[quote=jechel.eonni;#199445;1340864835]3. Dark circles and under-eye bags. Dark circles and under-eye bags are mostly hereditary, however if you find they make a sudden appearance or get significantly worse, this may point to certain health problems. The under-eye area is thought to be linked to the kidneys, so changes here may suggest dehydration or a build-up of toxins. To counteract this, drink more water and cut down on alcohol, caffeine and salt. Alternatively, circles could be caused by anaemia, due to vitamin B12 or iron deficiencies.[/quote] Lack of sleep will give this too