This is the 1592nd most frequent German word.
nachgewiesen
Proven or demonstrated.
In this sentence, 'nachgewiesen' is used as the past participle of 'nachweisen', functioning as part of a passive construction indicating something has been proven.
Es wurde nachgewiesen, dass regelmäßige Bewegung die Gesundheit fördert.
It has been proven that regular exercise promotes health.
Here, 'nachgewiesen' is the past participle of 'nachweisen', used as part of the perfect tense describing an action the researchers completed.
Die Forscher haben nachgewiesen, dass die neue Methode effektiver ist.
The researchers have proven that the new method is more effective.
In this sentence, 'nachweisen' is used as the infinitive form, part of the modal construction 'kannst du nachweisen', asking about the ability to prove something.