- 1 Obstructive Sleep Apnea
- 2 depression
- 3 hormonal changes
- 4 stroke
- 5 drugs
- 6 undernutrition
- 7 Other reasons
- 8 References
Obstructive sleep apnea
The self-stop during sleep is a condition treatable affect spatial memory, ie, it reduces the ability to remember directions, places put things, according to a study published valuable Journal of Neuroscience, and explain it is that apnea leads to oxygen several break times the brain, which is one of the causes of dementia and memory loss, and signs of infection by waking up with headaches, and fatigue during the day, and loud snoring during sleep. 
Focus deficiency is the most common symptoms of depression common, Depression can lead to the difficulty of work or study;  where some studies have shown that depression slows down the speed of receiving and processing information, because there are several parts of the brain involved in creating and retrieving memories, and any difference in the output about depression in these parts affects memory and concentration. 
Complain about a large number of women from the lack of focus during pregnancy, especially in recent months; Because the change in hormones caused by pregnancy affects the brain. 
Strokes affect the cerebral vessels and small, thereby reducing the flow of blood laden with oxygen and essential nutrients to the brain, and this adversely affects the functions and result in poor concentration and memory loss, ranging this effect from mild to weak and is called weak cognitive vascular. It is true that a lack of focus and forgetfulness of the results of strokes, but it may also be an early warning of the infection. 
Can be memory loss effects of offending some medicines ,, and these drugs, according to the US Food and Drug Administration: 
- Drugs lower cholesterol.
- Diabetes medications.
- Some painkillers.
- Medicines for sleep.
- Drugs anti-histamine.
- Anti-anxiety medications.
- Antidepressant medication.
The lack of vitamin B-12 or a B vitamins in the body can lead to confusion or dementia, so it is important to get about 2.4 micrograms of vitamin B12 in the diet, by eating natural sources such as dairy products, meat, and fish. 
There are other reasons for forgetfulness, dementia, including alcohol and drug abuse, or the incidence of anemia, which reduces the transfer of oxygen to all members of the body, or head injuries, or some other diseases such as Alzheimer's. 
- ^ أ ب ت ث Mary Elizabeth Dallas, "5 Surprising Causes of Memory Loss"، www.everydayhealth.com, Retrieved 28-10-2017. Edited.
- ^ أ ب ت "10 reasons why you can't concentrate", www.health24.com, Retrieved 28-10-2017. Edited.
- ↑ Mikel Theobald (23-1-2013), "Depression, Memory Loss, and Concentration"، www.everydayhealth.com, Retrieved 28-10-2017. Edited.
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