Here are some of the biggest medical advances in 2023
New treatments include the first CRISPR gene-editing therapy, an Alzheimer’s drug and RSV vaccines
![A photo illustration of a package of Narcan](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/12/121623_YE_drugs-roundup_feat.jpg?fit=1030%2C580&ssl=1)
In March, the U.S. Food and Drug Administration said the nasal spray Narcan, which can reverse the effects of an opioid overdose, could be sold over the counter.
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