I really like https://www.scirra.com/construct2 for having fun and fast prototype iterations. Just be aware, that it is UI and click heavy, but yet powerful and flexible. I think it will be hard to manage large code bases in Construct, but that is something I have not yet gotten into with my simple hobby projects.
If you like scientific papers but are not an expert in the nutrition field, this would be a great start.
I would also be interested in other's opinions about the site, e.g. if it is unfairly in favor of plant based diets.