I don't know whether they have a different dataset of books, but the search engine is definitely vastly superior. Not only in looks, but most importantly in terms of results.
Sadly, I wouldn't trust any mainstream nutrition advice at all. When you see the McDonalds and Coca Cola logos behind footballers, and find out that the food pyramid was made by the Department of Agriculture and unsurprisingly advocates for crops, you become really suspicious.
Remember that this guy already has had British citizenship, but he decided to immigrate to Germany despite the language barrier and not being a citizen.
This literally means "how much do you earn as an airport in Germany". The answer is 2194€. Made me laugh.