Carrie Arnold is a Virginia-based freelance science journalist who covers many aspects of the living world. She’s a contributing editor at NOVA Next, and has also written for Mosaic, National Geographic, Aeon, Nautilus, Scientific American and Women’s Health. She is also the author of “Decoding Anorexia: How Breakthroughs in Science Offer Hope for Eating Disorders.”
Carrie Arnold
From this contributor
Weighing up autism’s obesity crisis
Autism’s underlying biology, associated behaviors and treatments can all put people on the spectrum at serious risk for obesity.
Rare form of autism shows unique pattern of regression
More than 40 percent of children with Phelan-McDermid syndrome lose skills they once had, beginning, on average, at age 6.
Rare form of autism shows unique pattern of regression
By
Carrie Arnold
24 May 2017 | 3 min read
The innovators: How families launch their own autism studies
Some parents are starting ‘N-of-1’ studies for autism, but their efforts don’t always get taken seriously.
The innovators: How families launch their own autism studies
By
Carrie Arnold
28 September 2016 | 20 min read
The invisible link between autism and anorexia
Autism and anorexia may seem to have nothing in common, but below the surface, the two conditions are startlingly similar—and sometimes affect the same person.
The invisible link between autism and anorexia
By
Carrie Arnold
17 February 2016 | 18 min read
Explore more from The Transmitter
Diverse autism genes derail common developmental pathways
Multiple genetic mouse models initially show delayed cortical development, but the animals’ molecular trajectories diverge within weeks after birth, a new study finds.
Diverse autism genes derail common developmental pathways
Multiple genetic mouse models initially show delayed cortical development, but the animals’ molecular trajectories diverge within weeks after birth, a new study finds.
By
Holly Barker
8 July 2026 | 5 min read
Brain’s sex differences are subtle and contradictory, large MRI study finds
Sex-based behavioral differences do not match with variations in brain activation or structure in a study of almost 1,000 people.
Brain’s sex differences are subtle and contradictory, large MRI study finds
Sex-based behavioral differences do not match with variations in brain activation or structure in a study of almost 1,000 people.
By
Lauren Schenkman
8 July 2026 | 5 min read
A consensus on the definition of profound autism, and more
Here is a roundup of autism-related news and research spotted around the web for the week of 5 July.
A consensus on the definition of profound autism, and more
Here is a roundup of autism-related news and research spotted around the web for the week of 5 July.
By
Sarah Thau
7 July 2026 | 2 min read