CommentaryThe author has presented a basic science review surrounding the biological and metabolic derangements that occur in overweight males and its relation to fertility potentials. Infertility, defined as the absence of pregnancy after one year of unprotected intercourse. Male factor infertility constitutes 25 to 30% of all cases of infertility and contributes, in combination with female factors, to another 30%. Reduced semen quality has been found to be a universal trend in the last few decades because of the dramatic changes in the life-style of civilized communities around the world. Alarmingly, one of the health problems in modernized societies that lead to infertility is obesity.Recent estimates show that the increasing prevalence of obesity is recognized worldwide, with few exceptions. The International Obesity TaskForce estimates that at least 1.1 billion adults are currently overweight, including 312 million who are obese; and that with the new Asian Body Mass Index (BMI) criteria, the number is even higher [1]. Most importantly, there is emerging evidence that overweight is increasing not only in adults, but in children too [1].Subfertile men have significantly higher BMI than the general population. Overly, an abnormal BMI (less than 19 kg/m² or more than 30 kg/m ² ) has been associated with reduced testicular volume (WHO 1987), and reduced semen quality suggesting impairment of spermatogenesis (Jensen et al. 2004). Czernichow and his colleagues gathered data from 14 previous studies, including nearly 10,000 men. They looked at each participant's sperm count and BMI, which is a measure of body fatness, and is calculated based on weight and height. Men with BMI of more than 25 kg/m ² are considered overweight, and those with a BMI exceeding 30 kg/m² are considered obese. Interestingly, they found that among men, who were of normal weight, 24 percent had low sperm counts and 2.6 percent had no viable sperms. Moreover, among the overweight men, 25.6 percent had low sperm counts, and 4.7 percent had no viable sperms. Of the men who were obese, 32.4 percent had low sperm counts and 6.9 percent had no viable sperms [2].The article in focus has tackled the condition "traumatic epididymo-orchitis" to be a novel possible cause of infertility in obese males, and has presented a fairly arguable reasoning. Obese men have redundant lumps of fat at the suprapubic and inner thigh regions. These chunks of fat could cause mechanical inflammation to the scrotal contents, including the testes and epididymi, by rubbing and sheering forces; especially while sitting, walking, jogging and performing various physical activities. Looking at the clinical data, epididymo-orchitis post mumps infection, causes sterility in 7-13% of affected patients; as orchitis affects the testicular interstitium more than the Leydig and Sertoli cells, but sperm counts, mobility, and morphology could be affected. Testicular varicocele, the commonest surgical condition that disturbs the thermoregulation within the testes, can cause infertility...