Why is Wolverine so old in Logan?

Why is Wolverine so old in Logan? Like having a skeleton coated in lead, the metal leeches into Logan’s body over time. It takes years to have a major effect, but by 2029, the year “Logan” is set, the adamantium has so weakened Logan that he’s aging at a normal rate and struggling to heal himself after injuries.

Like having a skeleton coated in lead, the metal leeches into Logan’s body over time. It takes years to have a major effect, but by 2029, the year “Logan” is set, the adamantium has so weakened Logan that he’s aging at a normal rate and struggling to heal himself after injuries.
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