The 'nocebo effect' is a negative version of the placebo effect, where taking a placebo makes someone feel worse.
The study states that people can often misattribute prior negative symptoms to the placebo . Lead author Julia Haas, PhD, from the Program in Placebo Studies at Beth Israel Deaconess Medical Center,after placebos are common in clinical trials.
Researchers from Harvard Medical School and Beth Israel Deaconess Medical Center compared the rates of adverse reactions reported by people who received the vaccine versus those who received a placebo.
Though the researchers did find that more vaccine recipients reported adverse reactions, about a third of placebo recipients reported at least one adverse reaction after either dose. Headache and fatigue were the most common reactions reported by this placebo group. It's worth noting, too, that adverse reactions dipped for the placebo group after the second dose and increased for the vaccine group.
Dr. Haas says,"Collecting systematic evidence regarding these nocebo responses in vaccine trials is important for COVID-19 vaccination worldwide, especially because concern about side effects is reported to be a reason for vaccine hesitancy." ,"Most researchers argue that patients should be told less about side effects to reduce their anxiety. I think this is wrong. Honesty is the way to go."
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Valneva Shares Jump After Early Study Show Covid-19 Vaccine Effective Against OmicronI am a London-based reporter for Forbes covering breaking news. Previously, I have worked as a reporter for a specialist legal publication covering big data and as a freelance journalist and policy analyst covering science, tech and health. I have a master’s degree in Biological Natural Sciences and a master’s degree in the History and Philosophy of Science from the University of Cambridge. Follow me on Twitter theroberthart or email me at rhartforbes.com
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