Karl Mehta Profile picture
3x Exited Founder/ CEO of tech cos, Chairman Emeritus- QUIN(Quad), former VC@Menlo Ventures, Author of 2 books, fmr White House fellow. All tweets personal.
May 21 15 tweets 5 min read
BREAKING: Norway's $2 trillion wealth fund ran a 12-month AI experiment.

They gave Claude access to their entire investment workflow.

Result: 213,000 hours saved. 20% productivity boost.

But what they found hiding in the data changed everything:

A Thread 🧵 Image
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Meet Nicolai Tangen, CEO of NBIM - the world's largest sovereign wealth fund.

700 employees managing $2 trillion in assets.

In 2022, he made a strategic decision that would reshape their entire operation.

But first, he had to address significant organizational resistance... Image
May 20 13 tweets 4 min read
Fatty liver is no longer an "overweight person's disease."

NASH is now the fastest-growing reason adults need liver transplants, and fatty-liver cancer is rising in people 15-49.

Here's what's driving it (& how to protect your liver):

1. Cut liquid sugar first. Image
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Liquid sugar hits the liver differently.

Soda, sweet tea, juice, and "healthy" bottled drinks deliver sugar fast, with little chewing or fullness.

Your liver has to process that flood.

Do it daily, and the first thing that changes is not your weight...
May 18 14 tweets 5 min read
Joe Rogan just had the world's top AI safety researcher on his podcast.

He revealed mind-blowing facts about AI that 99% of people wouldn't know...

Even Joe Rogan was speechless.

Be prepared to have your mind blown...

8 uncomfortable truths he exposed: 🧵 Image 1. The Mathematical Impossibility of AI Control

Dr. Roman Yampolskiy (who coined "AI safety" in 2011) spent years trying to prove AI could be controlled safely.

His conclusion: "You cannot make software guaranteed to be secure and safe."

One mistake in a billion = game over.
May 15 15 tweets 4 min read
Matthew Walker is a former Harvard professor who showed 6-hour nights can push your genes toward heart disease and cancer in 1 week.

On Jay Shetty's podcast, he revealed 10 "normal" habits that wreck your sleep, mood, and brain:

1) Checking your phone right after waking. Most people open their phone before they open their blinds.

Walker says this trains your brain to expect a "tsunami of anxiety" every morning.

His fix is stupidly simple:

Give your brain the first 10 minutes before the world gets access to you.
May 12 14 tweets 5 min read
Pranayama is the #1 bio hack on Earth.

It fixes depression, chronic stress, and reverses aging naturally.

Recently, I've been researching its healing benefits. What I found will blow your mind...

Here's what it is and how to perform it the right way (according to science): 🧵 Your breath controls every single function in your body.

Yet 99% of people breathe wrong their entire lives.

This isn't just about oxygen - it's about activating genetic switches that Big Pharma spends billions trying to trigger with drugs.

Ancient yogis mastered this 2,500 years ago.
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May 2 14 tweets 4 min read
Japanese scientists just discovered shocking news about bread and rice:

Mice ate it and gained fat without eating more calories.

Here's everything you need to know (& how to eat carbs without slowing your metabolism): Image
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Important caveat first:

This was a mouse study.

Not proof that bread or rice automatically make humans fat.

But the finding is still wild because it challenges the simple story people tell about carbs and weight.
May 1 12 tweets 3 min read
Andrew Huberman just broke down why sugar cravings are usually not a willpower problem.

They are often a blood-sugar, sleep, and reward-circuit problem first.

Here are 7 science-based levers that make cravings easier to control:

1. Bad sleep makes cravings louder the next day. Not just because you're tired.

Short or fragmented sleep changes appetite, blood sugar control, and the reward value of sweet foods.

So the willpower failure often started the night before.
Apr 29 13 tweets 4 min read
7 signs your brain is losing its backup capacity (You won't notice it as memory loss at first):

1. You only do things you're already good at. Stanford neuroscientist David Eagleman just went on Diary of a CEO.

The key idea: your brain is not protected by "being smart."

It is protected by cognitive reserve: extra pathways when older ones weaken.
Apr 27 18 tweets 5 min read
He predicted:

• AI vision breakthrough (1989)
• Neural network comeback (2006)
• Self-supervised learning revolution (2016)

Now Yann LeCun's 5 new predictions just convinced Zuckerberg to redirect Meta's entire $20B AI budget.

Here's what you should know (& how to prepare): Image @ylecun is Meta's Chief AI Scientist and Turing Award winner.

For 35 years, he's been right about every major AI breakthrough when everyone else was wrong.

He championed neural networks during the "AI winter."

But his new predictions are his boldest yet...
Apr 25 15 tweets 5 min read
Every person over 30 blames aging for their stiff, painful back.

Turns out, it is not your chair or your age.

It is 3 support systems that stop doing their job after years of sitting.

Here is the simple rebuild path: Back pain is not always a "tight back" problem.

Sometimes the back is just the part screaming loudest.

The real issue is often lower down and deeper:

1. stiff hips
2. sleeping glutes
3. a core that cannot brace under load Image
Apr 14 12 tweets 4 min read
A massive Swedish study followed 30,000 women for 20 years.

Sun exposure tracked. Mortality tracked.

The researchers were stunned by what they found.

Here's what avoiding the sun actually does to your lifespan: Image This was the Melanoma in Southern Sweden cohort.

29,518 women.
20 years.

Not a mood survey.

A mortality study: Image
Apr 1 14 tweets 5 min read
Columbia and NYU researchers tracked 11,000 people for 20 years.

Urine tests before. Urine tests after.

When they switched to clean water, their risk of dying from cancer and heart disease dropped 50%.

Here's what was in their water the entire time: 🧵 Image
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The study was run by Columbia University in Araihazar, Bangladesh.

622 adults. All drinking from wells above the arsenic safety limit.

Each was given a water filter.

Researchers tracked urinary arsenic, a direct biomarker of what's inside your body. Image
Mar 30 15 tweets 5 min read
Harvard researchers put 24 office workers in the same room for 6 days.

They changed one thing about the air. The workers didn't know.

Then they tested their brains.

Cognitive scores doubled.

Here's what the air you're breathing right now is doing to your brain: Image Harvard's T.H. Chan School of Public Health. 2016.

24 participants. Full work days. 9 to 5.

An environmentally controlled office space.

Blinded to every condition.

No one knew what was changing. Image
Mar 27 13 tweets 5 min read
Thyroid cancer used to hit people in their 60s.

Now it's the #1 most common cancer in young adults aged 16-33.

According to the National Cancer Institute, diagnoses have tripled since the 1990s.

Here are 8 things destroying your thyroid without you realizing:

1. Tap water Image
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A 2024 meta-analysis found high fluoride in drinking water raises TSH, a marker of reduced thyroid function.

A UK study of 7,935 practices found nearly 2x the hypothyroidism rate in fluoridated regions.

But #2 is hiding in your fridge right now...
Mar 21 15 tweets 5 min read
Testosterone is more than a sex hormone.

It builds muscle, burns fat, and sharpens your focus.

But modern life is killing it... quietly and daily.

Here are 10 daily habits that naturally boost testosterone without pills🧵:

1. Lift heavy weights Squats, deadlifts, and bench press trigger the largest acute testosterone spikes.

But here's what most people get wrong:

Lifting doesn't permanently raise resting T. It works indirectly by cutting fat and improving insulin sensitivity
Mar 19 13 tweets 5 min read
We have proof that HEAT STRESS can reverse the brain's natural decline after 30.

A 20-year Finnish study found that one 20-minute habit activates BDNF, the "neurogenesis protein" that grows new brain cells, strengthens memory, and cut dementia risk by 66%.

Here's the breakdown: Image
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After age 30, your brain starts losing neurons every day.

Most people don't notice until it's too late.

Memory slips. Focus fades. Brain fog becomes "normal."

But it's not normal.

It's a sign that your BDNF levels are dropping. Image
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Mar 17 13 tweets 5 min read
Big Pharma makes $26B/year on ADHD drugs alone.

Meanwhile, a treatment exists that retrains your brain's electrical patterns without a single pill.

It's been tested in 38 randomized trials.

The results are shocking, but not for the reason you think.

Here's what they found: 🧵 Image
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Your brain runs on 5 electrical frequencies:

• Delta (deep sleep)
• Theta (creativity, daydreaming)
• Alpha (calm focus)
• Beta (alertness, problem solving)
• Gamma (peak performance)

When these get out of balance, you get anxiety, ADHD, brain fog, and insomnia. Image
Mar 15 13 tweets 5 min read
There's ONE biohack that Huberman, Brecka & Rhonda Patrick all swear by.

It's not cold plunge. Not creatine. Not NAD+.

It costs $2/day & is the most proven way to protect your brain, fight depression & slow cognitive decline.

Here’s what it is, how it works, and how to use it: Image
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Starting at age 30, your brain begins to shrink.

Your hippocampus (memory and learning center) deteriorates fastest.

Most people accept this as inevitable.

But a study of 1,575 brain scans found one nutrient that stops it: Image
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Mar 13 13 tweets 5 min read
Harvard scanned meditators' brains and found something that should've made headlines everywhere.

10-20 minutes a day doesn't just "reduce stress," it physically grows new brain tissue, shrinks your fear center, and reverses age-related cortical thinning.

Here's the breakdown:🧵 Image
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Most people treat meditation like a productivity hack.

Breathe. Relax. Move on.

But in 2005, Harvard neuroscientist Sara Lazar put meditators inside an MRI machine.

What she found changed everything we thought we knew about the adult brain. Image
Mar 7 12 tweets 4 min read
We have proof that specific plant compounds can reverse the "inevitable" cognitive decline that starts in your 30s.

New research shows they rebuild the exact brain chemicals that control focus and memory, the ones your body stops producing in your 30s.

Here's the breakdown: 🧵 Image
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After 30, your brain quietly starts running low on the chemicals that control focus, memory, and mental speed.

Dopamine. Acetylcholine. Serotonin.

Most people don't notice until it's been happening for years.
Mar 3 13 tweets 5 min read
Your body is aging faster than it should.

Not because of your diet or your genetics.

It's because "zombie cells" are piling up inside you, silently causing inflammation, brain fog, and stubborn fat.

Here are 9 science-backed ways to flush them out:

1. Eat more strawberries. Strawberries have the highest concentration of fisetin. The most potent natural senolytic Mayo Clinic found out of 10 tested.

In aged mice, fisetin extended median AND maximum lifespan.

You'd need ~130 a day though. A supplement is more realistic. Image