Years and years of worshipping the sun - or just a mere few sunburns over the years - can cause age spots. They're flat, freckle-like spots that appear on body parts that tend to be exposed to the sun most, such as hands, arms and the face, and fair-skinned people seem to be most susceptible. The upper layer of skin is where melanin, the substance that gives skin color, is produced. UV light accelerates the...