The banana definitely has to go but to my surprise the dates actually stabilize blood sugar levels.....or so I've read.
Since I've lost 100lbs over the last four years by way of cutting out junk/fast food and a low-carb/keto lifestyle in addition to lifting weights again, I have a berry smoothie damn near every single day with one or two dates in it. It really helps with craving soda or sweets in which I've had neither in the last four years with the exception of 90% Dark Chocolate. Never thought I'd see the day that I'd be eating 90% Dark Chocolate.....sometimes I even eat 100%!