By Newsbreak Producer Taliesha Naidoo - Today marks World Brain Day - a day dedicated to raising awareness about neurological disorders and promoting brain health. As the world commemorates the day, medical experts are deeply concerned about the rise of dementia in Sub-Saharan Africa. According to the World Health Organization, 57 million people currently live with dementia globally and this number will almost double every 20 years. Dr Patty Francis, President of the Neurological Association of South Africa says dementia does not happen overnight as it often starts with decades of unmanaged risk factors such as high blood pressure, obesity, smoking, poor sleep and alcohol abuse...