Answer:
Scientific journals from health organizations and scientific research publications such as PUBMED.
Step-by-step explanation:
Both sources are reliable because they present rigorous research methods, where they not only present updated research but are also corroborated that they are well done and do not provide false information.
The nutritional research on these sites is what I recommend, but it does not mean that they are the only ones, to my knowledge they are reliable and provide good information in this regard.
In order to better know a topic or some concepts, it is necessary that you base them on sources with reasonable scientific evidence, reliable methods, and certainty in the results, that is why whenever you look for scientific research, my advice is that the bases more on search for meta-analyzes that are types of research with greater intellectual wealth and greater confidence.