 [ Symptoms ] can bad blood circulation cause small penis girth for an adult  to be more specific i am 25 years old quite overweightobese and am slightly below avg in girth since being overweightobese can cause a myriad of health issues regarding bad blood flowcirculation could this cause a lack of blood in the penis leading to a smaller girth would losing weight and improving blood flow increase girth would the gains be noticeable [ Disease ] poor circulation can cause all kinds of problems down there not many people know that vitamin c is excellent for the veins and blood vessels and promotes healthy blood flow i use a penis health creme every morning to make sure my penis is getting its daily dose of c and other important vitamins and nutrients you should check these cremes out i think one would help you for sure