Comment Period Extended to 3/23/2015 for Notice of Proposed Rulemaking (NPRM) for FDAAA 801 and NIH Draft Reporting Policy for NIH-Funded Trials

Docosahexaenoic Acid (DHA) Effects on Cognitive Function, Craving and Psychosocial Factors in Heavy Cigarette Smokers

This study has been completed.
Information provided by (Responsible Party):
Hillel Yaffe Medical Center Identifier:
First received: January 18, 2011
Last updated: December 18, 2013
Last verified: December 2013

The purpose of this study is to assess effects of Docosahexaenoic Acid (DHA) as an add-on novel supplement on quality of life, cognitive function, craving and psychosocial factors in heavy cigarette smokers. In humans, no previous randomized, double blind controlled study has been conducted to evaluate these effects. The aim of the study is to 1. Test Docosahexaenoic Acid (DHA) beneficial effects on objective clinical indicators of cognitive function (choice reaction time, decision making, impulsivity, facial recognition) in smokers 2. Improvement of quality of life, cigarette craving, psychosocial factors and self-perceptions in smokers treated with DHA supplement

Condition Intervention
Dietary Supplement: DHA
Dietary Supplement: Oral ingestion of 5 placebo tablets

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Supportive Care

Further study details as provided by Hillel Yaffe Medical Center:

Primary Outcome Measures:
  • Reduction in smoking urges and craving [ Time Frame: One and a half years ] [ Designated as safety issue: No ]
    Reduction in smoking urges and craving to be measured by the following: smoking urges and craving scales; choice reaction time, impulsivity computerized test, quality of life questionnaire, depression inventory, general health questionnaire, scale of perceived social support, facial expression task, self-esteem diary

Enrollment: 51
Study Start Date: November 2011
Study Completion Date: September 2013
Primary Completion Date: July 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: I. DHA
Oral ingestion 5 tablets DHA + EPA (daily ingestion DHA 2040 mg and EPA 2710 mg)- (Omega 3 - 950,the Solgar Pharmaceutical Co., Israel).
Dietary Supplement: DHA
DHA ingested orally by heavy smokers
Placebo Comparator: II. Placebo
Oral ingestion of 5 tablets containing the following: gelatin,glycerine,water and soy oil made by the Solgar Pharmaceutical Co., Israel
Dietary Supplement: Oral ingestion of 5 placebo tablets
Oral ingestion of 5 tablets containing the following: gelatin,glycerine,water and soy oil made by the Solgar Pharmaceutical Co., Israel


Ages Eligible for Study:   18 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Nicotine dependence
  • Smoked at least 10 cigarettes per day for the past 12 months and not interested in quitting

Exclusion Criteria:

  • Serious kidney, lun, neurological and cardiovascular diseases
  • Suicide risk, acute psychosis, severe depression, organic brain syndromes
  • Dependence on psychoactive substances other than nicotine
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01284660

Bar Ilan University
Ramat Gan, Israel, 52900
Sponsors and Collaborators
Hillel Yaffe Medical Center
  More Information

No publications provided

Responsible Party: Hillel Yaffe Medical Center Identifier: NCT01284660     History of Changes
Other Study ID Numbers: 00009-11 HYMC
Study First Received: January 18, 2011
Last Updated: December 18, 2013
Health Authority: Israel: Ministry of Health processed this record on February 27, 2015