As the Yakima city council considers more zoning and locating expansion for recreational marijuana, two new study reviews provided little support for medical weed.

Marijuana is often touted as an aid to treat chronic pain or post-traumatic stress disorder (PTSD) but NBC News is reporting there is little scientific evidence to support either its effectiveness or its safety.

According to the report up to 80 percent of people who request medical marijuana want to ease pain, while more than a third cite PTSD as their primary reason but after reviewing 27 studies researchers say they only found weak evidence that cannabis alleviates chronic neuropathic pain.