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Melatonin's timekeeping function is undoubtedly related to the fact that it is primarily produced during nighttime darkness; that is, melatonin and light occur at opposite times. The human phase response curve (PRC) to melatonin appears to be about 12h out of phase with the PRC to light. These striking complementarities, together with light's acute(More)
BACKGROUND According to the phase-shift hypothesis for winter depression, morning light (which causes a circadian phase advance) should be more antidepressant than evening light (which causes a delay). Although no studies have shown evening light to be more antidepressant than morning light, investigations have shown either no difference or morning light to(More)
The following test of the circadian phase-shift hypothesis for patients with winter depression (seasonal affective disorder, or SAD) uses low-dose melatonin administration in the morning or afternoon/evening to induce phase delays or phase advances, respectively, without causing sleepiness. Correlations between depression ratings and circadian phase(More)
Five patients with winter depression received low doses of melatonin in the afternoon, and five patients received placebo capsules. Melatonin treatment significantly decreased depression ratings compared to placebo. If these findings are replicated in a larger sample with documentation of expected phase shifts, the phase shift hypothesis will be(More)
We have recently shown that six of seven totally blind people (who had free-running circadian rhythms with periods longer than 24 h) could be entrained (synchronized) to a nightly dose of 10 mg melatonin. After treatment discontinuation and re-entrainment to the 10 mg dose, we further found in three of these subjects that the dose could be gradually reduced(More)
Measuring the dim light melatonin onset (DLMO) is a useful and practical way to assess circadian phase position in humans. As a marker for the phase and period of the endogenous circadian pacemaker, the DLMO has been shown to advance with exposure to bright light in the morning and to delay with exposure to bright light in the evening. This 'phase response(More)
BACKGROUND Despite advances in prevention and treatment, sexually transmitted infections (STIs) remain an important cause of morbidity and mortality in the United States. PURPOSE To systematically review the evidence for behavioral counseling interventions to prevent STIs in adolescents and adults (nonpregnant and pregnant). DATA SOURCES(More)
CONTEXT Though complementary and alternative medicine (CAM) treatments are popular, evidence to support their application to diabetes care is scarce. Previous CAM diabetes research has generally focused on single modalities, but CAM practitioners more commonly prescribe complex, multimodality interventions. OBJECTIVES The aims of this study were to(More)
BACKGROUND The burgeoning use of complementary and alternative medicine (CAM) highlights the need for high-quality research to discriminate between those approaches based on positive anecdotes or polished marketing and those that are consistently effective and safe. DESCRIPTION To help meet this need, the Oregon Center for Complementary and Alternative(More)
The ADVANCE (Accelerating Data Value Across a National Community Health Center Network) clinical data research network (CDRN) is led by the OCHIN Community Health Information Network in partnership with Health Choice Network and Fenway Health. The ADVANCE CDRN will 'horizontally' integrate outpatient electronic health record data for over one million(More)