates that humans can not digest, instead they pass through most of the digestive system unchanged. The recommended intake of fiber is 38 grams for men and 25 for women, but most people eat only have that from 15-17 grams per day.
Fiber is mostly found in plant food, including fruits, vegetables, legumes, grains, nuts, seeds, and more.
From gut bacteria to weight loss, it is often considered a fundamental part of a healthy diet. Most people have a very basic understanding of fiber, and tend to lump it all into one category.
Types of Fiber
Soluble fiber blends with water in the gut, forming a gel-like substance. It can reduce blood sugar spikes, and has various metabolic health benefits. These include gums, pectins, psyllium, beta-glucans and more.
Insoluble fiber does not blend with the water and passes through the digestive system mostly intact. It functions mostly as a bulking agent, and may help speed the passage of food and waste through your gut. Insoluble fiber include cellulose and lignine.
Fiber in Foods
A few readily available types of fiber include: Avocado (6.7%), artichoke (8.6%), oats (10.6%), almonds (12.5%), blackberries (6.2%), chia seeds (34.4%), sweet potatoes ()2.5%), dark chocolate (10.9%), coconuts (9%), pistachios (10%), walnuts (7%), sunflower seeds (8.6%), spinach (2.2%), tomatoes (1.2%), pumpkin seeds (18.4%), raspberries (6.5%), pears (3.1%).
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