Is it depression or a sleep issue?
Many people who have a sleep issues have the same symptoms of depression. If you are tired all the time this could be due to sleep apnea or sleep deprivation as much as depression. If you wake in the morning with a headache or feeling like your thinking is blurry this is a common sign for sleep apnea. You probably spent the night with your oxygen levels going up and down, this keeps the brain from getting the oxygen and blood it needs throughout the night.
Your memory needs rest to work.
Many people whether you are a student getting ready for a test or a person who thinks that if they work just a few more hours they will get ahead are actually causing issues with their memory. When we sleep we go into certain stages of sleep. We start the beginning of the night going into slow wave sleep, this allows our body to heal and grow by releasing several hormones including human growth hormone. Later in the night we go through cycles of sleep and REM sleep. REM sleep is where we dream and is also where we take information and move it from short term memory to long term memory. If you disrupt this cycle you may miss the refreshment of your body and your mind.
High Blood Pressure, Diabetes and other conditions aggravated by Sleep Apnea
Try holding your breath. You will feel your heart start to pound and feel pressure building in your chest. Now imagine doing that all night long. Some people may only do this during certain positions or during certain stages of sleep. Other people do this all night long and get worse as the night goes on. The heart is stressed and has to work harder every time you hold your breath. Each time you are unable to breathe you cause stress. This stress releases cortisol which causes you to stress. This contributes to increases in your blood pressure and blood sugar.
Keep a diary see if your sleep is affecting your health.
We really do not think about how much or how well we sleep. Keeping a sleep diary will help you to determine if your sleep habits or your sleep quality is contributing to your problems. You should keep it for at least two weeks. During this time you should document the time you go to bed, how long you think it took you to go to sleep, the time you wake up and how long until you get out of bed. You should also document any time you get out of bed during the night and for how long. I would also keep track of how much caffeine you had consumed during the day, if you took a nap and for how long and any unusual exertive activities you may have done.
In the end it is as much up to you as it is up to your doctor to figure out what is causing your health problems. There are times when you can find that the solutions to your problem may not need a medication as much as it is small changes in your lifestyle or maybe be evaluated for a sleep disorder.