One in every three people seen in the South African primary-care setting have occasional sleeping difficulties, according to the South African Society of Sleep Medicine. Ten percent of those experience chronic sleep problems.
The Society also states that between 30 and 40% of adults suffer from some form of insomnia during any given year, and that between 10 and 15% of these people suffer from severe or chronic insomnia.
Sleep disorders tend to get worse as people get older, and more women than men experience serious sleeping difficulties.
Reviewed by Dr Irshaad Ebrahim, specialist neuropsychiatrist in sleep disorders at The London Sleep Centre and The Constantia Sleep Centre. FRCPsych. April 2018.