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Effect of omega-3 fatty acids on offending behavior in repeat violent offenders : A Randomised Controlled Trial feasibility study

Effect of omega-3 fatty acids on offending behavior in repeat violent offenders: A Randomised Controlled Trial feasibility study

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12616000220460
Enrollment
44
Registered
2016-02-18
Start date
2015-02-25
Completion date
2015-09-30
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

1.To demonstrate the feasibility of conducting a RCT using omega-3 supplementation with a community sample of impulsive, repeat-violent offenders. Secondary objectives 1.To collect information about the effectiveness of omega-3 supplementation on 3-month behavioural measures of impulsivity, anger, depression and irritability in impulsive, repeat-violent offenders. 2.To collect information about the effectiveness of omega-3 supplementation in reducing self-reported offending among impulsive, repeat-violent offenders.

Interventions

This pilot study will utilise a double-blind, randomised, placebo-controlled trial of omega-3 supplementation in 50 men who have been convicted of violent crimes in NSW. Upon entry into the study, participants will be randomised into either the treatment (n=25) or placebo (n=25) arm of the study. Treatment Participants enrolled in the study will take 5 x 1gm capsules orally per day for three months. Those receiving the active treatment will receive 5 x 1g fish oil capsules, containing a tota

This pilot study will utilise a double-blind, randomised, placebo-controlled trial of omega-3 supplementation in 50 men who have been convicted of violent crimes in NSW. Upon entry into the study, participants will be randomised into either the treatment (n=25) or placebo (n=25) arm of the study. Treatment Participants enrolled in the study will take 5 x 1gm capsules orally per day for three months. Those receiving the active treatment will receive 5 x 1g fish oil capsules, containing a total of 3000mg LC-omega-3 FA (2000mg EPA, 1000mg DHA) taken once daily for 3 months. Adherence will be assessed using both direct questioning by the research assistant, pill counting, and erythrocyte omega-3 content based on blood omega-3 levels. Participants will be required to return empty medication packs at the follow-up assessments (6 and 12 weeks) and asked to provide a blood sample at baseline and 12 weeks for measurement of omega-3 content in erythrocyte membrane phospholipids. Participants will also be asked during the follow-up phone calls how many days they have missed taking their capsules. Participants will also be asked to return the capsules at each face-to-face meeting with the research assistant, the remaining number of capsules will then be counted.

Sponsors

Hunter New England Mental Health Neuropsychiatry Service
Lead SponsorGovernment body

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Blinded (masking used) (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
Male
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

*Male *Aged 18 years and over *Prior conviction for at least two violent offences (e.g. manslaughter, robbery, assault) *Minimum score of 70 on the Barratt Impulsivity Scale *Medically fit *Able to provide informed consent *Fluent in English *Willing to provide a sample of blood at the beginning and end of the study *For the purposes of this study, violent crime is defined as per the Australian Standard Offence Classification and includes the following five categories: homicide (including manslaughter); acts intended to cause injury; dangerous and negligent acts endangering persons; abduction, harassment and other offences against the person; and robbery, extortion and related offences

Exclusion criteria

*Allergy to seafood or iodine *Current use of anti-coagulants and blood thinners *Current use of systemic antibiotics or anti-inflammatories *Unstable use of medication to modify mood, behaviour or serotonin levels *Unwilling to provide a sample of blood at the beginning and end of the study *Severe mental illness (schizophrenia, bipolar disorder, major depression) *Considered to be at high risk of suicide *Significant renal or hepatic impairment *Anticipation of receiving a custodial sentence *Impending deportation, moving interstate or to a remote area. *Conviction for murder or child sex offences

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026