A new study by a UK-based research group, Drug Science, suggests that medical marijuana could help treat suicidal ideation. The researchers assessed about 4000 patients at the beginning of the study, but observational data was available for 2,112 patients at three months, and 777 patients for 12 months. The goal of the study was to observe the prevalence and correlates of suicidal ideation among individuals seeking medical marijuana based products, according to the paper published Wednesday in Archives of Suicide Research. Some 25% of the sample confirmed suicidal ideation at treatment entry a…