‌According to the Alzheimer's Society, there are a number of habits worth adopting. The experts say: "Doing regular physical activity is one of the best ways to reduce your risk of dementia. Doing a combination of these activities will help you to reduce your risk of dementia." Eating an unhealthy diet may also cause health problems, including obesity, which can be linked to an increased risk of dementia." Early Alzheimer’s symptoms often begin with mild memory lapses — such as struggling to recall recent conversations, people’s names, or recently learned information like events, places or where items have been left.