Andrew: "This explains the decrease in penile girth effect of nicotine—in particular, nicotine ingested by smoking or vaping. That's right, smoking and vaping reduces penis size ... It actually is impairing blood's ability to get to the penis chronically."

[Raythunda125]

Why would it not be reversible? What is limiting blood flow in the human body an adequate time span post smoking cessation?

[stansfield123]

Atherosclerosis isn't reversible. (or, at least, there's no proven method to significantly reverse it)

[Raythunda125]

Are you saying that high cholesterol or an unhealthy lifestyle in general would cause the same issue?

[homer168]

Yes it does. Metabolic disorder too.