Why do Akitas lick so much?

Can you explain why Akitas, a breed of dog known for their loyalty and fierce personality, tend to lick excessively? Is it a behavioral trait specific to the breed, or could there be underlying health issues that contribute to this behavior? Furthermore, how can owners differentiate between normal licking and excessive licking that may signal a problem? And what steps can be taken to address this behavior if it's excessive or unwanted?