Age spots are a normal part of the aging process of your skin. They're just something that happens as you get older, and there's nothing you can do about them.
The hyperpigmentation from age spots can be known by a host of other names: senile lentigo, lentigines, sun spots, or liver spots. These dark spots appear on the face, arms, and hands as we age.
They're only nicknamed "age spots" because they typically don't start to make an appearance until later in life, but they actually have very little to do with the "normal" aging process.
What they really are is evidence of your history of not taking very good care of your skin. They can be a major side effect of sun damage, appearing on the areas of our skin that get the most exposure to UVA/UVB rays.