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Dietary fiber is defined to be plant components that are not broken down by human digestive enzymes. [1] In the late 20th century, only lignin and some polysaccharides were known to satisfy this definition, but in the early 21st century, resistant starch and oligosaccharides were included as dietary fiber components.
Why is fiber so important? Fiber is a type of carbohydrate that the body can’t digest, yet it plays a crucial role in maintaining overall health. There are two types of fiber: soluble and insoluble.
For adults aged 65 and up, research suggests having at least 1.2 grams of protein per kilogram of body weight to combat muscle loss that happens with aging. ... Why is fiber important for health?
Tim Spector, a top nutrition scientist, told Business Insider that most people get enough protein in their diets, but not fiber. His advice included eating plant-based protein sources.
Vitamins and minerals are essential to the proper functioning and maintenance of the human body. [114] There are 20 trace elements and minerals that are essential in small quantities to body function and overall human health. [114] Iron deficiency is the most common inadequate nutrient worldwide, affecting approximately 2 billion people. [115]
The main action of dietary fiber is to change the nature of the contents of the gastrointestinal tract and how other nutrients and chemicals are absorbed. [8] [9] Soluble fiber binds to bile acids in the small intestine, making them less likely to enter the body; this, in turn, lowers cholesterol levels in the blood. [10]