I reacted HORRIBLY as well!!! Not sure why but oh my goodness, I hadn't been in that bad of shape in a long while. Never again, for me.
Edit: just came across this article:
https://health.usnews.com/health-news/blogs/eat-run/articles/2018-02-12/healthier-ice-creams-allow-you-to-eat-the-whole-pint-and-this-dietitian-doesnt-like-it?context=amp