Fennel, cumin, dill, coriander, anise, caraway and of course parsley are all considered part of the same family. They all have the ability to suppress gas.The theory behind this is that they are rich in essential oils which can increase the effect of digestive juices and kill bad bacteria. Of all the above, fennel and coriander were found in a 2016 study to be natural bactericides. Their ability to delay gastric emptying showed great promise to those participants who suffered from colitis, abdominal pain and cramping. Start incorporating some of these herbs in your cooking not only for digestive health but also for a variety of new taste sensations.