Background

Infertility affects approximately 15% of the world’s population, with male factors being responsible for 40-50% of these infertility cases. Moreover, it has been seen that in recent decades this problem has worsened. Different factors of the exposome have been postulated to be responsible for the decrease in reproductive capacity, among which environmental and lifestyle factors stand out. Dietary and environmental determinants, physical activity, sedentary lifestyle, smoking or excess consumption of alcohol or certain drugs have been related to different chronic diseases. However, the relationship of these factors to reproductive health has been less studied.