Around the world, 10.6 percent of people are left-handed. Handedness is a form of so-called functional brain asymmetry: left-right differences in brain function. In left-handers, the right motor ...

President Trump on Thursday signed an executive order to speed up the rescheduling of marijuana from Schedule I to the less severe Schedule III, with the stated goal of expanding cannabis research.

Marijuana’s classification as one of the most dangerous and habit-forming substances has long drawn criticism. By Luke Broadwater and Ashley Southall Luke Broadwater reported from Washington, and ...

As IVN’s Shawn Griffiths travels to Miami to share hard-earned intel at the National Association of Nonpartisan Reformers (NANR) conference, Chad and Cara focus on Washington, DC, where a 73 percent ...

Lacey W. Heinsberg receives funding from the National Institutes of Health. Amery Treble-Barna receives funding from the National Institutes of Health. A newly discovered biological signal in the ...

Remember the old public service announcement with the fried egg — “This is your brain. “This is your brain on drugs.” I always preferred Cheech and Chong’s “This is your brain on drugs with a side of ...

A mature marijuana plant begins to bloom under artificial lights at an indoor growing facility in California in 2019. Texas lawmakers expanded the state's medical marijuana program this year but ...

Scientists found that people who use both cannabis and tobacco show a distinct brain pattern tied to mood and stress regulation. Their scans revealed higher levels of an enzyme that reduces a natural ...

Previous research has found that the human brain reaches maturity sometime in the 20s, but a new study suggests that it never stops developing. Neuroscientists at the University of Cambridge have ...

Brain development involves five distinct epochs across a human lifespan. Late aging initiates declines in connectivity around age 83 and alters region reliance. Wiring differences potentially link to ...

The key ages in which the brain changes, according to scientists, are 9, 32, 66 and 83 Kimberlee Speakman is a digital writer at PEOPLE. She has been working at PEOPLE since 2022. She has also ...