Your Brain May Be Keeping Score Earlier Than You Think

Your Brain May Be Keeping Score Earlier Than You Think

A new study found a nearly 13-year difference in dementia-free life.

And it came down to three surprisingly basic things.

We spend a lot of money trying to protect our brains as we get older.

Supplements.

Nootropics.

Brain games.

Special diets.

People are taking mushroom powders, ketones, fish oil and just about anything else promising better memory and a healthier brain.

Some of those things may have value.

But a new study published this week is a reminder that the biggest threats to your brain may be much more obvious.

High blood pressure.

Diabetes.

And smoking.

Researchers looked at 12,409 adults who were around 56 years old on average and followed them for more than two decades.

They wanted to know something a little different than most dementia studies.

Not just:

Who developed dementia?

But:

How many years did people actually live without it?

That’s where things got interesting.

Almost 13 More Years

People who had none of those three risk factors at midlife averaged about 30.1 dementia-free years after age 55.

People who had all three averaged only 17.5 years.

That’s a difference of about 12.6 years.

Even more interesting, the numbers dropped steadily as the risk factors piled up.

No risk factors: about 30.1 dementia-free years.

One: about 26.3 years.

Two: about 21 years.

Three: about 17.5 years.

That’s a pretty dramatic difference for three things that most people associate primarily with heart disease.

But that’s the point.

Your cardiovascular health and your brain health aren’t separate issues.

The same blood vessels supplying your heart are part of the same vascular system supplying your brain.

Years of high blood pressure can damage blood vessels.

Poor glucose control can damage blood vessels.

Smoking damages blood vessels.

Eventually, that damage adds up.

Dementia Doesn’t Start at 80

I think this is the bigger message from this study.

We tend to think about dementia as something that suddenly happens when someone gets old.

You turn 75 or 80 and start worrying about your memory.

But the groundwork may have been developing decades earlier.

The researchers measured these risk factors around midlife, not when people were already elderly.

That means what’s happening with your blood pressure and blood sugar in your 40s and 50s may matter to the brain you have in your 70s and 80s.

And this is where I think modern health advice sometimes gets backwards.

We wait until someone’s memory starts declining and then start looking for something to fix it.

A supplement.

A medication.

A special diet.

A brain-training program.

It makes a lot more sense to protect the machinery while it’s still working.

This Doesn’t Mean You’re Guaranteed 13 Years

There is an important distinction here.

This was an observational study.

It doesn’t prove that lowering your blood pressure, preventing diabetes or quitting smoking automatically adds exactly 12.6 dementia-free years to your life.

People with healthier vascular profiles may differ in other ways too.

But the relationship was hard to ignore.

As the number of vascular risk factors increased, dementia-free years consistently decreased.

And these aren’t obscure laboratory markers that nobody knows how to change.

They’re things we already know how to work on.

What I Would Pay Attention To

Know your blood pressure.

Not what it was at your physical three years ago.

Know what it is now.

Pay attention to fasting glucose, A1C and signs of insulin resistance before they become full-blown type 2 diabetes.

If you smoke, quitting is going to do more for your long-term health than almost anything you can buy at a supplement store.

Then handle the basics that affect all of them.

Eat mostly real food.

Keep your weight and waistline under control.

Build muscle.

Walk.

Exercise regularly.

Sleep.

Limit the ultra-processed food that makes up such a huge percentage of the modern diet.

None of that sounds very exciting.

That’s probably why nobody can charge you $79.95 a bottle for it.

My Bottom Line

I’m interested in supplements.

I’m interested in herbs.

I’m interested in nutrition strategies that might help protect the brain as we age.

But none of them should distract us from the basics.

If your blood pressure is 160/100, your blood sugar is out of control and you smoke a pack of cigarettes every day, I wouldn’t start by worrying about which mushroom is best for memory.

Start with the things doing the most damage.

Because one of the most important lessons coming out of dementia research is becoming increasingly clear:

Protecting your brain later in life may start with protecting your metabolic and cardiovascular health decades earlier.

And the best time to find out your numbers isn’t when you’re 80.

It’s now.

Study: Hu J, Coresh J, Smith JR, et al. Midlife Vascular Risk Burden and Dementia-Free Survival Years: The Atherosclerosis Risk in Communities Neurocognitive Study. Neurology Open Access. 2026.

I hope this helps. I put 3 videos you may be interested in below if you missed them.  Also, some great stuff from Primal Nutrition!

Stay healthy,
Victor
Primal Nutrition / Southern Keto

P.S.

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