Status:
COMPLETED
Effects of Vitamin B12 on the Body's Internal Clock
Lead Sponsor:
Brigham and Women's Hospital
Collaborating Sponsors:
National Center for Complementary and Integrative Health (NCCIH)
Conditions:
Sleep Disorders, Circadian Rhythm
Eligibility:
All Genders
18-30 years
Phase:
NA
Brief Summary
Circadian rhythms are 24-hour cycles that influence natural functions in the body such as heart rate, blood pressure, and body temperature. Circadian rhythms provide the body with an internal clock an...
Detailed Description
Individuals with circadian rhythm sleep disorder suffer from recurrent patterns of disrupted sleep that can significantly affect their daily functioning. Evidence suggests that vitamin B12 supplements...
Eligibility Criteria
Inclusion
- Diagnosis of delayed sleep phase syndrome OR self-described as a "night owl"
Exclusion
- History of medical illness
- History of psychiatric illness in participant or his or her family members
- Current medication or vitamin use
- Follow a vegan diet
- Significant visual problem
- Recent travel across time zones
- History of rotating shiftwork
Key Trial Info
Start Date :
April 1 2005
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
January 1 2008
Estimated Enrollment :
10 Patients enrolled
Trial Details
Trial ID
NCT00120484
Start Date
April 1 2005
End Date
January 1 2008
Last Update
January 14 2010
Active Locations (1)
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1
Brigham and Women's Hospital, Harvard Medical School
Boston, Massachusetts, United States, 02115