Well, generally speaking, menopause can cause dark circles. So you should just be more careful about it. Anyway, in daily life, you need to pay more attention to it. Also, you should know that dark circles are caused due to various reasons. For example, heredity can cause dark circles under your eyes. As we know that people who are born with thinner skins under their eyes often expose the dark veins underneath and they appear as dark circles. Also, fatigue and shortage of sleep also causes dark circles which the most common causes are well known by many people. Besides, Sinus problems and pregnancy are also causes of dark circles. To treat them, there are many tips you should know. You can also have some Moisturizers containing Vitamin E and K, so that it can lessen the appearance of dark circles. Beside, you can eat some black chocolate which are rich in Lutein and zeaxanthin, which can do a good job to your dark circles and the sight. Also, many kinds of oil, such as the black seed oil is very effective to your dark circles too.