It has long been known that chronic inflammation is a risk factor for male fertility, largely due to its effects on sperm health. According to a study published in 2015 in the Journal of Reproduction & Fertility, inflammatory reactions in the male genital tract have a negative impact on sperm quality and, consequently, fertility.

A 2021 article cites a connection between chronic inflammation and male fertility in patients with ulcerative colitis, a bowel disease. Other inflammatory conditions that can affect the prostate and sperm include prostatitis, epididymitis and orchitis, which all have infection in common as the cause.

One of the most common inflammatory diseases is psoriasis, which differs from the others in that it is an autoimmune disease. According to the National Psoriasis Foundation, psoriasis is an immune-mediated disease—a disease with an unclear cause that is characterized by inflammation caused by dysfunction of the immune system—that causes inflammation in the body.

Psoriasis affects more than 3 percent of the U.S. population,