As with many interventions intended to prevent ill health, the effectiveness of parachutes has not been subjected to rigorous evaluation by using randomised controlled trials. Advocates of evidence based medicine have criticised the adoption of interventions evaluated by using only observational data. We think that everyone might benefit if the most radical protagonists of evidence based medicine organised and participated in a double blind, randomised, placebo controlled, crossover trial of the parachute.
Many doctors are afraid that they will get into trouble with the Drug Enforcement Administration every time they write a prescription for a controlled substance, but those fears are overblown, according to one DEA official.
There is a growing amount of evidence-based research supporting various botanicals; and/or primary evidence comes from a long medicinal use. Evidence-based research may be limited, but we shouldn't ignore botanicals that have been used for 1000s of years,
J. Handler, C. Feied, M. Smith, and M. Gillam. AMIA Annu Symp Proc, (2006)Handler, Jonathan Feied, Craig Smith, Mark Gillam, Michael United States AMIA ... Annual Symposium proceedings / AMIA Symposium. AMIA Symposium.