Cholesterol and Dementia Study — Nutrition for Brain Health

Let me tell you—if someone had handed me this study 10 years ago, I would’ve laughed it off.

Back then, I thought cholesterol was the enemy. A heart attack waiting to happen. Something to keep as low as possible.

But this study? It flips that script—especially if you’re in your 60s, 70s, or beyond.

It’s one of the 10 studies I keep on hand to help explain why I focus so much on real food, protein, and fat for healing.

Researchers tracked people born between 1901 and 1902 (yep, a while ago!) and looked at their cholesterol levels starting at age 70. What they found shocked even the scientists.

The people with higher cholesterol levels at ages 70, 75, and 79 actually had a lower risk of dementia between ages 79 and 88.

That’s right—higher cholesterol later in life was linked to a reduced chance of losing brain function.

If you’re serious about nutrition for brain health, this changes the game.

Once you see it, you can’t unsee it.

So… what does this mean for you?

First off—this doesn’t mean you should go out and eat nothing but bacon (though I’m not saying no to a good breakfast either).

But it does mean we need to rethink the whole “lower cholesterol is always better” message. Especially for older adults.

Our brains are made up of nearly 60% fat. Cholesterol is essential for hormone production, cell repair, and brain function. So if your body’s running low on it, that can affect how your brain ages.

And here’s the kicker: This protective effect was only seen in the people with the highest cholesterol levels—over 270 mg/dL.

That’s way above the levels most doctors are aiming for. But for these folks, it may have helped protect their brains from dementia.

It’s another sign we need more context around cholesterol and dementia.

Clear. Straight-up. No fluff.

This isn’t a miracle fix—but it’s a start

I’m not telling you to ignore your doctor. I’m not saying everyone needs sky-high cholesterol.

But I am saying the conversation around cholesterol needs more nuance—especially if you’re older and trying to stay sharp, resilient, and independent.

Nutrition for brain health isn’t about avoiding every gram of fat. It’s about giving your brain the fuel it needs to function.

When I was surviving on salad… I was freezing, moody, and starving

I get this on a personal level.

There was a time when I thought eating low-fat everything and living off rabbit food would make me healthy.

Spoiler: it didn’t.

I was cold all the time. Cranky. My hair was falling out. And I had zero energy.

Once I added more animal protein and healthy fats, everything changed. My mood stabilized. My energy came back. My brain fog started to lift.

I wasn’t “perfect” overnight—but it gave me the fuel I needed to heal.

Here’s what you can do right now

If you’re in your 60s, 70s, or beyond—and you’re worried about memory loss, independence, or energy—it’s time to take a closer look at what you’re really feeding your brain.

Try this:

• Don’t fear fat. Your brain needs it. Include foods like eggs, steak, liver, salmon, and full-fat dairy if they work for you.
• Get your numbers—then get context. If your cholesterol is high, talk with your provider about age, overall health, and this newer research.
• Focus on real food. The more processed your diet is, the less nourishment your brain gets.
• Build muscle, not fear. Strength training supports blood flow to your brain—and helps you stay independent longer.

Remember: you can’t outwillpower bad biochemistry. But you can start feeding your body what it actually needs.

Because nutrition for brain health isn’t just a trend—it’s your future. And these small shifts are part of smart, sustainable healthy aging tips.