Phil Reynolds & Richard Colley, via Facebook asked:
The plant Saint Johns Wort has been used for thousands of years to treat mild depression / anxiety disorders, but is there any scientific evidence that it does anything and how is it supposed to work?
Chris - I can quote meta-analyses of randomised control trials of St. Johnís Wort for major depression suggest that it is superior to placebo and itís similarly effective compared with conventional anti-depressant drugs and tends to have fewer side effects. St. Johnís Wort being a way of actually making your mood elevate. So itís a sort of natural anti-depressant. Although they do say in placebo control trials, trials from German speaking countries tend to report more favourable findings. So I guess the jury is out on that one.