Well it seems that eating almonds at mealtimes may help reduce glucose excursions in the short term and improve glycaemic control in the long term . Good news if you have diabetes and like nuts.
However, the picture is more complex for bananas. Apparently there are different species of banana but they all have a reassuringly favourable glycaemic index of about 60 - 70 . The best bananas are, of course, Fairtrade bananas.
1. Cohen AE, Johnston CS. Almond ingestion at mealtime reduces postprandial glycemia and chronic ingestion reduces hemoglobin A(1c) in individuals with well-controlled type 2 diabetes mellitus. Metab. Clin. Exp. 2011 Sep;60(9):1312-1317. Available from: http://www.ncbi.nlm.nih.gov/pubmed/21489570
2. Hettiaratchi UPK, Ekanayake S, Welihinda J. Chemical compositions and glycemic responses to banana varieties. Int J Food Sci Nutr 2011 Jun;62(4):307-309. Available from: http://www.ncbi.nlm.nih.gov/pubmed/21250902