Good oral health may help protect against Alzheimer’s


Good oral health may help protect against Alzheimer’s


Gingivitis (gum disease) has previously been linked to a higher risk of heart disease, but a study published in January 2019 has revealed that the bacteria that cause gingivitis may also be connected to Alzheimer's disease. 

Scientists have previously discovered that that particular species of bacteria, Porphyromonas gingivalis, is capable of moving from the mouth to the brain. Once the bacteria are in the brain, they release enzymes known as gingipains. These enzymes can destroy nerve cells, which in turn can lead to memory loss, and eventually Alzheimer's. 

In the 2019 study, the researchers looked for evidence of this process within human brains. They examined the brains of 53 deceased people who had been diagnosed with Alzheimer's, and discovered high levels of gingipain in almost all of them. They also found that the amount of gingipain tended to rise over time, which suggests there could be a tipping point where dementia symptoms start.

The next step in this area of research is to see if a drug can be used to block the gingipain and possibly slow the progression of Alzheimer's or even stop it from developing. 

Until then, it is advisable to continue keeping up with strong oral health habits, including daily flossing, brushing twice a day, and getting regular dental check-ups.


In 1654, Rembrandt painted a picture of his mistress entitled “Bathsheba at her bath”. Over 300 years later, an Italian physician viewed the painting and noticed several characteristics of the left breast indicative of breast cancer. This title underlies James S. Olson’s book: Bathsheba’s breast: women, cancer & history, in which he examines breast cancer throughout history.

In 2019, an estimated 268,000 cases of invasive breast cancer will be diagnosed in women. But each year about 1 percent of all breast cancer cases will appear in men too — which works out to around 2,000 new cases. Male breast cancer is now more common than it was 25 years ago but a solemn fact remains: Experts simply don’t know the best way to treat breast cancer in men.

William G. Kaelin, MD, of Harvard University, Boston, Massachusetts, Gregg L. Semenza, MD, PhD, of Johns Hopkins University in Baltimore, Maryland, and Sir Peter J. Ratcliffe, FMedSci, of Oxford University in the United Kingdom have been awarded the 2019 Nobel Prize in Physiology or Medicine for their discoveries on how cells sense oxygen and adapt to it.

In its second edition, the International Journal of Disease Reversal and Prevention has published a breadth of new evidence suggesting among other things, that whole food plant-based nutrition may positively impact pulmonary hypertension, reverse type 2 diabetes, reverse blindness related to diabetic retinopathy and even improve sexual function in women.

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