Medically reviewed by Jamie Johnson, RDNFibrous vegetables such as broccoli and carrots can boost butyrate.Credit: bhofack2 / Getty ImagesKey TakeawaysButyrate is a short-chain fatty acid produced in the gut and serves as fuel for intestinal cells.Until there are more human studies, butyrate supplements and at-home tests for butyrate capacity or levels have little to recommend them.The most effective way to increase butyrate levels in the body i…