A blood test showed low testosterone levels. I am fatigued and irritable. A MRI of the pituitary

DID YOU FIND OUT WHAT IS GOING ON WITH THE PITUITARY? CUSHINGS????

Sounds like you have adrenal Fatigue Syndrome my friend. (Hypoadrenia). You have probably been through some very stressful situations recently and have had some that have taken their toll on your endocrine system through the years. You should take a saliva test to find out all of your hormone levels. You will need some sort of naturo type doctor who understands the adrenal and pituitary systems to explain what you need. You can be cured through proper nutrition but it might take a couple of years. You just need to ask your naturo doctor what are the proper foods for you. If you listen to your body it will tell you also. Look up a guy named Dr. Wilson. He has done alot of research in this field. You might not want to tell your General Doctor about this because they will nay say and tell you that you'll be fine. Get it checked by an eastern way now, before its too late buddy!

HOW ABOUT SEEING AN ENDOCRINOLOGIST.. SOUNDS LIKE IT MAY BE ABNORMALITY WITH YOUR PITUITARY GLAND

Sounds like hypopituitarism. if you are having an MRI, you are definately on the right path to finding out what is the cause.

Apparently, excess of sex or masterbating doesnt lead to low testosterone. :-)

Most often cause is a malfunction with the pituitary gland or some type of pituitary tumor.

But dont worry, as even in worse case scenerios such as a pituitary gland tumor. isnt as serious as perhaps a brain tumor.

and can often be treated without surgery. Also, if surgery is required, such surgery is usually more evasive than brain surgery, with most ops being performed up the nasal cavity.

However, please know that I am not a health care professional and that I am just a layman who is going through the same process as yourself.

So, please research more and talk to the experts!