
Heavy Cannabis Use Linked to Schizophrenia, Especially among Young Men
A huge Danish study shows that up to 30 percent of psychosis diagnoses in young men could have been prevented if these individuals hadn’t used marijuana heavily

Gary Stix is a senior editor at Scientific American. Follow Gary Stix on Twitter @gstix1 Credit: Nick Higgins

A huge Danish study shows that up to 30 percent of psychosis diagnoses in young men could have been prevented if these individuals hadn’t used marijuana heavily

Venture capitalists and start-ups don’t mind losing money, but dealing with a bank run is a whole different story

What a patient and family members can expect from the recently approved drug lecanemab—and what more is needed to help stop Alzheimer’s dementia

Neural circuits that label experiences as “good” or “bad” and the emotional meaninglessness of facial expressions are some standouts among 2022’s mind and brain breakthroughs...

Diminished risk-taking behaviors and other benefits may explain why many people with bipolar disorder keep consuming cannabis despite some dire downsides

The freaky physics phenomenon of quantum tunneling may mutate genes

Teaching simple basics in school about masks, handwashing and ethics can stave off misconceptions in adulthood

Canceling Roe means that other parents with high-risk pregnancies will not have the options that we had

SARS-CoV-2 appears to travel widely across the cerebral cortex

Our physical safety perimeters have widened, a study suggests

In hindsight, 2020 witnessed a disproportionate mental health burden on women and young people

Symptoms subsided for one woman after a carefully targeted neural circuit was stimulated

Recent findings have implications for the design of prostheses. Care for a third thumb, anyone?

Persistent rumination may be an attribute that lets us think our way out of despair—a process enhanced through talk therapy

This winter the novel coronavirus may kill more people than heart disease, cancer, stroke, Alzheimer’s or diabetes

It has been a tough year, but science still brought us some weird, cool and quirky findings

I’m not certain the antibodies it contains are any more therapeutic than Trump’s favorite unproven drug, hydroxychloroquine

It kills more people than the flu, contrary to Trump’s claims, and also surpasses stroke, Alzheimer’s and diabetes

Artificial intelligence still needs to bridge the “sim-to-real” gap. Deep-learning techniques that are all the rage in AI log superlative performances in mastering cerebral games, including chess and Go, both of which can be played on a computer...

The preeminent sociologist Arlie Russell Hochschild discusses the control over one’s feelings needed to go to work every day during a pandemic
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