It’s not known exactly how much CBD lowers blood sugar, as most studies have been on animals, not humans. While some research suggests CBD may help improve insulin sensitivity and reduce inflammation, more clinical trials are needed to determine its precise effects on blood sugar levels.It’s not known exactly how much CBD lowers blood sugar, as most studies have been on animals, not humans. While some research suggests CBD may help improve insulin sensitivity and reduce inflammation, more clinical trials are needed to determine its precise effects on blood sugar levels.