Personally, I think grapefruit is best not to be eaten with milk.

Grapefruit is an acidic fruit, rich in tannic acid.

Milk is a high protein beverage.

When they are eaten together, it is easy for tannic acid to react with protein to produce an indigestible substance.

It has an effect on gastrointestinal function,

Protein will also be deformed,

Affect the human body's absorption of its nutrients

Thank you.