Deep sleep, memory formation go hand-in-hand. Scientists are also finding links to dementia
This story is part of CBC Health's Second Opinion, a weekly analysis of health and medical science news emailed to subscribers on Saturday mornings. If you haven't subscribed yet, you can do that by clicking here.Shift workers sleeping at erratic hours. Students pulling all-nighters. Menopausal women tossing and turning in bed from hot flashes.There are a host of reasons why people have periods of poor sleep. And anyone who's endured back-to-back nights of sub-par slumber likely knows the result: Feelings of brain fog,…