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pierredv : side-effects   9

(14) (PDF) Unwanted effects: Is there a negative side of meditation? A multicentre survey
Objectives Despite the long-term use and evidence-based efficacy of meditation and mindfulness-based interventions, there is still a lack of data about the possible unwanted effects (UEs) of these practices. The aim of this study was to evaluate the occurrence of UEs among meditation practitioners, considering moderating factors such as the type, frequency, and lifetime duration of the meditation practices. Methods An online survey was developed and disseminated through several websites, such as Spanish-, English- and Portuguese-language scientific research portals related to mindfulness and meditation. After excluding people who did not answer the survey correctly or completely and those who had less than two months of meditation experience, a total of 342 people participated in the study. However, only 87 reported information about UEs. Results The majority of the practitioners were women from Spain who were married and had a University education level. Practices were more frequently informal, performed on a daily basis, and followed by focused attention (FA). Among the participants, 25.4% reported UEs, showing that severity varies considerably. The information requested indicated that most of the UEs were transitory and did not lead to discontinuing meditation practice or the need for medical assistance. They were more frequently reported in relation to individual practice, during focused attention meditation, and when practising for more than 20 minutes and alone. The practice of body awareness was associated with UEs to a lesser extent, whereas focused attention was associated more with UEs. Conclusions This is the first large-scale, multi-cultural study on the UEs of meditation. Despite its limitations, this study suggests that UEs are prevalent and transitory and should be further studied. We recommend the use of standardized questionnaires to assess the UEs of meditation practices.
meditation  side-effects 
9 weeks ago by pierredv
What does meditation help? The benefits and surprising drawbacks of the art of meditation — Quartz
via John Helm

"To conduct their research, the pair interviewed 60 Western Buddhist meditation practitioners who had all experienced challenging issues during their practice. They included both rookies and meditation teachers, ... All belonged to either Theravāda, Zen, or Tibetan traditions.
The researchers identified 59 kinds of unexpected or unwanted experiences, which they classified into seven domains: cognitive, perceptual, affective (related to moods), somatic, conative (related to motivation), sense of self, and social. Among the experiences described to them were feelings of anxiety and fear, involuntary twitching, insomnia, a sense of complete detachment from one’s emotions, hypersensitivity to light or sound, distortion in time and space, nausea, hallucinations, irritability, and the re-experiencing of past traumas. The associated levels of distress and impairment ranged from “mild and transient to severe and lasting,” according to the study."
Quartz  meditation  side-effects 
may 2017 by pierredv
Cholesterol wars: Does a pill a day keep heart attacks away? | New Scientist issue 3112, Feb 2017
"For a start, heart attacks may have halved in the JUPITER trial, but the absolute incidence of heart attacks in the study population was low anyway. Only 99 people had a fatal heart attack during the trial period, 31 of whom were taking the statin. Viewed that way, less than 0.5 per cent of the people treated with rosuvastatin benefited, casting a different light on the drug’s effectiveness.

Similar caveats arise in other analyses. As highlighted in a 2014 editorial in the Annals of Internal Medicine, for example, two meta-analyses of studies from 2012 and 2013 managed to come to opposite conclusions about statins’ effectiveness, despite the mortality levels they found differing by less than half a per cent."

"An alternative measure of a drug’s efficacy is “number needed to treat” (NNT), the number of people that have to be given a therapy for a specified time for one to benefit"

"Muscle pain, or myalgia, is the most commonly cited side-effect of statins. "

"Last year, modelling of available data by Judith Finegold at Imperial College London showed that a 50-year-old, non-smoking man without diabetes and with average cholesterol and blood pressure will increase his life expectancy by seven months on average after starting preventative statin therapy. But that average is highly misleading, Finegold says: it disguises the fact that 7 of that 100 will gain an average of 99 months (8.25 years) of life – while the remaining 93 get nothing at all."
ASCVD  heart  health  cholesterol  statins  NewScientist  NNT  statistics  myalgia  side-effects 
may 2017 by pierredv
Can meditation have negative side effects? - ResearchGate
Good list of studies from Zana Marovic Kutz et al. (1985a,b) Craven, 1989 Shapiro (1992)
ResearchGate  meditation  side-effects 
july 2015 by pierredv
Panic, depression and stress: The case against meditation - opinion - 14 May 2015 - Control - New Scientist
By Miguel Farias & Catherine Wikholm, authors of "The Buddha Pill: Can meditation change you?" - "David Shapiro of the University of California, Irvine, found that 7 per cent of people on meditation retreats experienced profoundly adverse effects, including panic and depression. Experience appears to make no difference – experts and naive meditators are equally likely to be affected" - "As we scrutinised evidence on the effects of meditation and mindfulness for our book The Buddha Pill: Can meditation change you?, we realised that media reports were heavily biased: findings of moderate positive effects were inflated, whereas non-significant and negative findings went unreported." - "Not everyone has bought into this mantra of positivity. Historians and religious-studies scholars have identified a relationship between meditation and violence." Examples: Torkel Brekke, Brian Victoria
NewScientist  meditation  side-effects  psychology  books 
july 2015 by pierredv
The Dark Knight of the Soul - Tomas Rocha - The Atlantic June 2014
Strap line: "For some, meditation has become more curse than cure. Willoughby Britton wants to know why."
meditation  side-effects  trauma 
june 2014 by pierredv

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