In Catalan, we reuse words such as llengua (“language” or “tongue”), as well as word roots such as cuina (“kitchen”), cuiner (“cook”) and cuinar (“to cook”). The same occurs in nearly 2,000 languages worldwide as a result of linguistic and cognitive economy.

Creatine is best known as a supplement for athletes, but a new systematic review asks whether the molecule that fuels muscle might also lift mood. Researchers at the University of Ottawa and the University of Toronto examined five randomized controlled trials of creatine monohydrate in people with mood disorders. Two of the five suggested that creatine, added to standard treatment, reduced depressive symptoms. The other three found no clear benefit. The compound was well tolerated, with only mild digestive system side effects reported. The authors conclude that larger and more balanced trials are needed before creatine earns a place in psychiatric care.

AI-powered conversational tools are becoming a common source of emotional support for teenagers. But without safeguards and careful design, reliance on these systems may bypass opportunities for young people to develop critical relationship skills through person-to-person interactions.