Natasha Files’s research while affiliated with University of British Columbia and other places

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Publications (10)


"Getting to the Root": Ayahuasca Ceremony Leaders' Perspectives on Eating Disorders
  • Article

September 2022

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218 Reads

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6 Citations

Journal of Psychoactive Drugs

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Annie Kingston Miller

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Anja Loizaga-Velder

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[...]

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Given the mortality, chronicity, and treatment drop-out rates observed among individuals with eating disorders (EDs), innovative approaches are needed. Ayahuasca, a psychedelic plant medicine from the Amazon, is currently being investigated. This study expands on prior exploratory research by describing the perspectives of ayahuasca ceremony leaders regarding their conceptualizations of EDs and the potential therapeutic mechanisms of action of ayahuasca for individuals with EDs. Qualitative content analysis of interviews with 15 ayahuasca ceremony leaders produced two main categories, with relevant subcategories. The first category encompassed the leaders' theories of EDs from a shamanic perspective, including that EDs are symptomatic of an underlying concern, serve a function and affect health in multiple domains. The second category described leaders' perspectives on the potential mechanisms of action of ayahuasca for EDs, including that ayahuasca facilitates "energetic healing"; helps identify, process, and integrate the "root" of the ED; promotes holistic healing; and enhances and/or reorganizes relationships. From the perspectives of ceremony leaders and consistent with previous exploratory research, ceremonial ayahuasca use may offer a potentially useful, novel and complementary intervention for EDs.


Caring for a child with an eating disorder: Understanding differences among mothers and fathers of adolescent and adult children

June 2022

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87 Reads

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12 Citations

European Eating Disorders Review

Objective: This study investigated treatment-engagement fears, self-efficacy, and accommodating and enabling in mothers and fathers of adolescent and adult children with eating disorders. Methods: This study involved a secondary analysis of pre-treatment data from a subsample of 143 parents (95 mothers; 48 fathers) from a Canada-wide multi-site study. Parents completed the Caregiver Traps Scale, Parents Versus Anorexia Scale, and the Accommodation and Enabling Scale for Eating Disorders. Data were analysed using factorial Multivariate Analysis of Variance and mediation via multiple regression. Results: Mothers reported higher levels of treatment-engagement fears than fathers. Among mothers, higher fear predicted lower self-efficacy and more accommodating and enabling behaviours. Among fathers, neither fear nor self-efficacy predicted accommodating and enabling. No differences in treatment-engagement fear or self-efficacy between parents of adolescent child and adult children were found at pre-treatment. Conclusions: Mothers' and fathers' experience different levels of fear related to their involvement in their ill-child's treatment at pre-treatment, and that fear is uniquely related to variables that impact treatment outcomes. There is a need to support parents even when their child is an adult. This study can inform family-based treatments vis-a-vis tailoring interventions for mothers and fathers and providing support to parents of children with eating disorders across the lifespan.


Ayahuasca as a Healing Tool Along the Continuum of Recovery from Eating Disorders

April 2021

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102 Reads

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4 Citations

Eating disorders (EDs) are associated with a wide array of comorbid psychological symptoms and conditions. They can have a serious impact on quality of life, as well as contributing to high morbidity and premature mortality. EDs are also among the most challenging mental disorders to treat, and long-term outcome studies show high rates of relapse. For these reasons, new treatments must be explored. This chapter will explore the potential for ayahuasca as a healing tool for EDs via qualitative study of the experiences of participants with both a history of an ED and ceremonial ayahuasca use in various contexts. Positive outcomes will be presented through a biopsychosocial-spiritual lens, as will data from a subset of participants who also engaged in conventional ED treatment in North America. Perceived risks associated with ayahuasca-assisted therapy and recommendations for the integration of ayahuasca in a Western context will also be presented.


An exploratory study of experiences with conventional eating disorder treatment and ceremonial ayahuasca for the healing of eating disorders
  • Article
  • Publisher preview available

April 2020

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696 Reads

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68 Citations

Eating and weight disorders: EWD

Purpose Ayahuasca is a traditional Amazonian medicine that is currently being researched for its potential in treating a variety of mental disorders. This article reports on exploratory qualitative research relating to participant experiences with ceremonial ayahuasca drinking and conventional treatment for eating disorders (EDs). It also explores the potential for ayahuasca as an adjunctive ED treatment. Methods Thirteen individuals previously diagnosed with an ED participated in a semi-structured interview contrasting their experiences with conventional ED treatment with experiences from ceremonial ayahuasca. The interviews were analyzed using thematic analysis. Results Participant reports were organized with key themes including that ayahuasca: led to rapid reductions in ED thoughts and symptoms; allowed for the healing of the perceived root of the ED; helped to process painful feelings and memories; supported the internalization of greater self-love and self-acceptance; and catalyzed spiritual elements of healing. Conclusions The results suggest that ayahuasca may have potential as a valuable therapeutic tool, and further research—including carefully controlled clinical trials—is warranted. Level of evidence Level V, qualitative descriptive study.

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Table 1 . Sample demographics and history of clinical characteristics. 
Nourishing the Spirit: Exploratory Research on Ayahuasca Experiences along the Continuum of Recovery from Eating Disorders

September 2017

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2,109 Reads

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92 Citations

Journal of Psychoactive Drugs

Eating disorders (EDs) are serious health conditions that are among the most difficult to treat. Innovative treatments are needed and modalities from across cultures must be considered. Ayahuasca is a psychoactive plant-based tea originally used by Amazonian indigenous groups. A growing body of research points to its promise in the healing of various mental health issues. This study explored the potential therapeutic value of ayahuasca in the context of EDs, including the perceived impact of the preparatory diet and the ayahuasca purge. Sixteen individuals previously diagnosed with an ED participated in a semi-structured interview relating to their experiences with ceremonial ayahuasca drinking. Interviews were analyzed using thematic analysis. Themes presented relate to the reduction or cessation of ED and mental health symptoms, shifts in body perception, and the importance of a ceremonial setting and after-care. For some, the preparatory diet resulted in familiar patterns of concern; however, none felt triggered by the purge in ayahuasca. Ceremonial ayahuasca drinking shows promise in the healing of EDs and warrants further research.


Figure 1. Proposed mediation model. 
Figure 2. Path analysis using structural equation modeling (bootstrapping, 2000 samples, 95% confidence). Model fit was excellent. † p < .08; * p < .05; ** p < .01; *** p < .001. 
Increasing parental self-efficacy with emotion-focused family therapy for eating disorders: a process model

May 2017

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2,704 Reads

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44 Citations

Person-Centered and Experiential Psychotherapies

A process model was tested whereby parental fear and self-blame were targeted in order to enhance parental self-efficacy and supportive efforts in the context of emotion-focused family therapy (EFFT) for eating disorders (ED). A 2-day EFFT group intervention was delivered to parents of adolescent and adult children with ED. Data were collected from eight treatment sites (N = 124). Data were analyzed using t-tests, regression analyses and structural equation modeling. The findings supported the proposed process model. Through the processing of parents’ maladaptive fear and self-blame, parents felt more empowered to support their child’s recovery. This increase in self-efficacy led to an increase in parents’ intentions to engage in recovery-focused behaviors. This study is the first to test a method for clinicians to increase supportive efforts by targeting and enhancing caregiver self-efficacy via the processing of emotion.


The influence of carer fear and self-blame when supporting a loved one with an eating disorder

January 2016

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951 Reads

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46 Citations

Eating Disorders

Carers often feel disempowered and engage in behaviours that inadvertently enable their loved one's ED symptoms and yet little is known regarding these processes. This study examined the relationships among fear, self-blame, self-efficacy, and accommodating and enabling behaviours in 137 carers of adolescents and adults with ED. The results revealed that fear and self-blame predicted low carer self-efficacy in supporting their loved one's recovery as well as the extent to which carers reported engaging in recovery-interfering behaviours. The relevance of these findings are discussed in the context of family-oriented ED therapies and highlight the importance for clinicians to attend to and help to process strong emotions in carers, in order to improve their supportive efforts and, ultimately, ED outcomes.

Citations (8)


... The substance's results vary according to the dosage, and the duration of the experience might range from 2 to 6 hours (Gonzalez et al., 2021). People who use ayahuasca may encounter symptoms such as emesis, diarrhea, sensations of intense happiness, vivid visual and aural hallucinations, transformative psychedelic effects, apprehension, and paranoia (Williams et al., 2023). ...

Reference:

Ayahuasca (Banisteriopsis caapi (Spruce ex Griseb.) Morton Malpighiaceae)
"Getting to the Root": Ayahuasca Ceremony Leaders' Perspectives on Eating Disorders
  • Citing Article
  • September 2022

Journal of Psychoactive Drugs

... Parents of adult children with EDs face unique challenges, including grief, chronic stress and balancing caregiving with aging responsibilities [6,22]. Unlike parents of younger children, those caring for adults often report feeling marginalised and excluded by the treatment process [19][20][21][22]. ...

Caring for a child with an eating disorder: Understanding differences among mothers and fathers of adolescent and adult children
  • Citing Article
  • June 2022

European Eating Disorders Review

... In relation to Western conceptualizations of mental health conditions specifically, there seem to be certain psychedelics that offer better therapeutic outcomes than other psychedelics for specific diagnoses. For instance, quick and lasting reductions in symptoms have been seen for treatment-resistant depression, with the use of psilocybin (Carhart-Harris et al., 2017); for alcohol use disorder, with the use of LSD (Fuentes et al., 2020); and for eating disorders, with the use of ceremonial ayahuasca journeys (Lafrance et al., 2021). A study examining intra-and interpersonal change in autistic adults undergoing MDMA-assisted therapy has found rapid and lasting improvement in social anxiety symptoms, with social anxiety diagnoses ranging from marked to very severe (Danforth et al., 2018). ...

Ayahuasca as a Healing Tool Along the Continuum of Recovery from Eating Disorders
  • Citing Chapter
  • April 2021

... Some leaders expressed the belief that ED behaviors are fundamentally "an attempt to heal," which aligns with research on individuals with EDs with trauma histories characterizing "[ED] symptoms . . . as a rational response to unmetabolized traumatic experiences" (Schwartz and Gay 1993, 65), as well with the theoretical construct of transformance wherein ED behaviors are postulated to emerge from strivings associated with an innate, wired-in drive toward healing, integration, and wholeness (Fosha 2008;Williams and Files 2018). ...

Emotion-Based Psychotherapies in the Treatment of Eating Disorders: Theory, Research, Prevention, and Treatment
  • Citing Chapter
  • July 2018

... Qualitative data assessment in psychedelic research is usually conducted through (semi-)structured interviews. Several studies reported results of such interviews with patients who suffered from various conditions that were being treated with psychedelic substances, such as treatment-resistant depression (Watts et al. 2017), substance use disorders (Nielson et al. 2018;Noorani et al. 2018;Talin and Sanabria 2017;Loizaga-Velder and Verres 2014), distress in the context of life-threatening diseases Swift et al. 2017;Gasser et al. 2015), and eating disorders (Lafrance et al. 2017;Renelli et al. 2020). ...

An exploratory study of experiences with conventional eating disorder treatment and ceremonial ayahuasca for the healing of eating disorders

Eating and weight disorders: EWD

... Qualitative data assessment in psychedelic research is usually conducted through (semi-)structured interviews. Several studies reported results of such interviews with patients who suffered from various conditions that were being treated with psychedelic substances, such as treatment-resistant depression (Watts et al. 2017), substance use disorders (Nielson et al. 2018;Noorani et al. 2018;Talin and Sanabria 2017;Loizaga-Velder and Verres 2014), distress in the context of life-threatening diseases Swift et al. 2017;Gasser et al. 2015), and eating disorders (Lafrance et al. 2017;Renelli et al. 2020). ...

Nourishing the Spirit: Exploratory Research on Ayahuasca Experiences along the Continuum of Recovery from Eating Disorders

Journal of Psychoactive Drugs

... Cognitive empowerment is achieved by increasing parents' knowledge and awareness of NSSI through psychoeducational modules that deliver evidence-based information about common triggers and underlying psychological mechanisms (Ashcraft et al., 2019;Sophie et al., 2018;Sun et al., 2014;Wang et al., 2022). Emotional empowerment focuses on self-efficacy, resilience, and confidence, which are shaped by parental attitudes toward themselves and their child (Ashcraft et al., 2019;Strahan et al., 2017;Vuorenmaa et al., 2016). To foster positive attitudinal change, the intervention incorporates self-compassion techniques, enabling parents to challenge maladaptive beliefs, reduce self-blame, and adopt more supportive perspectives (Lathren et al., 2020;Sirois et al., 2019). ...

Increasing parental self-efficacy with emotion-focused family therapy for eating disorders: a process model

Person-Centered and Experiential Psychotherapies