Smoking Out Users
A large national survey, taken from 2016 to 2017 and published in JAMA, reports that people with asthma, chronic obstructive pulmonary disease, arthritis, cancer or depression are more likely to say they use marijuana than people without such illnesses.
The numbers skew young, with one-quarter of people ages 18 to 34 reporting current marijuana use but only 2.4% of people 65 and older.
More people are getting cancer, but fewer are dying from it. An international study across 197 countries reported there were nearly 25 million cancer cases in 2017, of which 10 million resulted in deaths.
Between 2007 and 2017, cancer incidence rates rose in 123 countries; death rates declined in 145 countries. The most common cancer type in men and women in 2017 was non-melanoma skin cancer. Men died most often from respiratory cancers, while breast cancer was the deadliest among women.
Body of Knowledge
Vomeronasal organs are located inside the nose and are responsible for detecting subtle airborne pheromones from the opposite sex. In modern humans, they don't appear to have much of a role, even lacking nerves connecting them to the brain.
Get Me That, Stat!
Although fewer pregnant women and newborns are dying prematurely around the world, the number who do is still staggering: 2.8 million every year, according to the World Health Organization. Most deaths occur in low-income settings and, according to experts, are preventable.
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