Alex DiFeliceantonio
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difeliceantonio.bsky.social
Alex DiFeliceantonio
@difeliceantonio.bsky.social
Assist. Prof. at Virginia Tech. My lab studies brain/metabolism interactions in food reward. Scifi reader. Plant killer. She/her
DONNUT: https://fbri.vtc.vt.edu/research/labs/difeliceantonio.html
Emma Leslie is writing up the fMRI outcomes now, so keep an eye out for that soon!
And if you ever want to see @davybrenda.bsky.social eye twitch ask her about canned peaches.
November 19, 2025 at 11:44 AM
If you ever want to trauma bond with someone run a controlled feeding trial together. @davybrenda.bsky.social is stuck with me forever now.
Maria Rego was an absolute champion in getting this study done.
This study is as funded by NICHD @vtcals.bsky.social @fralinbiomed.bsky.social
November 19, 2025 at 11:39 AM
We didn’t see any differences in what people chose to eat at the buffet meal, but we did observe higher nonUPF calories consumed after the UPF diet in our younger cohort. This was mainly driver by consumption of our nonUPF potato chip, so I wouldn’t conclude it was an increase in “healthy” choices.
November 19, 2025 at 11:39 AM
Our intervention diets were well matched as were our items in the test meals. A secondary aim was to examine food choice of either UPF or MPF items. More info on the foods is in our previous paper.

doi.org/10.1016/j.cc...
Redirecting
doi.org
November 19, 2025 at 11:39 AM
We also tested eating in the absence of hunger, a metric that predicts later weight gain in young people. Again the adolescents ate more after the UPF diet than the nonUPF diet.
They weren’t any hungrier before either meal and controlling for hunger or weight variation didn’t change our results.
November 19, 2025 at 11:39 AM
We were of course inspired by @kevinh-phd.bsky.social but also asked what happens to energy intake if you hold weight stable and test younger people.
We found that overall w/o weight gain UPF consumption did not increase energy intake. But if you examined our data by age younger people ate more.
November 19, 2025 at 11:39 AM
this gif actually perfectly sums up how I currently feel. The flames, elmo's expression, no notes.
November 18, 2025 at 8:50 PM
Thank you everyone! The production team at ABC and Dr. Darien Sutton were amazing to work with. I showed up that morning on 3 hours of sleep with my sons vomit in my hair because my 5 year old was up sick the whole night before, but they made everything look great.
November 18, 2025 at 5:41 PM
thanks!!
November 18, 2025 at 3:05 PM
And NIH funded! This work was supported by an NIDDK R01 to the lab and NSF GRFP to Zach. I definitely got too excited and should have made better skeets.
November 18, 2025 at 1:46 PM
The work is done at @fralinbiomed.bsky.social in @fbri-chbr.bsky.social! Zach is a TBMH Graduate student. And my department on main campus is Human Nutrition Foods and Exercise. @vtcals.bsky.social.
November 18, 2025 at 1:43 PM
The full segment airs tomorrow at 8:30 on ABC Streaming.
November 18, 2025 at 1:30 PM
Does anyone know if commons will update with the rescheduled date?
November 17, 2025 at 6:54 PM
Tell me you study norepinephrine without telling me you study norepinephrine
November 16, 2025 at 7:36 PM
I made it to the land of fat squirrels!
November 10, 2025 at 10:34 PM