Experts say that age is a non-modifiable factor affecting IVF success. Women over 35 may experience reduced fertility due to declining egg quality and quantity. Conversely, younger women generally have higher success rates with IVF. Similarly, men over 50 may experience a decrease in semen quality, contributing to lower success rates. Identifying underlying causes of infertility, such as chronic inflammation, endometriosis, PCOS, fibroids, or fallopian tube issues, is crucial for providing timely care during IVF preparation.