Connecticut became the 19th sate to legalize recreational marijuana, completing a Northeastern block of new legal weed states including New Jersey and New York. But unlike those states, Gov. Ned Lamont signed a bill that includes unusually strong public health protections, including a 30 percent limit on levels of intoxicating THC—only the second state to do so after Vermont. In addition, advertising and products designed to appeal to children are forbidden, and municipalities can invoke an opt-out provision to not only prohibit dispensaries but also delivery services, and can set limits on the number of businesses, operating hours and signage. The safeguards are generally opposed by the powerful cannabis industry, but are increasingly being recognized as necessary as states—including Colorado—assess the impact of legal marijuana on health and vulnerable populations, including young people. Meanwhile, a new study published in JAMA finds that increased marijuana use was associated with greater risks of thoughts of suicide, suicide plan, and suicide attempt among young adults ages 18-35. The large-scale study showed that the associations remained regardless of whether someone was also experiencing depression, and the risks were greater for women than for men. Even those who used cannabis on a non-daily basis were more likely to have suicidal ideation or attempt suicide than those who did not use the drug at all. And finally, the city of Somerville, Mass., near Boston, is considering opening the country’s first supervised drug consumption site amid a 5 percent increase in drug overdose deaths in the state. Attempts to open such facilities—which provide medical attention, clean needles and overdose reversal drugs—have already faltered in New York, San Francisco and Philadelphia due to legal complications. Safe sites in other countries have proven to be effective to reduce overdose deaths and the transmission of infectious diseases, but are unlikely to engage users in drug treatment.