affron (R) a novel saffron extract (Crocus sativus L.) improves mood in healthy adults over 4 weeks in a double-blind, parallel, randomized, placebo controlled clinical trial

作者：Kell, Graham; Rao, Amanda^*; Beccaria, Gavin; Clayton, Paul; Manuel Inarejos-Garcia, Antonio; Prodanov, Marin

来源：Complementary Therapies in Medicine, 2017, 33: 58-64.

DOI：10.1016/j.ctim.2017.06.001

• Clinical trial
• Mood disorders
• Saffron extract
• Phytonutrient
• Depression

Background: In recent years phytotherapy has been explored as a source for alternative treatments for mood disorders. One potential candidate is saffron (Crocus sativus L.), whose main bioactive components are crocins and safranal.
Objectives: The aim of this study was to investigate the efficacy of affron (R), a standardised stigmas extract from Crocus sativus L. for improving mood, stress, anxiety and sleep quality in healthy adults.
Methods: In this 3 arm study, 128 participants self-reporting low mood but not diagnosed with depression, were given affron (R) at 28 mg/day, 22 mg/day, or a placebo treatment in a randomized, double-blind, placebo-controlled trial for 4 weeks. Mood was measured at baseline and at the end of the study, using the POMS (primary outcome measure) and PANAS questionnaires, and the DASS-21 scale. Sleep was monitored using Sleep Quality Index (PSQI).
Results: Analysis indicated a significant decrease in negative mood and symptoms related to stress and anxiety at a 28 mg/day dose (with a significant difference between 28 mg/day and placebo on the POMS Total Mood Disturbance scale, p < 0.001, d = -1.10), but no treatment effect at the 22 mg/day dose.
Limitations: The main weaknesses of this investigation were found in the self-reporting nature of both the screening and the testing.
Conclusions: affron (R) increased mood, reduced anxiety and managed stress without side effects, offering a natural alternative to standard treatments.

• 出版日期2017-8