What are the main causes of testicular cancer?

Testicular cancer is one of the most common cancers in men, especially those between ages 15 and 35. It can be caused by a variety of factors, some that are more well-known than others.
The most significant risk factor for testicular cancer is a person’s age. The peak incidence is usually between 20 and 39 years old, but other risk factors may vary among different races and ages.
Another cause of testicular cancer is genetics. Having relatives who have had any kind of testicular cancer increases your chances as unfortunately it can be hereditary. Other conditions like undescended testicles or abnormal development may also increase the risk for certain types of cancers in this area due to an increased exposure to hormones during crucial developmental stages within the individual's life cycle .
Environmental influences such as radiation or pesticides could contribute to mutation within the cell lines leading to an increased risk level for developing certain types of tumors including testicular cancers.  In addition, poor lifestyle choices such as smoking cigarettes, drinking alcohol excessively (more than 5 drinks per day), being overweight/obese, eating high fat processed foods are all contributing factors that have been linked with higher risks associated with developing certain kinds of tumors including those found in or around the genitalia region .  Lastly it has been found that people suffering from HIV infection could also be at elevated levels when compared with their healthy counterparts when concerning possible contracting forms various kinds oncology related illnesses — this particular demographic has shown double the rate occurrences when not factoring in sufferers with HIV immune systems which further complicates matters significantly more so in terms our prognosis outlooks over longer terms periods based upon increased prevalence rates overall relative public health screenings done throughout year-on-year changes general population subsets country wide & potentially world wide too if taken into perspective deeper levels interest matter said before-hand accordingly