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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STEM Parenting

Children Won’t Inherit Trauma: Why to Not Fear Epigenetics

How well-meaning people twist this term to make parents feel guilty

1d ago

Children Won’t Inherit Trauma: Why to Not Fear Epigenetics

1d ago

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The Top Reddit Science Stories of This Week, Summarized

The most popular science articles of April 12–18, 2025.

5d ago

The Top Reddit Science Stories of This Week, Summarized

5d ago

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Wise & Well

Pets May Not Provide a Mental Benefit, According to Science

Science, ruining everything we love. Let’s sniff past the headline.

5d ago

Pets May Not Provide a Mental Benefit, According to Science

5d ago

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Predict

Did Colossal Biosciences Really Make a Dire Wolf?

Does changing 20 genes bridge the gap of two million years of divergence?

Apr 15

Did Colossal Biosciences Really Make a Dire Wolf?

Apr 15

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The Top Reddit Science Stories of This Week, Summarized

The most popular science articles of April 5–11, 2025.

Apr 11

The Top Reddit Science Stories of This Week, Summarized

Apr 11

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Wise & Well

Formaldehyde Causes Cancer. So Why Is It Still Everywhere?

It’s in your home and hair salon. A Trump EPA official lobbied for fewer regulations.

Apr 10

Formaldehyde Causes Cancer. So Why Is It Still Everywhere?

Apr 10

Published in
Predict

Fluoride Has An Estimated 3,800% Return on Investment

It makes economic sense — and there’s a clear reason why Republicans are against it.

Apr 8

Fluoride Has An Estimated 3,800% Return on Investment

Apr 8

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The Top Reddit Science Stories of This Week, Summarized

The most popular science articles of March 31–April 4, 2025.

Apr 4

The Top Reddit Science Stories of This Week, Summarized

Apr 4

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 that we’ve overlooked.

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