What is the authenticity of the hadith: "Cow's milk is a cure, its fat is a medicine, and its meat is a disease," and what is its explanation, and is its statement scientifically sound?

This Hadith (definition) has been narrated with weak chains of transmission, among them what Al-Hakim, Abu Nu'aym, Al-Tabarani, and Abu Dawud narrated, as Al-Dhahabi, Ibn Hajar, and Al-Sakhawi deemed them weak due to the weakness of their narrators, their anonymity, or a break in the chain of transmission.

However, this Hadith was narrated through a stronger chain from Abdullah ibn Mas'ud, elevated (to the Prophet), (Peace be upon him): "Allah has not sent down any disease but that He has also sent down a cure for it, so adhere to cow's milk, for it eats from every tree." Ibn Hibban, Al-Hakim, Al-Nasa'i, the verifiers of Ibn Hibban's book, and Al-Sakhawi authenticated it.