Recent research about fiber has brought healthy complex carbs back into the news. It seems that in addition to being heart healthy and helping to keep cholesterol in check, its really good for your brain. Heres a look at what the new research says plus some other surprising health benefits of eating a diet rich in fiber.

1、Raspberries——It delays brain aging

based on research that showed older mice that consumed high-fiber diets had reduced rates of inflammation in their guts, scientists did a "genetic analysis of inflammatory markers" on humans and looked at the immune cell in the brain known as microglia. Researchers have found that "a high-fiber diet reduced inflammation in the brains microglia," according to Medical News Today. Inflammation in microglia can cause a decline in memory and cognitive abilities as we age. Human diets rich in fiber can keep microglia inflammation down and may be helpful in combating dementia or Alzheimers.

2、Sweet potatoes——It decreases your risk of diverticulitis

Diverticulitis occurs when pouches in the lining of the intestine, known as diverticula, become inflamed. Diverticula often develop as people get older. When the diverticula are inflamed, it can cause abdominal pain, nausea, diarrhea or constipation. According to WebMD, a diet rich in fiber may both soften and add bulk to the stool, making it easier to pass through the colon, decreasing the risk of the diverticula becoming inflamed.

3、Black beans——It promotes healthy gut bacteria

The research that found fiber is good for the brain was based on research that showed fiber is good for the gut in mice. Fiber "feeds the billions of bacteria in our gut," as reported in The New York Times, and when our gut bacteria is happy, they help to keep the intestines and immune system working well. The mice that were fed low-fiber diets developed inflamed intestines, put on weight, and had higher blood sugar levels. While it was the healthy gut bacteria that kept these problems from occurring in some mice, it was the high-fiber diet that led to the healthy gut bacteria.

4、Avocadoes——It promotes healthy bones

Heres another benefit that we dont automatically associate with a high-fiber diet: healthier joints and bones. Care2 reports that "eating more fiber may help prevent rheumatoid arthritis and build stronger bones." But, its not the fiber that directly affects the joints and the bones; its the healthy gut bacteria fed by the fiber that can keep us from developing health problems with rheumatoid arthritis or osteoporosis.

5、Apples——It prevents hemorrhoid pain

If youre susceptible to hemorrhoid flareups, its important to add fiber to your diet, according to Harvard Health Publishing. Adding fiber to your diet can help to soften the stool; a softer stool is less likely to aggravate hemorrhoids as it passes by them, which can cause pain or bleeding. During an active flare-up of hemorrhoids, fiber pills may be necessary to quicken the process, but eating a steady diet of fiber-rich foods can keep the flare-ups from happening in the first place.

Notice that various forms of the word "inflamed" pops up frequently in almost all of these health benefits. Perhaps whats more of a surprise here isnt how fiber is good for you, but how fiber is good for gut bacteria and how healthy gut bacteria keeps inflammation down.

Thats something to remember the next time youre deciding between an apple and a glass of fruit juice.

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