How Melatonin Affects Memory

Most people understand that melatonin functions as a neurotransmitter and can help with sleep. What is now apparent is that melatonin also has powerful antioxidant capabilities, especially as it’s related to the mitochondria, as well as other neurological functions related to memory, according to new research papers.

Researchers used an interesting test of memory in this study. When mice are exposed to a new object, they spend a lot of time examining it on first exposure; when they’re familiar with objects, they have a tendency to ignore them. Researchers exposed young and older mice to new objects and then gave some of the mice a dose of melatonin and two of its metabolites. All the young mice treated the new object as something familiar the next day. The older mice that were not given melatonin said, “Huh? What’s that?” However, older mice that were given melatonin 15 minutes after exposure seemed to remember the new object up to four days later.

The conclusion was that this is a first step to see if melatonin can help with memory in people with cognitive decline, an initial stage related to Alzheimer’s disease. There’s not enough research to say it will work the same way in humans, but there seems to be no downside to taking melatonin on a regular basis with the exception that we don’t know the dosing. If you’ve been taking melatonin for sleep, you may be getting side benefits.

Insiders and Members
In the New Year’s Day memo, I talked about assessing your current health and fitness. I’ve just posted a new Straight Talk on Health that delves into the details of how to assess each category of health. When you log in at drchet.com, follow the Straight Talk on Health link and check it out.

What are you prepared to do today?