10/10/2026
Jimmy Welch
The Incredible, Edible Egg:
The Brain Food Your Doctor Told You to Skip
You sang it. Admit it. *The incredible, edible egg.*
Yes, I'm showing my age. I don't care, because the jingle was right and the last 40 years of egg-bashing was wrong. I'm the crazy chicken lady and I'm not done yet.
For decades you were told to toss the yolk, eat the white and fear the carton. Meanwhile the research has been stacking up in the opposite direction and the newest studies are about your BRAIN
Let's get into it.
The Headline: Eggs and Alzheimer's Risk
Two large studies of older adults found the same thing: **people who eat eggs have a significantly lower risk of Alzheimer's dementia.**
- **Loma Linda University (Adventist Health Study-2):** Adults who ate **more than one egg a week had a 47% lower risk of Alzheimer's dementia** than those who rarely or never ate eggs. The researchers named **dietary choline as the main driver** of that link.
- **A 2026 study of older adults:** Eating eggs **five or more times a week was linked to a 27% lower risk of Alzheimer's.** Even small amounts counted: about **17% lower at 1–3 eggs a month and 20% lower at 2–4 eggs a week.**
- **Choline intake studies:** Intake around **350 mg a day** was linked to the *lowest* risk of Alzheimer's diagnosis in older adults. **Low choline intake was linked to higher rates of dementia and Alzheimer's.**
- **A yolk-choline trial:** **300 mg a day of egg yolk choline improved verbal memory.**
These are observational studies. They show a strong, repeated link, not a guarantee. But the pattern is consistent across studies, and nothing about it says "skip the yolk."
And it's the **yolk** that carries the weight.
Choline: The Brain Nutrient 90% of Us Are Missing
Choline is the nutrient almost nobody talks about, and almost nobody gets enough of. **Over 90% of Americans eat less than the recommended amount.**
Your brain depends on it:
- **Choline builds acetylcholine,** the neurotransmitter behind memory, focus, and learning.
- **Choline is a structural part of every cell membrane,** including the membranes of your brain cells.
- **It's essential in pregnancy.** Low choline intake is tied to neural tube defects and reduced cognitive function in the baby.
The best food sources on earth are **egg yolks** and **organ meats** (liver, kidney, heart). One large egg gives you roughly **150 mg of choline**, nearly all of it in the yolk.
Do the math. Eat the whites only and you toss the part that feeds your brain.
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“But the Cholesterol!"
Yes. One large egg has about 200 mg of cholesterol. And your brain is **starving for it.** Roughly a quarter of the cholesterol in your body lives in your brain, where it builds and insulates nerve cells.
Here's what no one told you:
- **Your liver makes cholesterol every single day.** Eat more, and your liver makes less. Eat less, and it makes more. Your body runs this system.
- **LDL isn't the villain. Oxidized LDL is.** And oxidation comes from **seed oils, sugar, chemical additives, dyes, and smoking,** not from a farm-fresh egg.
- **Eggs tend to raise HDL (the protective kind)** and shift LDL toward large, fluffy particles, the type not linked to heart disease risk.
- In one study, **3 whole eggs a day reduced insulin resistance, raised HDL, and increased LDL particle size** in men and women with metabolic syndrome.
- **Multiple studies have found no association between egg consumption and cardiovascular disease.**
The egg wasn't the problem. The toast, the cereal and the hash browns fried in vegetable oil next to it were.
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What's Inside One Egg
Eggs are called nature's multivitamin for a reason. They hold everything needed to turn a single cell into a living chick.
**One large egg (about 77 calories, 6 g protein, 5 g fat, trace carbs):**
| Nutrient | % Daily Value |
| Selenium | 22% |
| Riboflavin (B2) | 15% |
| Vitamin B12 | 9% |
| Pantothenic acid (B5) | 7% |
| Vitamin A | 6% |
Plus smaller amounts of almost every vitamin and mineral your body needs: calcium, iron, potassium, zinc, manganese, vitamin E, and folate.
**Almost all of it is in the yolk.** The white is protein only.
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A Perfect Protein
Your body can't make 9 of the amino acids it needs. Eggs deliver all 9, in the right ratios. That's why scientists measure protein quality against the egg, which scores a **perfect 100** on the biological value scale.
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Your Eyes Need Yolks Too
Egg yolks contain **lutein and zeaxanthin,** two antioxidants that collect in the retina and protect it. Diets rich in these nutrients are linked to lower rates of **macular degeneration and cataracts,** two leading causes of vision loss as we age.
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Eggs for Weight Control
Eggs are close to zero carbs, rich in protein and fat, and score very high on the **Satiety Index,** which measures how full a food keeps you.
- In one study, 30 overweight and obese women ate either an egg breakfast or a bagel breakfast with the **same calories.** The egg group felt fuller and **ate less for the rest of the day and the next 36 hours.**
- In an 8-week study, the egg breakfast group **lost 65% more body weight, 16% more body fat, had a 61% greater drop in BMI, and a 34% greater drop in waist circumference** than the bagel group.
Same calories. Very different results.
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Not All Eggs Are Equal
This part matters as much as everything above.
By the time a grocery store egg reaches the cooler, it's **4–6 weeks old on average.** It came from a hen who never saw sunlight, never touched the ground, and barely had room to turn around. A hen kept like that doesn't produce your healthiest food.
**Buy fresh. Buy local.** Find a farmer's market, a farm stand, or the neighbor with a backyard flock. Pastured hens, eating bugs and greens in the sun, lay yolks that are deep orange for a reason. It's worth the drive.
And if you can raise a few hens yourself, do it. Join the crazy chicken ladies. We have a great time.
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The Bottom Line
The food system sold you fear of the most nutrient-dense food in your kitchen, then sold you a boxed substitute. Stop buying the boxed version. Every dollar you spend is a vote.
Eat the yolk. Eat it often. Your brain has been asking for it.
*Just a few Berry Good Thoughts...*
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*Information in this post is educational and based on published research. Statements have not been evaluated by the FDA. This content is not intended to diagnose, treat, cure, or prevent any disease. Talk with your healthcare provider about your individual needs.*
