Hillary Clinton's doctor gives her clean bill of health after 2012 concussion but says she's still on blood-thinners for a clot in her head and takes thyroid pills every day

• Clinton, 67, is 'fit to serve' but remains on Coumadin, a blood-thinning medicine, following three separate clot diagnoses since 1998
• The most recent clot – or 'thrombosis' – turned up in her sinuses 2013 when doctors followed up after a concussion
• Hillary suffers from hypothyroidism, a deficit of thyroid hormone caused by an underactive gland
• Her doctor's prescription of choice, ArmourThyroid, is an alternative treatment produced from dried and crushed pig thyroid glands
• Concussion that followed a fainting spell during travel in December 2012 has been resolved and she no longer sees double 

By David Martosko, Us Political Editor For Dailymail.com

Published: 14:10 EST, 31 July 2015 | Updated: 17:07 EST, 31 July 2015

Democratic presidential front-runner Hillary Clinton is fit enough to serve in the White House, according to her doctor, who issued a health-summary on Tuesday that her campaign will use to counter claims about the candidate's age and a recent history of health scares.

The Clinton camp published the document Friday as the State Department released the latest batch of documents related to the former diplomat's long-simmering email controversy.

Along with ordinary vital signs and a recent medical history, Dr. Lisa Bardack of Mount Kisco, N.Y. wrote that Clinton, 67, suffers no long-term effects from a December 2012 concussion that left her seeing double for two months.

But in the course of treating that condition, Bardock added, doctors diagnosed a blood clot in the former senator and first lady's sinuses, requiring long-term daily doses of Coumadin, a compound that thins the blood.

Scroll down for video 

HEALTHY AS A HORSE: Hillary Clinton, 67, is prone to blood clots and needs daily thyroid pills but is otherwise healthy, her doctor says

FRESNEL LENSES: Clinton testified before a Senate committee in 2013 while wearing special glasses designed to correct her double vision after she fained and suffered a concussion

The 'transverse sinus venous thrombosis,' if left untreated, can grow break loose, travel through the bloodstream and lodge in the lungs – blocking blood flow and potentially causing death.

Clinton's concussion became the stuff of conspiracy theories because it came the same week when she was originally scheduled to testify before a congresional committee about the terror attack in Benghazi, Libya just three months earlier. 

The New York Post called her concussion a 'head fake.'

Pundit Allen West, then a Florida congressman, said Clinton had a case of the 'Benghazi flu.' Fox News contributer Charles Krauthammer called it an 'acute Benghazi allergy.' 

But Clinton was rushed to New York Presbyterian Hospital on December 30, 2012 when the cranial clot was first noted by a physician during a followup.

A day later, her doctor released a statement describing the location of the clot as in 'the vein that is situated in the space between the brain and the skull behind the right ear.'

The clot 'did not result in a stroke, or neurological damage,' the statement continued.

Clinton left the hospital on January 2, 2013 and returned to work five days later, but did not appear before Congress until the following month, leading some Republicans to speculate about the timing and seriousness of her hospitalization.

Bardack wrote this week that Clinton had been diagnosed with two previous blood clots, in 1998 and 2009.

'She had follow-up testing in 2013, which revealed complete resolution of the effects of the concussion as well as total dissolution of the thrombosis [clot],' according to the doctor.

'Mrs. Clinton also tested negative for all clotting disorders. As a precaution, however, it was decided to continue her on daily anticoagulation.' 

Overall, Bardack determined, 'she is in excellent physical condition and fit to serve as president of the United States.'  

She also noted that Clinton suffers from seasonal allergies and hypothyroidism, an imbalance of thyroid hormones that can be corrected with a daily pill.

Her prescription is for Armour Thyroid, an alternative to the more typical Synthroid medication that some holistic physicians prefer because it is produced from dried pig thyroid glands instead of being synthesized in a laboratory.

The pill is known mostly for its pungent odor. 

Separately, Bardack confirmed that Clinton had worn specialized eyeglasses during the months after her concussion, because she was seeing double.

Dr. Lisa R. Bardack is Hillary Clinton's doctor, and wrote a sumary of the 67-year-old former secretary of state's health conditions for her presidential campaign to share with reporters and the public

'Mrs. Clinton ... benefited from wearing glasses with a Fresnel Prism,' she wrote. 'Her concussion symptoms, including the double vision, resolved within two months and she discontinued the use of the prism.'

Bardack reported that Clinton 'does not smoke and drinks alcohol occasionally. She does not use illicit drugs or tobacco products.'

'Her cancer screening evaluations are all negative,' the doctor wrote. 'She is in excellent physical condition and fit to serve as President of the United States.' 

'Her most recent physical examination on March 21, 2015 revealed a healthy-appearing female. Her vital signs showed blood pressure 100/65, heart rate 72, respiratory rate 18 and temperature 98.7.'

'The remainder of her physical examination was normal,' she said. 'Laboratory testing revealed a normal EKG and normal laboratory testing, including cholesterol of 195, with an LDL of 118, HDL of 64 and triglycerides of 69.'

Bill Clinton dismisses concerns over Hillary's health in 2014