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Researchers from King's College London and the University of Helsinki have identified a link between periodontitis (gum disease) and cryptogenic ischemic stroke, which causes a blockage in the blood vessel supplying blood to a region of the brain. The findings, recently published in the Journal of Dental Research, emphasise severe gum disease as a risk factor for young-onset stroke, particularly in patients with no other identifiable risk factors. Dr. Susanna Paju, Periodontology Specialist from the University of Helsinki, led the study in collaboration with Dr. Svetislav Zaric, Clinical Lecturer in Periodontology from King's College London. Dr. Zaric explains the implications of their research: "Stroke remains the second leading cause of death globally. Strikingly, the incidence and prevalence of ischemic stroke have been increasing in the younger population during past decades," she said. "Periodontitis, which involves deep inflammation of the gums due to bacteria under the gumline, can lead to systemic effects as bacteria enter the bloodstream and affect other parts of the body," she added.

Amid the rapid rise in semaglutide usage, a study has suggested a potential risk of a rare eye condition associated with the weight loss drug. Semaglutide, a glucagon-like peptide 1 receptor agonist (GLP-1 RA), is available under the brand name Ozempic (by Novo Nordisk) in a lower-dose form for managing type 2 diabetes mellitus (T2DM), and as Wegovy (also by Novo Nordisk) in a higher-dose form for weight management in patients with high body mass indexes. Anecdotal evidence has indicated that semaglutide might be linked to nonarteritic anterior ischemic optic neuropathy (NAION). To investigate this potential connection, researchers in the United States analysed data over a six-year period from nearly 17,000 neuro-ophthalmology patients at Massachusetts Eye and Ear Hospital in Boston, Massachusetts, all of whom had no prior history of NAION.

Stroke is a cerebrovascular syndrome that involves the blockage and bursting of blood vessels in the brain. It shows a multifactorial pattern of inheritance. High cholesterol levels, high blood pressure, hypertension and obesity are the key causes of stroke besides inherited genes.