A 2026 PRISMA-compliant systematic review and meta-analysis in Drug and Alcohol Review consolidated 30 publications covering 202 prevalence estimates from 120,041 South African adolescents: pooled lifetime prevalence was 35.09% for alcohol use, 25.47% for tobacco use, and 10.47% for cannabis use.1 Research Highlights 30 publications, 202 estimates: pooled data covered 120,041 South African adolescents. Alcohol …
Parenteral clomipramine has a strong clinical myth around it: bypass the gut, raise parent-drug exposure quickly, and maybe accelerate rescue in severe depression or OCD. A 2026 systematic review found the route advantage was not clearly proven: in depression, 5 RCTs without high risk of bias did not show clear IV or IM superiority over …
A 2026 fMRI meta-analysis of 11 studies found a narrow anxious-depression signal: 829 anxious-depression patients differed from 681 non-anxious MDD patients in left middle temporal gyrus activation (SDM-Z = 2.046, p = 0.020), while healthy-control contrasts centered on the anterior commissure and right middle frontal gyrus. The calibrated interpretation is not “amygdala and insula hyperactivity …
A 2026 meta-analysis of 56 controlled trials found the clearest gamma-frequency neuromodulation signal in schizophrenia: overall symptoms improved vs. control (g = −0.46), global cognition improved (g = 0.55), and MDD showed a smaller depression effect than the schizophrenia symptom estimate (g = −0.34). Bipolar disorder and autism stayed directional but nonsignificant, and the paper’s …
A 1.6M-participant meta-analysis shows a clear gradient: parental schizophrenia hits offspring cognition harder than bipolar, which hits harder than MDD.
Trauma reminders trigger substance craving — but the path runs through negative emotions, not directly. A 2026 meta-analysis quantifies the link.
Loneliness raises measured risk of Alzheimer’s, suicidal ideation, and completed suicide. The associations are documented; the precise magnitudes are not.