 [ 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 ] hi i recommend a harder exercise type and metformin intake after meals 3times daily eat a lot if vegetables and avoid carbs in your diet enough for breakfast it takes time to treat pcos so be patient if sizes of cysts increased enough to be removed get them surgically removed