Does diet really influence health? If so, to what extent?
Terms like ‘carbohydrates’, ‘proteins’, ‘vitamins’ get thrown around all the time.

but what do they actually mean? Is there actually any benefit from e.g switching to a certain diet?

Im guessing you could say that eating fruits/vegetables as well as meat is a must - but other than that, can we really say anything about diet? Note that I know virtually nothing about this, but my hunch is that it doesn’t.