We know that Wizards and Witches have a prolonged lifespan, but we also know that a Squib is someone born into a wizarding family who doesn't have any magical abilities.

But does this mean that they no longer have a prolonged lifespan? or is it that their families' blood is what causes their longevity?

I know that Filch is a Squib, but I don't remember any mention of his age.

We know that Wizards and Witches have a prolonged lifespan, but we also know that a Squib is someone born into a wizarding family who doesn't have any magical abilities.

But does this mean that they no longer have a prolonged lifespan? or is it that their families' blood is what causes their longevity?

I know that Filch is a Squib, but I don't remember any mention of his age.