Lady Gaga has responded to rapper Kanye West's hospitalization with a string of supportive tweets. "i support & love u brother, I see in you bravery & courage to stop this tour & take care of YOU. You are a GREAT artist," she offered in one post. "While I don't agree with everything he does I hope the public shows compassion and for @kanyewest and each other. One love. One Race," read another message. "It's not funny to joke about anyone's possible or not possible mental illness, this is a sensitive time for many. Let's be kind & loving," she also said. West -- who is married to "Keeping Up with the Kardashians" star Kim Kardashian -- has been hospitalized since last Monday for "exhaustion." He last week canceled his Saint Pablo concert tour following days of attention-grabbing rants on stage.