A 7-year-old leukemia patient in Oregon is sparking discussion over how young is too young for medical marijuana.

Mykayla Comstock, who was diagnosed with acute lymphoblastic leukemia last spring, is one of more than 2,200 cancer patients in the state authorized to use cannabis -- including 52 children, The Oregonian reported.

She takes a gram of cannabis oil daily to combat the side effects of chemotherapy.

Mykayla, who calls herself "Brave Mykayla," told The Oregonian the drug helps her eat and sleep and makes her feel "funny, happy."

The girl's mother, Erin Purchase, claims cannabis has put her daughter's cancer in remission, but her father, Jesse Comstock, said Mykayla was "stoned out of her mind" during a visit in August and worries about the drug's effect on her mental development.

The couple is divorced, but Purchase has sole custody.

She told the newspaper Mykayla will decide when to stop taking the cannabis capsules.

Oregon's 14-year-old medical marijuana law doesn't require pediatricians to monitor usage by children.