Immune Systems Advisor

Updated September 9, 2026 • Evidence Review “Turbo cancer” is not a formal medical diagnosis. But the phenomenon behind the phrase raises several legitimate scientific questions: Are more cancers occurring in younger adults? Are some cancers becoming more aggressive or being diagnosed at more advanced stages? Can tumors occasionally accelerate dramatically? And is there credible evidence that COVID-19 infection or vaccination contributes to cancer progression in some susceptible individuals? The evidence is more complicated than either extreme. Early-onset cancer is a documented epidemiologic trend. Rapidly progressive cancer is a real clinical phenomenon. Hyperprogressive disease is a recognized, although still controversial, pattern associated particularly with immune-checkpoint therapy. At the same time, there is currently insufficient evidence to conclude that COVID-19 vaccination causes a distinct “turbo cancer” syndrome. Important update: A September 3, 2026...

Evidence Review • Oral Health • Microbiome Mouthwash can reduce plaque, gingivitis, bad breath and tooth decay—but some antimicrobial formulations also alter the oral microbiome. What does the evidence really tell us about chlorhexidine, nitric oxide, blood pressure, diabetes and long-term health? Quick Answer Mouthwash is neither universally harmful nor universally necessary. Therapeutic mouthrinses can provide meaningful dental benefits, particularly for people with gingivitis, plaque, elevated cavity risk or specific dental conditions. However, antimicrobial rinses can also alter the oral microbial ecosystem. The important distinction is between demonstrated dental benefits and hypotheses about long-term systemic effects . Current evidence does not establish that routine mouthwash use causes hypertension, diabetes, cardiovascular disease or Alzheimer's disease. Evidence status: ...

Medically reviewed by: OneDayMD Editorial Team | Last updated: August 2026 Introduction The rapid development and deployment of COVID-19 vaccines have been monumental in combating the global pandemic, saving countless lives and enabling societies to regain a sense of normalcy. Central to the efficacy of many of these vaccines, particularly mRNA and viral vector-based ones, is the spike protein—a key component of the SARS-CoV-2 virus that facilitates its entry into human cells. By instructing the body to produce a version of this protein, vaccines train the immune system to recognize and neutralize the virus without causing illness. However, as vaccination campaigns expanded, so did public curiosity and concern about the spike protein's role, fueled by a mix of scientific complexity, misinformation, and distrust. For years, the public was told that COVID-19 mRNA vaccine components degraded rapidly—within days to weeks. Hulscher, McCullough, and colleagues' ...