Thread by @meehawl

"Compared with an eight-person control group, the subjects who meditated for more than thirty minutes per day experienced shallower sleep and woke up more often during the night. The more participants reported meditating, the worse their sleep became."

harpers.org/archive/2021/0…

https://twitter.com/Harpers/status/1377686448925720582

"Mindfulness training had an arousing effect on PSG sleep profiles ... there was a significant positive correlation between the amount of MM practice and increases in arousals/awakenings and stage 1, and decreases in SWS."

brown.edu/research/labs/…

"#Meditation practitioners met an average of 4 causality criteria (mean=4.2 ±1.1 range=2–6;), with more than half (60%) meeting 4, 5, or all 6 criteria, well-exceeding the minimum cutoff of 2 that standard guidelines use to warrant further investigation."

journals.plos.org/plosone/articl…

"The most common AEs were anxiety (33%, 18), depression (27%, 15) and cognitive anomalies (25%, 14); gastrointestinal problems and suicidal behaviours (both 11%, 6) were the least frequent."

onlinelibrary.wiley.com/doi/full/10.11…

"Higher levels of repetitive negative thinking, those who only engaged in deconstructive types of meditation (eg, #vipassana/insight meditation), & those who had attended a meditation retreat @ any point—were more likely to report unpleasant" experiences.

journals.plos.org/plosone/articl…