Health & Medicine
- 			
			
		GeneticsThe first U.S. trials in people put CRISPR to the test in 2019
Trials of the gene editor in people began in the United States this year, a first step toward fulfilling the technology’s medical promise.
 - 			
			
		Health & MedicineSurplus chromosomes may fuel tumor growth in some cancers
Extra copies of some genes on excess chromosomes may keep cancer cells growing. Without those extras, cancer cells form fewer tumors in mice.
 - 			
			
		LifePrions clog cell traffic in brains with neurodegenerative diseases
Prions may derail cargo moving inside brain cells, perhaps contributing to cell death in prion diseases.
 - 			
			
		Science & SocietyWhy Rembrandt and da Vinci may have painted themselves with skewed eyes
A strongly dominant eye, not an eye disorder, may explain why some great artists painted themselves with one eye turned outward.
By Sofie Bates - 			
			
		Health & MedicineA once-scrapped Alzheimer’s drug may work after all, new analyses suggest
An antibody that targets Alzheimer’s sticky protein amyloid showed promise in slowing mental decline, according to the company that’s developing it.
 - 			
			
		Health & MedicineScientists’ brains shrank a bit after an extended stay in Antarctica
The experience of an isolated, long-term mission at an Antarctic research station slightly shrunk a part of crew members’ brains, a small study finds.
 - 			
			
		Health & MedicineMedications alone work as well as surgery for some heart disease patients
Patients with stable ischemic heart disease may be able to avoid stents or bypass surgery with medications alone.
 - 			
			
		NeuroscienceIs taking birth control as a teen linked to depression? It’s complicated
As researchers sift through conflicting data, no clear answers emerge on whether birth control during teenage years can cause depression later.
 - 			
			
		Health & MedicineA dose of ketamine could lessen the lure of alcohol
Ketamine may weaken wobbly memories of drinking, a trick that might ultimately be useful for treating alcohol addiction.
 - 			
			
		Health & MedicineA protein helps disease-causing immune cells invade MS patients’ brains
Blocking the protein may hinder B cells invading the brain in multiple sclerosis, a study in mice and ‘stand-in’ human brain barriers finds.
By Sofie Bates - 			
			
		Health & MedicineDengue cases in the Americas have reached an all-time high
There have been more dengue cases in the Americas this year than ever before, according to the Pan American Health Organization.
 - 			
			
		NeuroscienceSome people with half a brain have extra strong neural connections
Brain scans of six people who had half their brains removed as epileptic children show signs of compensation.