I realized this several weeks back, and have since then stopped eating bananas until I can find out a actual reason why that is, and through my several weeks of sporadic researching and looking for an answer, I have still not come across a possible cause for this. I already {through family genetics} have bad circulation, which causes my hands to turn deep blue and purple and sometimes parts of my fingers black, but I found that when I would eat a banana the discoloration would be much worse, with an addition of severe hand numbness only in my left hand {and on a few occasions on my right as well} which would normally last for about 3-4 hours. Since I have stopped eating bananas my cicrulation has gotten much better, and my hands have not been numb at all.

Does anybody have a possible insight to this?

My consumption of bananas was about 1-3 a day.