Medical Research & Innovations · Sep 11, 2026 · 9 min read

A study of 358,957 men found that testosterone therapy is safe when prescribed for the right reason. For the one in three men taking it without a diagnosis, the cardiovascular risk is dramatically higher.

The testosterone therapy debate has been one of medicine’s most contested arguments for over a decade. Early observational studies raised alarming signals about cardiovascular risk. Industry-funded randomized trials…

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Sunday, September 13, 2026 Published today: 0 articles

Psychology

A study of 1.6 million social media posts found that adding moral language increases engagement, but only up to a point. The most moralistic posts perform worse than posts with no moral language at all.

The debate about moral language and social media has been running for years. Researchers have documented that posts expressing moral…

8 min read · Nature Read →

Medical Research & Innovations

Researchers sequenced 4,526 samples from 714 mother-infant pairs and found that a mother’s gut bacteria colonize her baby’s gut, not her vaginal or breast milk bacteria. And her gut predicts whether the baby will get eczema.

The clinical advice given to expectant parents about gut health has been organized around two primary mechanisms for decades. Vaginal…

10 min read · Nature Read →

Psychology

Researchers followed 1,925 couples across three waves and found that narcissism and relationship quality influence each other simultaneously. The person with narcissistic traits is also being changed by the relationship they’re destroying.

The standard model of narcissism in romantic relationships runs in one direction. A person enters a relationship carrying elevated narcissism,…

9 min read · Journal of Personality and Social Psychology Read →

Psychology

Researchers measured narcissism in 45,000 people across 53 countries and found the same pattern everywhere. Young men consistently score highest, and the gap widens in certain types of societies.

The psychology of narcissism has a geography problem. The overwhelming majority of research on the trait has been conducted in the United States, Western Europe, or Australia. The…