Medical Specialty >> Cardiology

Doctors Lounge - Cardiology Answers

Back to Cardiology Answers List

If you think you may have a medical emergency, call your doctor or 911 immediately. Doctors Lounge (www.doctorslounge.com) does not recommend or endorse any specific tests, physicians, products, procedures, opinions, or other information that may be mentioned on the Site. 

DISCLAIMER: The information provided on www.doctorslounge.com is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. Please read our 'Terms and Conditions of Use' carefully before using this site.

Date of last update: 10/20/2017.

Forum Name: Miscellaneous Cardiology Topics

Question: Marathon Training


 jaobryan - Sun Sep 09, 2007 5:11 pm

I am a 39 year old woman and have been training for the Chicago Marathon. Recently, I have been trying to pass out. I get dizzy, feel faint, heart racing, hands numb and get shaky. I have not passed out yet, but sometimes I come very close. I also have noticed that when I get this way, I feel as if the blood has completely drained from my head. I had a physical prior to beginning to train and everything was perfect. No cholestrol problems, bp was fine, no heart problems and was not overwieght. I am in perfect health. I have lost about 15 pounds in the process but am still at a very healthy weight. Could this be low blood sugar, overtraining, fatigue or anxiety due to the impending race? Thanks for the advise.
 Dr. Chan Lowe - Sun Sep 09, 2007 8:50 pm

User avatar Hi Jaobryan,

Low blood sugar, anxiety, and fatigue can all cause episodes of fainting feelings. I would recommend you see your doctor for an evaluation to be sure nothing dangerous is going on.

Best wishes.

| Check a doctor's response to similar questions

Are you a Doctor, Pharmacist, PA or a Nurse?

Join the Doctors Lounge online medical community

  • Editorial activities: Publish, peer review, edit online articles.

  • Ask a Doctor Teams: Respond to patient questions and discuss challenging presentations with other members.

Doctors Lounge Membership Application

Tools & Services: Follow DoctorsLounge on Twitter Follow us on Twitter | RSS News | Newsletter | Contact us