Hi dr, please can you assist me. for some time now regardless how long i sleep i still wake up feeling exhausted. my sleep is always very light, and the dark circles under my eyes are getting worse. it's been like this for over a year now.

Doctor can evaluate: Normal, healthy people do not have "constant tiredness" without a good reason. One's primary care doctor can follow along and look for reasons for fatigue, such as anemia, infection, mental illness like depression, auto-immune disease, thyroid problem, cancer, sleep disorder, etc... Various tests may be needed, depending on one's whole story, and her sequence of symptoms.