Complex sentence: Deafness can also result from environmental factors or a combination of genetic and environmental factors, including certain medications, peri-natal infections (infections occurring before or after birth), and exposure to loud noise over an extended period.
Split into simpler sentences: Deafness can also result from environmental factors or a combination of genetic and environmental factors. Environmental causes of hearing loss include certain medications, specific infections before or after birth, and exposure to loud noise over an extended period.