Shayan Sen Profile picture
Sep 6, 2025 10 tweets 4 min read Read on X
Alzheimer’s isn’t caused by bad genes.

It’s metabolic damage that slowly shrinks your brain.

It begins 20 years before doctors ever catch it.

Here’s the blueprint to stop memory loss — before it’s too late: 🧵 Image
1. Memory Loss

Alzheimer’s doesn’t start when grandma forgets your name.

It begins 10–20 years earlier: neurons suffocating, the hippocampus shrinking, and brain metabolism collapsing.

By the time symptoms show, half the brain’s fuel system is gone. Image
2. Why your doctor misses it

Medicine has been obsessed with amyloid plaques for 30 years.

Billions spent, dozens of drugs failed.

But plaques are a symptom, not the cause.

The fire alarm, not the fire.

Meanwhile, metabolic damage keeps burning your brain down. Image
3. The real root: brain insulin resistance

Neurons run on glucose + ketones.
But when insulin stops working, the brain can’t use all the fuel.

• Neurons starve
• Synapses collapse
• Memory fades

This is why researchers now call Alzheimer’s Type 3 Diabetes.
4. 5 ways it destroys your brain

• Glycation: sugar binding to neurons like rust
• Inflammation: cytokines frying synapses
• Plaques: dead protein clumps, byproducts of chaos
• Shrinkage: hippocampus loses 10–15% volume
• Mitochondria: energy plants go dark Image
5. The real risk factors (not genetics)

• High fasting insulin (>8 µIU/mL)
• HbA1c above 5.5%
• Belly fat (waist-to-height >0.5)
• Poor sleep + blue light at night
• ApoE4 gene = higher sensitivity Image
6. How to bulletproof your brain

Forget crossword puzzles, real prevention is metabolic:

• Strength train (muscle = glucose sponge)
• Daily movement (walk after meals)
• Intermittent fasting (boosts ketones, clears plaques)
• Eat protein + healthy fats, cut down refined carbs
• Sleep 7–9 hrs (deep sleep = brain detox)Image
7. Key supplements for brain defense

• Creatine (fuels mitochondria)
• Omega-3s (DHA = brain insulation)
• Magnesium threonate (crosses Blood Brain Barrier)
• Curcumin (anti-inflammatory)
• Urolithin A (mitochondrial cleanup)

These target the actual drivers of Alzheimer’s. Image
8. Tests to request now

Don’t wait for memory loss.

Ask your doctor for:

• Fasting insulin (aim 3–5 µIU/mL)
• HbA1c (<5.3%)
• ApoE genotype (know your risk)
• MRI volumetrics if family history
• Omega-3 index

What gets measured gets managed. Image
FInal Thoughts:

Alzheimer’s isn’t inevitable.
It’s not “bad luck” or “just age.”
It’s metabolic damage over many years.

Fix insulin resistance, protect mitochondria, and it can be prevented.

Bookmark, RT and follow @DrShayanSen for more threads on root causes of disease.

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More from @DrShayanSen

Jan 13
Belly fat isn’t just stored calories.

It’s active tissue that hijacks your hormones and metabolism.

That’s why dieting alone works for some, and fails for others.

Here are 7 research-backed ways to eliminate it 🧵
First, Here's why it's deadly:

Increases risk of 13 types of cancers.

Visceral fat is stored deep around your organs. It acts like an endocrine organ, secreting chemicals that:

• Trigger chronic inflammation
• Disrupt insulin & testosterone
• Increase your risk of heart disease, stroke, cancerImage
It poisons your metabolism

Visceral fat isn’t passive. It dumps fatty acids directly into your liver, raises triglycerides, and stiffens arteries.

Result?

• Insulin resistance
• High blood sugar
• Plaque formation in arteries
• Lower testosterone

This is how it ages you from the inside out.
Read 13 tweets
Jan 9
You eat clean.

You train hard.

But still feel tired, sluggish, and stuck.

That’s often not a discipline problem.

Here’s what it usually means and how to fix it 🧵 Image
Thyroid Dysfunction

The Thyroid regulates:

• Fat loss
• Longevity
• Hormonal balance
• Energy production
• Mood and brain function
• Skin, hair, and nail quality

Most people never get answers because their labs can be deceiving.

Here's why: Image
2. The fault in our system:

The thyroid runs on a chain of command:
Hypothalamus (TRH) → Pituitary (TSH) → Thyroid (T4)

But T4 must convert to T3, the active hormone.

And if your conversion fails, everything slows down.

But we rarely test T3 or conversion blockers. Image
Read 13 tweets
Jan 7
Grey hair isn’t just about age.

Today, 1 in 4 people go grey before 30.

Not aging.
Your hair stops producing color early.

Here’s what’s bleaching your hair from the inside out (and how to stop it) :🧵 Image
This is not just genetics. It’s environmental sabotage.

1 in 4 people under 30 already have grey hair.
By 2030, that number will hit 40%.

This is cellular war
Grey hair is your mitochondria waving a white flag.

The cause isn’t age, it’s cellular sabotage. Let me explain… Image
Melanocyte collapse from modern toxins:

• Air pollution
• EMFs from devices
• Nutrient-stripped diets
• Chronic mineral imbalances

This is cellular burnout disguised as “aging.”

But the real damage happens deeper inside... Image
Read 12 tweets
Jan 5
Alzheimer’s isn’t caused by bad genes.

It’s metabolic damage that slowly shrinks your brain.

It begins 20 years before doctors ever catch it.

Here’s the blueprint to protect your memory loss: 🧵 Image
1. Memory Loss

Alzheimer’s doesn’t start when grandma forgets your name.

It begins 10–20 years earlier: neurons suffocating, the hippocampus shrinking, and brain metabolism collapsing.

By the time symptoms show, half the brain’s fuel system is gone. Image
2. Why your doctor misses it

Medicine has been obsessed with amyloid plaques for 30 years.

Billions spent, dozens of drugs failed.

But plaques are a symptom, not the cause.

The fire alarm, not the fire.

Meanwhile, metabolic damage keeps burning your brain down. Image
Read 11 tweets
Jan 2
Diabetes starts 10 years before diagnosis.

Most people miss the early signs until it hits their brain, heart, and waistline.

The good news: it’s reversible.

Here’s the step-by-step blueprint to fix it: 🧵 Image
1. First, Understand this Myth:

“Diabetes runs in my family; I’m doomed.”

TRUTH: Only 10–15% of type 2 diabetes risk is genetic (Nature Reviews Genetics).

The Pima Indians had near-zero diabetes until processed foods arrived. One generation later → 50% diabetes rates. Image
2. How diabetes silently destroys you:

Fat → turns into a toxin factory (ceramides)
Muscle → insulin blocks protein synthesis (atrophy begins)
Brain → hippocampus shrinks, dementia risk ↑
Lifespan → 10+ years lost via glycation

This is what it can lead to: Image
Read 14 tweets
Dec 31, 2025
Everyone is chasing supplements and biohacking.

But they’re overlooking one of the most powerful longevity tools.

It isn’t a pill.
It’s heat.

Here’s why sauna use outperforms most drugs and fancy gadgets:

1. Reduces cardiovascular death risk by 50%: Image
In a 20-year Finnish study (KIHD, 2,300+ men):

• 2–3x/week: 27% lower cardiovascular mortality
• 4–7x/week: 50% lower risk of dying from heart disease

Even after adjusting for lifestyle

Translation: Sit in heat, live longer. Image
It’s a longevity cheat code

Okinawans and Scandinavians are the world’s longest-living communities and all use heat rituals.

“Sauna is the closest thing to a miracle drug for aging.” – Dr. Rhonda Patrick @foundmyfitness
Read 16 tweets

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