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Doctor insights on: I Always Feel Tired Even After 8 Hours Of Sleep

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I get about 8 hours of sleep but during the day I always feel tired. What is that? Could it be my diet?

I get about 8 hours of sleep but during the day I always feel tired. What is that? Could it be my diet?

Sleep apnea?: It could be several things, the most common being heavy snoring with periods in which u stop breathing (apnea). This apnea causes low oxygen with abnormal sleep cycles which does not allow u to have quality rest, thus being tired. Other possibilities include anemia or chemical imbalances. You should talk to your doctor. You diet may contribute, but is unlikely to be "the" reason.

Dr. Heidi Fowler
5,002 Doctors shared insights

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Sleep is a topic that involves concepts such as how long it takes to fall asleep, how many times one wakes up at night, how many hours one sleeps at night, sleep stages, ...Read more


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Dear doctor, recently I am experiencing tiredness. I am 22 year old male. How many hours of sleep is required by me?

Dear doctor, recently I am experiencing tiredness. I am 22 year old male. How many hours of sleep is required by me?

8 - 9: Most experts agree that 8 - 9 hours of sleep is optimal. They are looking into the maximum hours recommended without negative effects.

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I always feel tired even though I sleep enough. Why is this?

I always feel tired even though I sleep enough. Why is this?

Other causes too: Tiredness can be caused by causes other than sleep deficit. One common cause is anemia (low hemoglobin)...so you may want to get your blood count (CBC) done. Stress can also cause fatigue and so can depression. I would advice you to take up exercise (like a brisk walk, 30min, a daily basis. This will help to give you extra strength but it takes more than a month or so before your body will be energiz

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I sleep 8 hrs. I exercise 30min a day. Why do I always feel tired & weak?

I sleep 8 hrs. I exercise 30min a day. Why do I always feel tired & weak?

You may be anemic: There are multiple reasons that you may feel tired and weak. You may have anemia, a low red blood cell count because of blood loss due to your menstrual period. Your thyroid gland may be underactive. You need to consult your doctor to find out why you are so fatigued.

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Hi I always feel tired during sleep age 57?

Hi I always feel tired during sleep age 57?

Complex question: In my experience the first thing to rule out is sleep apnea particularly with your symptoms. Anything which interferes with proper brain function can cause this so unfortunately there are a lot of possibilities. You might start with your family doc?

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Hi, am 25 male and have BP 140/100. How serious is it? I always feel tired after I wake up, I get dreams during my entire sleep time. Is it connected?

Hi, am 25 male and have BP 140/100. How serious is it? I always feel tired after I wake up, I get dreams during my entire sleep time. Is it connected?

Cause: You are too young to have high blood pressure. You need to see your physician to find out the cause: hyperthyroidism, adrenal disease, pituitary problems, kidney issues... You can't accept this as normal until a workup failed to find a cause.

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I always feel tired. I always have an enough sleep every night. What are your solutions?

I always feel tired. I always have an enough sleep every night. What are your solutions?

Good morning: Waking up tired can be due to several factors. A person after a good night sleep should wake up energetic. If you are having this problem make sure you are getting adequate sleep and cut back on caffeine, booze and smoking. Sleep apnea can be one of the reasons of feeling tired on waking up. If you are overweight or have a history of snoring consult a physician for a sleep study.

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I always feel tired and sleep most of the day. I don't feel motivated to want to get up and do household chores. What could this be? I need help!

I always feel tired and sleep most of the day. I don't feel motivated to want to get up and do household chores. What could this be? I need help!

Almost anything: Either physical or psychological. There are countless possibilities that need to be evaluated by your doctor.

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Is their anything I can do as I sleep well at night and yet I always feel tired during the day?

Snoring?: The first thing that any doctor would want to know is whether you snore, whether anyone around you notices you snore and whether or not you have ever had a sleep study. You would benefit from talking to a doctor so that additional causes can be ruled out like iron deficiency anemia, hypothyroidism, B12 deficiency, micronutrient deficiency, anxiety or depression. Stay safe!

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I've been working in a night shift for more than 2 years. Now I always feel tired and weak eventhough I have sleep enough. What should I do?

I've been working in a night shift for more than 2 years. Now I always feel tired and weak eventhough I have sleep enough. What should I do?

Shift work syndrome: Night workers often get poor sleep during the day and often have chronic fatigue after a short while doing it. Minimizing light exposure during the day and using medical lamps (used for seasonal affective disorder) can help in setting your physiologic clock - but often nothing works other than switching to a more normal shift.

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Heloo I m honey. My age is 19 years. I feel tiredness after sleep. And my sleep duration is very long. Due to this problem I feel difficulty in my stu?

Heloo I m honey. My age is 19 years. I feel tiredness after sleep. And my sleep duration is very long. Due to this problem I feel difficulty in my stu?

See a good doctor: There are many possible causes of feeling tired. It's impossible to diagnose you in this format. You need an exam & tests. Possible causes include anemia, thyroid & other hormonal imbalances, vitamin/mineral/amino acid deficiencies, all sorts of chronic infections (viral, bacterial, fungal, parasitic), environmental or food allergies, environmental toxins, sleep apnea, stress etc. Please see doc!

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Why do I always feel tired & weak with a low energy level no matter how much I sleep could this be happening because?

Why do I always feel tired & weak with a low energy level no matter how much I sleep could this be happening because?

Diet: This is because of cellular energy deficiency that is the equivalent of poor engine performance in your car when the wrong fuel is used. I would be willing to bet that your diet is full of "junk", especially the sweet stuff. I see this every day in my clinic and know its cause only too well!

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Any ideas on why I'm so tired even after 8 hours of sleep?

Any ideas on why I'm so tired even after 8 hours of sleep?

Sleepy: Some causes are sleep apnea, narcolepsy, depression, medicine side effects, depression, thyroid disease and more. See a sleep doc.

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How do I figure out why I am so tired even after 8 hours of sleep?

How do I figure out why I am so tired even after 8 hours of sleep?

Prevention: Being tired all the time may indicated sleep problems that can be life shortening or life threatening. The only way to know if there are serious problems is with an overnight sleep test. I encourage you to seek help.

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What kind of vitamins should I take because I'm constantly feeling tired even after 8+ hours of sleep?

What kind of vitamins should I take because I'm constantly feeling tired even after 8+ hours of sleep?

Hard to say: The 2 most common nutritional deficiencies in the u. S. Are vitamin d (if you live north of atlanta, ga or you do not get enough sun exposure without sunblock) and essential fatty acids (omega 3s) if you do not eat wild, cold water fish on a regular basis. Be sure your thyroid level is okay, you do not have sleep apnea and that you are not anemic, three common causes of fatigue.

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Very sore breasts light cramping very tired even after 8 hours of sleep and its seems like all I want to do is eat and sleep. Help! Please?

Very sore breasts light cramping very tired even after 8 hours of sleep and its seems like all I want to do is eat and sleep. Help! Please?

See your doctor: There are many reasons that can cause this. It could be vitamin mineral deficiency. It could also be thyroid dysfunction or even pregnancy. Do a pregnancy test and see your physician for a workup if these are new symptoms.

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Why is it that I feel tired after 8 hours of sleep but fine after 5 or 10 hours?

Why is it that I feel tired after 8 hours of sleep but fine after 5 or 10 hours?

Sleep: Some of it could be due to sleep inertia as well as the stage of sleep you are waking up from. Typically if you are woken up from a deeper stage of sleep you may still feel a bit more tired rather than a lighter stage of sleep. Also, studies suggest that we seem to be a poor judge of how we feel after being sleep deprived, so you may be sleepier than you think.

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Ever since I started mu diet I've been very tired. Ill have 8 hours of sleep and take a 1+ hour nap and still sleep earlier than I used to.?

Ever since I started mu diet I've been very tired. Ill have 8 hours of sleep and take a 1+ hour nap and still sleep earlier than I used to.?

I would ask myself..: ... 1) how many calories are you limiting yourself to? 2) are you "grazing " throughout the day to keep up your blood sugar levels? 3) are you eating balanced meals ensuring enough proteins, carbohydrates and healthy fats? Go see your doctor for a more thorough history and evaluation which ideally should be done before starting any diet. They can identify problems and set realistic goals for you!