Back to resultsBeyond Ageing Project: A Study for the Prevention of Depression
Primary Purpose
Depression, Depressive Disorder
Status
Completed
Phase
Phase 2
Locations
Australia
Study Type
Interventional
Intervention
Folate (400mcg) and Vitamin B12 (100 mcg)
mediated physical activity promotion
Mental health literacy
placebo
Nutrition information
pain and arthritis management information
Sponsored by
About this trial
This is an interventional prevention trial for Depression focused on measuring Depression, Cognition, Depressive disorder, Mental health literacy, Older adults, Randomzed controlled trial
Eligibility Criteria
Inclusion Criteria: Aged 65-74 years with some depressive symptoms, assessed using the Kessler 10 Psychological Distress Scale [K10] (Andrews & Slade, 2001) Exclusion Criteria: Any of the following: Those currently taking medication or receiving psychological treatment for depression A report of a medical diagnosis of bipolar disorder/mania History of epilepsy Diagnosed with cancer and/or on antifolate therapy Have a diagnosis of dementia or Alzheimer's disease Are currently taking vitamin supplements containing folate, B2, B6 or B12 at a dose exceeding 25% of the recommended daily intake. Medical contradictions to exercise (e.g., significant orthopaedic problems or cardiovascular disease that would prevent regular aerobic exercise) Ongoing participation in regular aerobic exercise.
Sites / Locations
- Australian National University
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm 5
Arm 6
Arm Type
Experimental
Experimental
Experimental
Placebo Comparator
Active Comparator
Active Comparator
Arm Label
Folic acid (400mcg) + Vitamin B12 (100 mcg)
Mediated physical activity promotion
Mental health literacy
Placebo tablet
Nutrition information
Pain and arthritis management information
Arm Description
The vitamin intervention was a daily oral dose of one tablet consisting of folic acid 400 mcg + vitamin B12 100 mcg. The folic acid dose of 400 mcg / day was selected as it has been shown to be the dose associated with 90% of the maximal decrease in plasma homocysteine concentration for older individuals. Participants received 1 bottle x 200 tablets in six-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months).
Individuals in the Physical Activity Promotion group received a manual designed to promote older individuals' physical activity participation to the level recommended to gain both physical and mental health benefits. The framework of the physical activity manual was informed by social cognitive theory and the transtheoretical model, and comprised five sections that reflect stages of behaviour change, including; precontemplation, contemplation, preparation, action, and maintenance. The manual contained evidence-based strategies and skills to assist people in increasing their physical activity levels. Participants received a pedometer at the commencement of the intervention as pedometry step / minute values are useful as an indicator of moderate to vigorous physical activity with total number of steps for one week recorded during the brief telephone calls at 1-5 weeks, and 4-, 8-, 13-, 18-, and 22- months.
This MHL intervention comprised 10 modules, with nine of these specifically written for older adults. Modules 1 to 5 comprised information on depression and the evidence-based treatment for older adults. The additional MHL modules were booklets addressing evidence-based strategies and treatments for depression. It was delivered in a way to foster support and ensure that participants worked through the material systematically. Modules 1 to 5 were delivered in consecutive weeks as previous research indicates that the maximum impact of MHL on depressive symptoms may occur within the first six weeks of the intervention. Telephone interviewers contacted participants once a week for 5 consecutive weeks to motivate and support participants. There were an additional 5 check-in telephone calls, and Modules 6 to 10 of the MHL material that were delivered via postal mail at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10).
A placebo tablet was the attention control intervention for the folic acid + vitamin B12 intervention group. Participants received 1 bottle x 200 tablets in 6-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months) during which participants counted their left-over tablets.
The attention control intervention for the physical activity intervention was printed nutrition literacy and included information concerning the recommended dietary guidelines for older Australians, as well as strategies and additional information to facilitate beneficial dietary behaviours. The same procedure was adhered to as the physical activity intervention to ensure adequate attention control. Participants in the nutrition promotion intervention received 5 brief telephone calls from an interviewer to facilitate adherence to the intervention, and to offer support and clarification of the materials. Participants received five further brief telephone calls as well as nutrition newsletters that were delivered via postal mail at 4-, 8-, 13-, 18-, and 22- months.
Pain and Arthritis Information was used as the attention control intervention for the MHL intervention and comprised 10 modules. Modules 1 to 5 were contained in an Arthritis Australia consumer guide for arthritis management. Modules 6 to 10 were a series of information pamphlets on pain management, osteoporosis and falls prevention. The delivery of the Pain Information was identical to the MHL intervention with Modules 1 to 5 distributed via postal mail in five consecutive weeks (1-5 weeks), while the remaining intervention modules were delivered at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10). Participants also received 10 brief calls from a telephone interviewer that coincided with receiving the print intervention materials.
Outcomes
Primary Outcome Measures
Depression
The Patient Health Questionnaire - 9 (PHQ - 9) is a brief self-administered diagnostic instrument for depressive symptoms with items derived from the nine diagnostic criteria for Major Depression Disorder using the DSM - IV. The items are coded "0" (not at all) to "3" (nearly every day) for the most recent 2-week period, with possible scores ranging from 0 to 27, higher scores indicating greater depression severity. The PHQ - 9 is used in research and clinical settings, and can be administered via telephone. Studies support its reliability, validity, and ability to detect change over time.
Secondary Outcome Measures
Physical activity level
The International Physical Activity Questionnaire - Short Form (IPAQ - SF) was used as a self-report measure of physical activity. The purpose of the IPAQ is to survey physical activity in large groups or populations. The IPAQ allows for a total of metabolic equivalent (MET) units expended in the most recent seven-day period.
Cognitive impairment
The modified Telephone Interview of Cognitive Status has a max. total score= 39, and comprises 4 domains: orientation; recent memory and delayed recall; attention; and, semantic memory. It has excellent discrimination in cognitive performance in the general population. Processing speed was measured (Brief Test of Adult Cognition-Telephone) with the task to count backwards quickly from 100 by 1's for 30 seconds The Informant Questionnaire on Cognitive Decline in the Elderly was given at 2yr FU to a person who had known the participant for > 2yrs. It measures cognitive decline and dementia.
Physical health outcomes
A health checklist was given to determine current health status with items addressing the following health domains: cardiovascular, pulmonary, musculoskeletal, psychiatric, vision, and renal health; cancer, diabetes, and epilepsy. Blood collections were also used at baseline, 12- and 24 months to further investigate health including: thyroid stimulating hormone; liver and kidney function; fasting cholesterol and blood glucose; C-reactive protein; and haematological parameters.
B12 levels
Serum vitamin B12 was measured using chemiluminscent microparticle assays (Architect i2000, Abbott Laboratories). This allowed a check on whether participants were taking the supplements, and to initially to comply with inclusion/exclusion criteria.
Folate status
Red cell folate was measured using chemiluminscent microparticle assays (Architect i2000, Abbott Laboratories). This allowed a check on whether participants were taking the supplements, and as part of the initial screening process to comply with our inclusion/exclusion criteria.
Homocysteine
A fluorescence polarization immunoassay was used for the quantitative determination of total L-homocysteine in plasma (AxSYM, Abbott Laboratories). This allowed us to establish any changes in Hcy concentration.
Full Information
NCT ID
NCT00214682
First Posted
September 14, 2005
Last Updated
September 12, 2011
Sponsor
Australian National University
Collaborators
Australian Government Department of Health and Ageing, University of Sydney, Commonwealth Scientific and Industrial Research Organisation, Australia
1. Study Identification
Unique Protocol Identification Number
NCT00214682
Brief Title
Beyond Ageing Project: A Study for the Prevention of Depression
Official Title
Beyond Ageing Project: A RCT to Assess the Benefit of Improving Mental Health Literacy as Well as the Effect of Folate and B12, and Physical Activity, in Preventing Major Depression and Cognitive Decline Among Older Australians
Study Type
Interventional
2. Study Status
Record Verification Date
September 2011
Overall Recruitment Status
Completed
Study Start Date
October 2005 (undefined)
Primary Completion Date
January 2011 (Actual)
Study Completion Date
January 2011 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Australian National University
Collaborators
Australian Government Department of Health and Ageing, University of Sydney, Commonwealth Scientific and Industrial Research Organisation, Australia
4. Oversight
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
The purpose of this study is to determine whether folate and vitamin B12, physical activity and mental health literacy can prevent depression, and folate and vitamin B12 and physical activity can prevent cognitive impairment in older people. Also the study aims to assess the benefits for older people in improving their knowledge about mental health in relation to depression.
Detailed Description
While preventive efforts for depression have tended to focus on adolescent and young adult populations, other stages of the lifespan also provide opportunities for prevention. With older people, there are certain risk and aetiological factors, which become more prominent and require preventive action at that point in the lifespan. The aim of this study is to determine the efficacy of various interventions in preventing depression and cognitive decline among older people who are at high risk of developing major depression because they are currently suffering from depressive symptoms.
The study has three interventions; i) folate and vitamin B12, ii) physical activity; and iii) mental health literacy. Participants will be randomly allocated to receive each combination of the interventions (folate and vitamin B12 or placebo, physical activity intervention programme or physical activity no-intervention control, mental health literacy intervention [containing written modules with information about depression that is relevant to older people] or mental health literacy no-intervention control group). Participants will receive these interventions over a two-year period with regular assessments across that time period.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Depression, Depressive Disorder
Keywords
Depression, Cognition, Depressive disorder, Mental health literacy, Older adults, Randomzed controlled trial
7. Study Design
Primary Purpose
Prevention
Study Phase
Phase 2
Interventional Study Model
Factorial Assignment
Masking
ParticipantInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
909 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Folic acid (400mcg) + Vitamin B12 (100 mcg)
Arm Type
Experimental
Arm Description
The vitamin intervention was a daily oral dose of one tablet consisting of folic acid 400 mcg + vitamin B12 100 mcg. The folic acid dose of 400 mcg / day was selected as it has been shown to be the dose associated with 90% of the maximal decrease in plasma homocysteine concentration for older individuals. Participants received 1 bottle x 200 tablets in six-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months).
Arm Title
Mediated physical activity promotion
Arm Type
Experimental
Arm Description
Individuals in the Physical Activity Promotion group received a manual designed to promote older individuals' physical activity participation to the level recommended to gain both physical and mental health benefits. The framework of the physical activity manual was informed by social cognitive theory and the transtheoretical model, and comprised five sections that reflect stages of behaviour change, including; precontemplation, contemplation, preparation, action, and maintenance. The manual contained evidence-based strategies and skills to assist people in increasing their physical activity levels. Participants received a pedometer at the commencement of the intervention as pedometry step / minute values are useful as an indicator of moderate to vigorous physical activity with total number of steps for one week recorded during the brief telephone calls at 1-5 weeks, and 4-, 8-, 13-, 18-, and 22- months.
Arm Title
Mental health literacy
Arm Type
Experimental
Arm Description
This MHL intervention comprised 10 modules, with nine of these specifically written for older adults. Modules 1 to 5 comprised information on depression and the evidence-based treatment for older adults. The additional MHL modules were booklets addressing evidence-based strategies and treatments for depression. It was delivered in a way to foster support and ensure that participants worked through the material systematically. Modules 1 to 5 were delivered in consecutive weeks as previous research indicates that the maximum impact of MHL on depressive symptoms may occur within the first six weeks of the intervention. Telephone interviewers contacted participants once a week for 5 consecutive weeks to motivate and support participants. There were an additional 5 check-in telephone calls, and Modules 6 to 10 of the MHL material that were delivered via postal mail at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10).
Arm Title
Placebo tablet
Arm Type
Placebo Comparator
Arm Description
A placebo tablet was the attention control intervention for the folic acid + vitamin B12 intervention group. Participants received 1 bottle x 200 tablets in 6-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months) during which participants counted their left-over tablets.
Arm Title
Nutrition information
Arm Type
Active Comparator
Arm Description
The attention control intervention for the physical activity intervention was printed nutrition literacy and included information concerning the recommended dietary guidelines for older Australians, as well as strategies and additional information to facilitate beneficial dietary behaviours. The same procedure was adhered to as the physical activity intervention to ensure adequate attention control. Participants in the nutrition promotion intervention received 5 brief telephone calls from an interviewer to facilitate adherence to the intervention, and to offer support and clarification of the materials. Participants received five further brief telephone calls as well as nutrition newsletters that were delivered via postal mail at 4-, 8-, 13-, 18-, and 22- months.
Arm Title
Pain and arthritis management information
Arm Type
Active Comparator
Arm Description
Pain and Arthritis Information was used as the attention control intervention for the MHL intervention and comprised 10 modules. Modules 1 to 5 were contained in an Arthritis Australia consumer guide for arthritis management. Modules 6 to 10 were a series of information pamphlets on pain management, osteoporosis and falls prevention. The delivery of the Pain Information was identical to the MHL intervention with Modules 1 to 5 distributed via postal mail in five consecutive weeks (1-5 weeks), while the remaining intervention modules were delivered at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10). Participants also received 10 brief calls from a telephone interviewer that coincided with receiving the print intervention materials.
Intervention Type
Drug
Intervention Name(s)
Folate (400mcg) and Vitamin B12 (100 mcg)
Intervention Description
The vitamin intervention was a daily oral dose of one tablet consisting of folic acid 400 mcg + vitamin B12 100 mcg. The folic acid dose of 400 mcg / day was selected as it has been shown to be the dose associated with 90% of the maximal decrease in plasma homocysteine concentration for older individuals. Participants received 1 bottle x 200 tablets in six-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months).
Intervention Type
Behavioral
Intervention Name(s)
mediated physical activity promotion
Intervention Description
Individuals in the Physical Activity Promotion group received a manual designed to promote older individuals' physical activity participation to the level recommended to gain both physical and mental health benefits. The framework of the physical activity manual was informed by social cognitive theory and the transtheoretical model, and comprised five sections that reflect stages of behaviour change, including; precontemplation, contemplation, preparation, action, and maintenance. The manual contained evidence-based strategies and skills to assist people in increasing their physical activity levels. Participants received a pedometer at the commencement of the intervention as pedometry step / minute values are useful as an indicator of moderate to vigorous physical activity with total number of steps for one week recorded during the brief telephone calls at 1-5 weeks, and 4-, 8-, 13-, 18-, and 22- months.
Intervention Type
Behavioral
Intervention Name(s)
Mental health literacy
Intervention Description
Comprises 10 modules, with nine of these specifically written for older adults. Modules 1 to 5 comprised information on depression and the evidence-based treatment for older adults. The additional MHL modules were booklets addressing evidence-based strategies and treatments for depression. It was delivered in a way to foster support and ensure that participants worked through the material systematically. Modules 1 to 5 were delivered in consecutive weeks as previous research indicates that the maximum impact of MHL on depressive symptoms may occur within the first six weeks of the intervention. Telephone interviewers contacted participants once a week for 5 consecutive weeks to motivate and support participants. There were an additional 5 check-in telephone calls, and Modules 6 to 10 of the MHL material that were delivered via postal mail at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10).
Intervention Type
Drug
Intervention Name(s)
placebo
Other Intervention Name(s)
placebo tablet
Intervention Description
A placebo tablet was the attention control intervention for the folic acid + vitamin B12 intervention group. Participants received 1 bottle x 200 tablets in 6-month supplies at baseline, 6 months, 12 months, and 18 months. Adherence was monitored by telephone interviews (6 weeks, 6-, 12-, and 24 months) and 10 brief telephone tracking calls (1 - 5 weeks, and 4-, 8-, 13-, 18-, and 22-months) during which participants counted their left-over tablets.
Intervention Type
Behavioral
Intervention Name(s)
Nutrition information
Intervention Description
The attention control intervention for the physical activity intervention was printed nutrition literacy and included information concerning the recommended dietary guidelines for older Australians, as well as strategies and additional information to facilitate beneficial dietary behaviours. The same procedure was adhered to as the physical activity intervention to ensure adequate attention control. Participants in the nutrition promotion intervention received 5 brief telephone calls from an interviewer to facilitate adherence to the intervention, and to offer support and clarification of the materials. Participants received five further brief telephone calls as well as nutrition newsletters that were delivered via postal mail at 4-, 8-, 13-, 18-, and 22- months.
Intervention Type
Behavioral
Intervention Name(s)
pain and arthritis management information
Intervention Description
Pain and Arthritis Information was used as the attention control intervention for the MHL intervention and comprised 10 modules. Modules 1 to 5 were contained in an Arthritis Australia consumer guide for arthritis management. Modules 6 to 10 were a series of information pamphlets on pain management, osteoporosis and falls prevention. The delivery of the Pain Information was identical to the MHL intervention with Modules 1 to 5 distributed via postal mail in five consecutive weeks (1-5 weeks), while the remaining intervention modules were delivered at 4- (Module 6), 8- (Module 7), 13- (Module 8), 18- (Module 9), and 22- months (Module 10). Participants also received 10 brief calls from a telephone interviewer that coincided with receiving the print intervention materials.
Primary Outcome Measure Information:
Title
Depression
Description
The Patient Health Questionnaire - 9 (PHQ - 9) is a brief self-administered diagnostic instrument for depressive symptoms with items derived from the nine diagnostic criteria for Major Depression Disorder using the DSM - IV. The items are coded "0" (not at all) to "3" (nearly every day) for the most recent 2-week period, with possible scores ranging from 0 to 27, higher scores indicating greater depression severity. The PHQ - 9 is used in research and clinical settings, and can be administered via telephone. Studies support its reliability, validity, and ability to detect change over time.
Time Frame
Baseline, 6 weeks, 6-, 12-, 48-, and 51 month followups.
Secondary Outcome Measure Information:
Title
Physical activity level
Description
The International Physical Activity Questionnaire - Short Form (IPAQ - SF) was used as a self-report measure of physical activity. The purpose of the IPAQ is to survey physical activity in large groups or populations. The IPAQ allows for a total of metabolic equivalent (MET) units expended in the most recent seven-day period.
Time Frame
Baseline, 6 weeks, 6-, 12-, 48-, and 51 month followups.
Title
Cognitive impairment
Description
The modified Telephone Interview of Cognitive Status has a max. total score= 39, and comprises 4 domains: orientation; recent memory and delayed recall; attention; and, semantic memory. It has excellent discrimination in cognitive performance in the general population. Processing speed was measured (Brief Test of Adult Cognition-Telephone) with the task to count backwards quickly from 100 by 1's for 30 seconds The Informant Questionnaire on Cognitive Decline in the Elderly was given at 2yr FU to a person who had known the participant for > 2yrs. It measures cognitive decline and dementia.
Time Frame
Baseline, 12-, and 48-month followups.
Title
Physical health outcomes
Description
A health checklist was given to determine current health status with items addressing the following health domains: cardiovascular, pulmonary, musculoskeletal, psychiatric, vision, and renal health; cancer, diabetes, and epilepsy. Blood collections were also used at baseline, 12- and 24 months to further investigate health including: thyroid stimulating hormone; liver and kidney function; fasting cholesterol and blood glucose; C-reactive protein; and haematological parameters.
Time Frame
Baseline, 6-week, 6-, 12-, 24-, and 48-month followups.
Title
B12 levels
Description
Serum vitamin B12 was measured using chemiluminscent microparticle assays (Architect i2000, Abbott Laboratories). This allowed a check on whether participants were taking the supplements, and to initially to comply with inclusion/exclusion criteria.
Time Frame
Baseline, 12-, and 48-month followups.
Title
Folate status
Description
Red cell folate was measured using chemiluminscent microparticle assays (Architect i2000, Abbott Laboratories). This allowed a check on whether participants were taking the supplements, and as part of the initial screening process to comply with our inclusion/exclusion criteria.
Time Frame
Baseline, 12-, and 48-month followups.
Title
Homocysteine
Description
A fluorescence polarization immunoassay was used for the quantitative determination of total L-homocysteine in plasma (AxSYM, Abbott Laboratories). This allowed us to establish any changes in Hcy concentration.
Time Frame
Baseline, 12- and 24-month followups.
10. Eligibility
Sex
All
Minimum Age & Unit of Time
65 Years
Maximum Age & Unit of Time
74 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Aged 65-74 years with some depressive symptoms, assessed using the Kessler 10 Psychological Distress Scale [K10] (Andrews & Slade, 2001)
Exclusion Criteria:
Any of the following:
Those currently taking medication or receiving psychological treatment for depression
A report of a medical diagnosis of bipolar disorder/mania
History of epilepsy
Diagnosed with cancer and/or on antifolate therapy
Have a diagnosis of dementia or Alzheimer's disease
Are currently taking vitamin supplements containing folate, B2, B6 or B12 at a dose exceeding 25% of the recommended daily intake.
Medical contradictions to exercise (e.g., significant orthopaedic problems or cardiovascular disease that would prevent regular aerobic exercise)
Ongoing participation in regular aerobic exercise.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Professor Helen Christensen, PhD
Organizational Affiliation
Centre for Mental Health Research, ANU
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Professor Anthony F Jorm, PhD
Organizational Affiliation
ORYGEN Research Centre, University of Melbourne
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Professor Ian Hickie, PhD
Organizational Affiliation
Brain and Mind Research Institute, University of Sydney
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Dr Janine G Walker, PhD
Organizational Affiliation
Centre for Mental Health Research, Australian National University, Canberra, Australia
Official's Role
Principal Investigator
Facility Information:
Facility Name
Australian National University
City
Canberra
State/Province
Australian Capital Territory
ZIP/Postal Code
0200
Country
Australia
12. IPD Sharing Statement
Citations:
PubMed Identifier
22170358
Citation
Walker JG, Batterham PJ, Mackinnon AJ, Jorm AF, Hickie I, Fenech M, Kljakovic M, Crisp D, Christensen H. Oral folic acid and vitamin B-12 supplementation to prevent cognitive decline in community-dwelling older adults with depressive symptoms--the Beyond Ageing Project: a randomized controlled trial. Am J Clin Nutr. 2012 Jan;95(1):194-203. doi: 10.3945/ajcn.110.007799. Epub 2011 Dec 14. Erratum In: Am J Clin Nutr. 2012 Aug;96(2):448. Dosage error in article text.
Results Reference
derived
PubMed Identifier
20805005
Citation
Christensen H, Aiken A, Batterham PJ, Walker J, Mackinnon AJ, Fenech M, Hickie IB. No clear potentiation of antidepressant medication effects by folic acid+vitamin B12 in a large community sample. J Affect Disord. 2011 Apr;130(1-2):37-45. doi: 10.1016/j.jad.2010.07.029.
Results Reference
derived
PubMed Identifier
20592433
Citation
Walker JG, Mackinnon AJ, Batterham P, Jorm AF, Hickie I, McCarthy A, Fenech M, Christensen H. Mental health literacy, folic acid and vitamin B12, and physical activity for the prevention of depression in older adults: randomised controlled trial. Br J Psychiatry. 2010 Jul;197(1):45-54. doi: 10.1192/bjp.bp.109.075291.
Results Reference
derived
Learn more about this trial
Beyond Ageing Project: A Study for the Prevention of Depression
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