Our last diagnosis would be idiopathic, simply meaning, we don t know. Patients that exercise or have bleeding disorders can often have blood in their urine without a good explanation. These patients get the same work-up listed above to ensure they don t have a treatable condition. I would suggest you go and see a urologist for a full evaluation. To answer you other questions, it is unlikely that forceful intercourse can injure the kidney.
Cigarette smokers have up to a four times higher incidence of bladder cancer than non-smokers.
The risk correlates with the number of cigarettes smoked, the duration of smoking, and the degree of inhalation. The risks has been observed in both sexes. Former smokers have a somewhat reduced incidence of bladder cancer compared to active smokers. It is said to take a cessation of 20 years to approach levels of non smokers. This information is provided for general medical educational purposes only.