As living standards rise, diets and lifestyles have improved significantly. For many, rich, fatty meals have become a daily staple—one reason modern people are increasingly overweight. Experts also note: Is obesity a cause of male infertility? What exactly is going on here?Today, our editor will explain it for you!
Modern medical research indicates that obesity causes male infertility primarily through two mechanisms:
1. Obesity can lead to varying degrees of sexual dysfunction;
2. Excessive fat storage in obese individuals causes excessive fat accumulation in the scrotum. The specific causes of male infertility are detailed below.
How obesity impacts male infertility:
1) Thermal insulation: Fat retains heat, obstructing normal scrotal heat dissipation. Testicles require a temperature 1.5–2°C lower than body temperature; otherwise, sperm production is impaired.
2) Compression: Excess scrotal fat compresses the spermatic cord vessels. Compression of arteries leads to testicular ischemia, while compression of veins causes testicular congestion. Both conditions are detrimental to spermatogenesis and constitute causes of male infertility.
3) Weakened cremaster muscle function: The scrotum contains the cremaster muscle. When this muscle contracts, it allows the testicles to move up and down, aiding blood return from the spermatic vein. Excess fat in the scrotum impedes normal cremaster muscle activity. Over time, the cremaster muscle gradually weakens and thins.
Thus, obesity-related erectile dysfunction, decreased libido, and sperm damage all contribute to male infertility. Experts therefore emphasize that maintaining a healthy weight and preventing obesity are crucial for male reproductive health.