Coming up on today's show.

This traditional idea that eating lots of carbs, that spikes lots of insulin, and then that causes the resistance.

In of itself, I don't think that that's actually what's happening.

As people become metabolically unhealthy, they become insulin resistant, there does seem to be this link to cognitive decline.

There are studies that look at cognitive decline over time, and in people who have normal blood sugar controls, so they have an HBA1C below 5.7. Then they look to be with pre-diabetes

above 5.7, up to 6.5. They had faster cognitive decline and then it was even faster in people

who had type 2 diabetes. When a certain part of the brain becomes active, it asks for more

energy. There's this thing called neurovascular coupling. And then that part of the brain delivers more blood flow.

It starts to divert blood flow to that area.

If you don't have healthy blood vessels, that can't happen.

And we know that endothelial function and blood vessel function declines as we become less metabolically flexible over time.

Most people who have Alzheimer's disease also have vascular disease in the brain.

For most people, it's not separate entities. It's part of the same disease process. The nutrients

is the thing that I focus on the most. If you get the nutrients, it doesn't really matter

where the nutrients come from. Then we don't have to argue about keto versus plant-based

versus paleo versus carnival. Like, just get the nutrients that you need. And that's it.

Tommy, you are an expert in many different areas, but I want to start our conversation

talking about brain health.

All right.

And you make this comparison between the brain and muscle.

So let's connect the dots there.

So one of the reasons why I do that is because

...