Okay guys I think you shouldn't talk if you don't know what you are talking about... There are anatomics reasons why UTI are much more common in women than in men, the main reason is that women's urethra is much shorter than men's and also its proximity to the anus which makes it much easier for enterobacteriaceae family to colonize the Urinary tract in women...
Moreover if myself as a Medical Doctor, receive a male patient with a Urinary tract infection diagnosis I won't say okay it's just a UTI have some antibiotics and you are good. Why? Because since UTI are so uncommon in men and are usually secondary to other processes such as the presence of kidney stones, prostatic disease, Urinary tract malformations and other primary causes a doctor should feel obligated to discard any of this conditions...
Of course older men are commonly diagnosed of UTI mainly due to benign prostatic hyperplasia... But UTI in young men, around 10, 20, 30, 40 years is a rare condition... At least not even close to common as it is in women
For this purposes, specially the presence of kidney stones could lead to excessive health care demand and could be a reason for visa refusal.