Which diseases affect infertility

Patient's question:

Patient Age: 26
Current General Condition: Hello doctor, I would like to have a child. My libido is normal, but it has slightly decreased. My sexual intercourse duration is only about 15 minutes. After having sex, I sneeze when I wake up the next morning, and my physical condition is a bit weak. I have chronic pharyngitis. Will this condition affect fertility?

Doctor's answer:

1. Varicocele with dilated and congested veins leads to an increase in testicular temperature, thereby affecting sperm production.
2. Blood stasis causes elevated pressure in the spermatic veins, preventing fresh arterial blood from entering the testes, resulting in a lack of oxygen and nutrients within the testes, which consequently impairs sperm development.
3. During varicocele, blood from the adrenal veins and renal veins refluxes into the testicular tissue, causing the local blood to contain biologically active substances such as catecholamines, cortisol, 5-hydroxytryptamine (serotonin), and prostaglandins. These substances can exert toxic effects on the testes, ultimately leading to infertility.