By Newsbreak Producer Matthew Veeran - A new local study reveals that nearly one-third of South Africans suffer from nocturnal sleep problems, leading to severe consequences for daily concentration and workplace productivity. Medical experts warn that while poor sleep is often dismissed as a normal part of modern life, chronic deprivation can trigger clinical depression and significantly elevate the risk of stroke and cardiovascular disease. Ahead of formal diagnoses, experts - like neurologist Dr. Sarel Theron - are urging the public to practice strict sleep hygiene and to seek professional intervention if sleeplessness consistently impairs daytime functioning...