Talk:Hiro Hamada/@comment-3444885-20140801154842/@comment-3444885-20140804022717

No, I said that Baymax was speaking figuratively about the heart problems. It's probably not something heart-related. I'm thinking it's more emotional. Tadashi was his only sibling, best friend and the person he looked up to the most; and he's dead. Possibly murdered. Understandably (especially if it turns out his parents are dead, too), Hiro may be clinically depressed.

That would explain why Baymax has a sort of "happiness meter" he shows to Hiro (with a scale from mad and sad faces to smiles). He might be monitoring how he's feeling emotionally.