Gandalf's comment about Frodo

[Lotrelf]

Originally Posted by Inziladun

Bilbo and Gollum were not actively resisting the Ring's pull on a constant basis. And Gollum had had his years lengthened by his possession of the Ring, but he hardly looked fresh as a daisy by the time Bilbo met him.

You're right, there! Gollum's case is different. He had surpassed the normal age of his life. But Bilbo would look younger than he actually was. He couldn't appear older than his actual appearance. How come Frodo looked older? The Ring played a part is true.