JAZZ OR ROCK? –
Oct. 13, 2025 – The tendency to use cannabis is associated with genes linked to impulsive behavior, obesity, schizophrenia and bipolar disorder, among other traits. 24 states legalized recreational marijuana. The drug’s use, in forms that are highly potent and easier to use repeatedly throughout the day, has proliferated across age groups. … In 2024, an estimated 64.2 million people had used cannabis during the previous year, according to an annual federal survey. That’s up from an estimated 53.2 million three years earlier.
The survey also reported that, in 2024, an estimated 20.6 million people had a cannabis use disorder, defined as a spectrum of problematic use that can cause distress or interfere in one’s daily life. That’s also an increase from previous years.
Recent research into the human genome has offered tantalizing clues into the genetic patterns of people who use — and sometimes abuse — marijuana.
In the new study, researchers at UCSD examined genetic data from nearly 132,000 clients of 23andMe who responded to surveys about their cannabis use.
