Sam Westreich, PhD – Medium

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What is a Gut Microbiome, and Why Is It So Complex?

The potential, and the over-promising, of our newest organ

Jan 25, 2024

What is a Gut Microbiome, and Why Is It So Complex?

Jan 25, 2024

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The Most Interesting Biology Questions, Answered

Dr. Sam Westreich writes about biotech, Silicon Valley, and answers fascinating questions about science.

Sep 23, 2021

The Most Interesting Biology Questions, Answered

Sep 23, 2021

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Substack is Full of Anti-Vaccine Misinformation

Scrolling through, and debunking, my top recommended “Health & Wellness” articles

1d ago

Substack is Full of Anti-Vaccine Misinformation

1d ago

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Wise & Well

Does the Order of Eating at Meals Matter?

Dessert first, or start with a salad? It may matter for managing blood sugar.

2d ago

A woman eating a forkful of pasta at a table. For some reason, cherry tomatoes are scattered across the table.

2d ago

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The Parenting Portal

How Many Trees Are Needed to Match My Wet Wipe Usage?

Measuring the environmental cost of a clean toddler’s face

5d ago

The face of a baby chewing on a wet wipe

5d ago

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Age of Awareness

Why ChatGPT Creates Scientific Citations — That Don’t Exist

It looks convincing, even in White House reports, but it’s often a sign of shoddy backwards research.

Jun 4

Why ChatGPT Creates Scientific Citations — That Don’t Exist

Jun 4

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Revisiting the Myth: Does Coffee Dehydrate Us?

A commenter fears that the caffeine disrupts our electrolyte levels

May 29

Revisiting the Myth: Does Coffee Dehydrate Us?

May 29

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The Parenting Portal

My Child Is a Picky Eater! Could It Be Genetic?

A twin study identifies the top ‘fussiness’ ages — and the best time to intervene

May 26

A young girl looking as as she holds a slice of salami in her hands, close to her mouth

May 26

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Age of Awareness

Debunking the Misinformation in a Viral “Aging After 40” Article

From a “doctor,” 7K claps, and still getting the basics incorrect

May 16

Debunking the Misinformation in a Viral “Aging After 40” Article

May 16

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Wise & Well

Yogurt is Not the Probiotic Miracle It Claims to Be

How marketers have taken the claims about this food’s benefits too far

May 12

A single serve cup of yogurt next to a wristwatch.

May 12

Sam Westreich, PhD

Sam Westreich, PhD

Friend of Medium

PhD in genetics, bioinformatician, scientist at a Silicon Valley startup. Microbiome is the secret of biology we’ve overlooked. https://westreich.substack.com

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