Psychology news

• Teen Cannabis Use Doubles Psychosis and Bipolar Risk, Study Finds

  22-02-2026 10:11 via socialpsychology.org
  Source: Google News - HealthA massive study of over 460,000 adolescents suggests that even occasional cannabis use during teenage years is a major risk factor for severe mental illness. The research followed participants from age 13 through 26, revealing that those who used cannabis were twice as likely to develop psychotic or bipolar disorders, with the disorders typically emerging within two years of initial use, regardless of the teen's prior mental health history.
  
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• Common Pneumonia Bacterium May Fuel Alzheimer’s Disease

  22-02-2026 10:11 via socialpsychology.org
  Source: Science Daily - Top HealthA common bacterium best known for causing pneumonia and sinus infections may also play a surprising role in Alzheimer's disease. Researchers found that Chlamydia pneumoniae can invade the retina and brain, where it sparks inflammation, nerve cell death, and the buildup of amyloid-beta—the hallmark protein linked to Alzheimer's. Higher levels of the bacterium were found in people with Alzheimer's and were tied to more severe cognitive decline.
  
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• Ghana Taking Transatlantic Slavery Case to United Nations

  22-02-2026 10:07 via socialpsychology.org
  Source: DW- top storiesGhana's President Mahama has received the African Union's backing to ask the United Nations to recognize transatlantic slavery as the "gravest crime against humanity." With the support of 40 African Union members, Mahama says the "truth about the story of the transatlantic slave trade must be told." It's estimated that over 400 years, 15 million men, women, and children were kidnapped, most of whom were enslaved. Between 1.5 and 2 million died...
  
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• Former Top General Calls Removal of Trans Troops a Costly Mistake

  22-02-2026 10:07 via socialpsychology.org
  Source: NPRAs 71-year-old retired four star Gen. Stanley McChrystal approaches the podium, the room applauds. "I can't believe he's here," someone whispers. Almost as if he heard them, McChrystal says this into the microphone. "First off, we shouldn't be here." The "here" he refers to is a retirement ceremony for five transgender service members who have been forcibly separated from the military under the Trump administration's second ban, which he calls a...
  
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