Public Health Night School
René F. NajeraHi, glad you're here! Read an engaging series of lessons designed to demystify public health science. Learn how diseases spread, what drives health trends, and how data saves lives—all in a fun, accessible way. Perfect for curious minds, no PhD required!
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 252 | Founded | 2 years ago | Last Issue | 6 days ago |
| Active | |||||
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phnightschool.substack.comLatest Issues
The Pentagon Wants to Test Everyone’s Testosterone. What Could Possibly Go Wrong?
On July 15, 2026, Secretary of Defense Pete Hegseth announced that the U.S. military would begin screening all service members aged 30 and older for testosterone deficiency every year. Troops younger than 30 may request testing, and anyone...
How Do We Know What We Know?
My uncle once told me, with total confidence, that he knew a man who smoked two packs a day and lived to 97. Therefore, he concluded, cigarettes were probably fine. I was in graduate school at the time, and I made the mistake of trying to e...
Excel to R: What Did You Learn?
Don’t get lost in a forest of questions. (Photo by Evan Dennis on Unsplash
We just spent five posts moving from spreadsheets to scripts. We talked about when Excel starts to strain, how R concepts map onto the ones you already know, how to...
From Raw Excel File to Clean Report: A Complete R Workflow
Post 5 of 5 in the series: From Spreadsheets to Scripts
Congratulations! You’ve made it to the last post. In this series, the goal was not to make you a “real programmer.” The goal was to make your data work less fragile.
Goodbye Pivot Table Panic: Summarizing Public Health Data in R
Post 4 of 5 in the series: From Spreadsheets to Scripts
Pivot tables are one of Excel’s best features. The problem is not that they are bad. The problem is that they can be hard to document, recreate, and automate.
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Authors
The writers behind this newsletter.
Exploring the intersection of science, society, and storytelling. As a public health leader, infectious disease expert, and social epidemiologist, I share insights on vaccines, disease prevention, and the social determinants of health.
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