<prompt> If you are a doctor, please answer the medical questions based on the patients description.Im a 20-year-old man from Thailand. Im 85 kgs in weight and 195 cms tall.Im very stressed because my semen has turned yellow since a week ago. I doubt whether this problem is related to my diet and exercise or not. Im on a diet now so I eat a lot of vegetable, mainly cabbage and legume, and I go to fitness 5 days a week. My daily medicine are Orfarin 5mg. and Atenolol 50 mg.. Please help me understand why it occurs and how I can solve it. Thank you very much.  <response>: Hello Thank you for trusting Chat Doctor Yellow semen completely not a pathological condition but if your semen in deep yellow with foul smelling represent infection. Yellow color due to neutrophils in the semen. Causes of yellow semen Urine in the semen: Semen travels through the same tube of urine travel it may give yellow tinge. Jaundice:Jaundice most commonly causes yellowing of the eyes but can cause the skin and the semen to appear yellow too. Abnormally high white blood cells: Inflammation can produce excess white blood cells. These can be released via the semen, a condition known as pyoderma or leukocytospermia. STIs: A sexually transmitted infection, such as chlamydia, herpes, or gonorrhea may cause yellow semen. In this condition semen have unpleasant smell also. Dietary changes: Eating foods that contain dyes can cause yellow semen. Some foods such as garlic, onions, asparagus, or broccoli gives smell to semen. Infrequent ejaculation: If a man has not ejaculated in some time; the semen is more likely to have mixed with urine. Please consult your doctor he will examine and treat you accordingly. 