What causes low sperm motility?

The main causes of low sperm survival rate include: 1. Medical conditions: Genital infections such as prostatitis and seminal vesiculitis can reduce sperm quality and lower the sperm survival rate. In addition, varicocele is a common factor affecting sperm viability, as it causes circulatory disturbances in the testicles and negatively impacts sperm quality. 2. Unhealthy lifestyle habits: Chronic sleep deprivation, lack of adequate rest, and prolonged exposure to high-temperature environments can all alter sperm quality and reduce sperm survival rate. Bad habits such as smoking and excessive alcohol consumption also significantly affect both sperm count and quality. 3. Dietary factors: Deficiency in essential elements required for sperm production—such as zinc and selenium—in the diet can impair sperm generation and maturation, leading to a low sperm survival rate. 4. Other factors: Aging, environmental exposures (such as toxic substances and pollutants), and prolonged abstinence may also negatively affect sperm survival rate.