&Quot;Immune System&Quot;

Do social media posts share the real side effects of Pfizer's COVID-19 vaccine as of January 2025? No, that's not true: The post lists 'adverse events of special interest' that researchers are required to report if they happen during drug trials, it is not a list of things that actually were observed. The most common side effects are feeling tired,…

Does nicotine eliminate brain tumors? No, that's not true: A brain cancer expert from the University of Nebraska Medical Center said nicotine doesn't help and may actually reduce a person's chances of recovering from brain tumors or cancer. Nicotine is harmful, addictive and can raise the risk of certain cancers. The claim appeared in a post and video (archived here)…

Can black pepper oil cure arthritis and rheumatism, as a post on Facebook implied? No, that's not true: There is no known cure for osteoarthritis, the most common form of arthritis, a spokesperson for the Thurston Arthritis Research Center told Lead Stories. Similarly, there is no known cure for the autoimmune disorder rheumatism. The Arthritis Foundation told Lead Stories that…

Do "parasites, metals and viruses" cause all "diseases and illnesses," as a post on TikTok claimed? No, that's not true: An infectious disease expert told Lead Stories that the "causes of human diseases are extraordinarily varied." Besides parasites and viruses, diseases can be caused by bacterial infection, genetic influences, environmental exposures and other things. As is often the case, the…

Are all disease symptoms the result of the lymphatic system expelling toxins? No, that's not true: Such claims are a "vastly oversimplified concept of how disease in humans occurs," an expert in infectious disease told Lead Stories. Several factors, including exposure to infectious agents, environmental and lifestyle conditions, and genetic predispositions, cause diseases. Though there are some lymphatic system diseases,…

Did vaccines cause an "explosion in autoimmune diseases"? No, that's not true: Only in rare cases has vaccination been associated with autoimmune diseases. Vaccines are rigorously tested for safety before being approved for use, and extensive research has shown that vaccines are not linked to an "explosion of autoimmune diseases." The claim appeared in a post and video (archived here)…

Does HIV medication weaken the immune system and worsen the condition and can the body reverse HIV/AIDS by itself? No, those claims are not true: An infectious disease expert told Lead Stories that HIV medication, known as antiretroviral therapy, strengthens the immune system by reducing viral load and helping it function better. The body cannot typically reverse HIV/AIDS by itself.…

Is COVID-19 vaccine shedding real, meaning it can spread from person to person? No, that's not true: The COVID-19 shots authorized for use in the United States do not contain the live virus and therefore cannot replicate in the body or be shed. Additionally, infectious disease experts told Lead Stories that there's no credible scientific evidence supporting the claim. The…

Did a study find that vaccination for measles, mumps and rubella (MMR) causes an increased likelihood of asthma and eczema? No, that's not true: The study authors did not come up with that conclusion. They said, "Our data suggest that currently recommended routine vaccinations are not a risk factor for asthma or eczema." The claim appeared in a post and…

Did an immunologist accidentally admit that COVID-19 vaccines were intended to sterilize humans, as a video on Instagram implied? No, that's not true: Though the post included genuine footage, it lacked context that makes clear what was meant. Dr. John Bell's comments in an interview were about "sterilizing immunity", a public health term that refers to eradicating a virus from…