If you want a quick healthy snack, then pistachio nuts would be a good choice.The reviewed research had diabetic patients either assigned to a group receiving 25 g of pistachio nuts twice a day as a snack or a control meal without nuts(Parham M, et al. 2014).After 12 weeks the participants had a washout period of 8 weeks before the groups were switched.The results showed that eating pistachios decreased HbA1c (a long-term measure of glucose control) as well as fasting blood glucose. Eating the nuts also reduced systolic blood pressure, body mass index and CRP an inflammatory marker.Nuts are a much better choice than so called nutrition bars if you want a snack.