Just in time for Medical Marijuana Week  comes word that the first U.S. clinical trials  on marijuana in more than 20 years has found that it is effective in relieving pain and treating multiple sclerosis and other ailments, potentially opening the way for the federal government to revisit its longstanding claim that pot has no medicinal value.
Most significant are findings that even low levels of marijuana offer significant pain relief with minimal health consequences. Unfortunately, the San Francisco Chronicle also reports  that the UC San Diego researchers have almost run out of funding before all its planned tests have been completed.
San Francisco has long been a leader in the medical marijuana movement, both with its proactive approach to regulating cannabis clubs , and with the sponsorship of efforts to decriminalize pot by state legislators Tom Ammiano and Mark Leno. Oakland’s pot-cultivation school Oaksterdam University also bankrolled an initiative aimed for the November ballot that would legalize weed for even recreational use.