Apples
Apples are a fiber-rich, tasty fruit. Pectin, a form of soluble fiber, makes up a large portion of an apple's overall fiber content. Apple pectin contains prebiotic properties. A 2016 study discovered that apple pectin might support healthy gut flora, reduce inflammation, and control weight growth and fat buildup in obese rats.
Pectin boosts butyrate, a short-chain fatty acid that feeds helpful gut bacteria while lowering the number of pathogenic bacteria. More study is needed to properly understand pectin's advantages in people. Apples, in addition to their prebiotic advantages, have been shown in studies to promote heart health and may even lower your risk of asthma and other respiratory illnesses.