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CBS Health News

How sleep impacts your memory

Research reveals that as we age, brain waves become unsynchronized. Because of that, the brain fails to keep new memories while we sleep. The study also points to a new treatment for boosting brain power among the elderly. Matthew Walker, who co-authored the study and released a new book called "Why We Sleep: Unlocking The Power of Sleep and Dreams," joins "CBS This Morning" to discuss the findings.

Could ultrasound scans detect breast cancer?

A new type of ultrasound scan is being tested to see if it's as effective as mammograms in detecting breast cancer, especially in women with dense breast tissue. CBS News' Danielle Nottingham reports.

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