Feeling run down?!

Feeling run down?

Hi, I'm 18 male and have been feeling run down, nervous around people and have developed mental sluggishness and am constantly tired over the past year, find hard to focus on things. All said I am fit as I train regularly but find while playing field games that I am out of breath more easier than the guys who don't train. I bought a lung capacity tester and the results show I have only half the lung\oxygen capacity of a normal man. I am 5 7" and of medium build. I am really at my wits end with these main symptoms as the doctor says its all in my mind and I am a normal teenager. I know for certain this is not the case. I was wondering are there any people out there who could advise me on any type of tests I could ask the doctor to perform. I have done a diabetes test with a test kit and my sugar level keeps coming up as normal. I know there is something seriously wrong as I find it hard to sleep and as a result find it hard in the morning to get out of the bed. I dont smoke or do drugs

I would suggest having you iron levels checked out, this lethargic behaviour maybe due to the fact you may be anaemic.

However do not take my advice, you need to go to the Doctor to have a full check up, and tell the doctor of your symptoms.

Another thing is if you are worried about something, or something has bothered you may also experience the similar symptoms to what you state.