{"id":117846,"date":"2026-10-03T20:04:33","date_gmt":"2026-10-04T00:04:33","guid":{"rendered":"https:\/\/bgodinspired.com\/?p=117846"},"modified":"2026-10-03T20:04:33","modified_gmt":"2026-10-04T00:04:33","slug":"what-is-the-nocebo-effect","status":"publish","type":"post","link":"https:\/\/bgodinspired.com\/index.php\/health-and-wellness\/what-is-the-nocebo-effect\/","title":{"rendered":"What Is the Nocebo Effect? When a Dummy Pill Hurts"},"content":{"rendered":"<div class='booster-block booster-read-block'>\n                <div class=\"twp-read-time\">\n                \t<i class=\"booster-icon twp-clock\"><\/i> <span>Read Time:<\/span>9 Minute, 14 Second                <\/div>\n\n            <\/div><p>You read the leaflet that came with a new medicine. Headache. Tiredness. Sore muscles. A few days later, your muscles ache.<\/p>\n\n<p>Was it the medicine? Maybe. But there is another thing it could be, and it has a strange name. It is called the nocebo effect.<\/p>\n\n<p>The nocebo effect is when expecting harm makes you feel harm. It is the dark twin of the placebo effect. And it is not &#8220;all in your head&#8221; in the way people usually mean that. The aches are real. What sets them off is the expectation.<\/p>\n\n<h2>What is the nocebo effect?<\/h2>\n\n<p>The nocebo effect happens when a person expects something to hurt them, and then they really do feel worse, even though the thing itself could not have done it. A sugar pill. A harmless injection. A treatment that was never switched on.<\/p>\n\n<p>The word was made up in 1961 by a doctor named Walter Kennedy. &#8220;Placebo&#8221; is Latin for &#8220;I will please.&#8221; Kennedy picked &#8220;nocebo,&#8221; which means &#8220;I will harm.&#8221; He made one point very clearly. The harm does not live in the pill. It lives in the person&#8217;s response to it. A sugar pill has nothing in it to hurt you. Your expectation does the work.<\/p>\n\n<p>That does not mean you are weak, or silly, or making it up. Your brain is always guessing what comes next and getting your body ready for it. When it expects pain, it can turn up the volume on pain. That is a body doing its job a little too well.<\/p>\n\n<div class=\"convertkit-form wp-block-convertkit-form\" style=\"\"><script async data-uid=\"c87e3ed518\" src=\"https:\/\/bgodinspired.kit.com\/c87e3ed518\/index.js\" data-jetpack-boost=\"ignore\" data-no-defer=\"1\" data-no-optimize=\"1\" nowprocket><\/script><\/div>\n\n\n<h2>The nocebo effect in a real trial: the dummy pills that hurt<\/h2>\n\n<p>The clearest test of the nocebo effect came from doctors at Imperial College London. Their study was called SAMSON, and the results were printed in the New England Journal of Medicine in 2020.<\/p>\n\n<p>They found 60 people who had stopped taking statins, a common heart medicine, because of side effects. All of them had stopped within two weeks of starting. Aches and tiredness are the usual complaints.<\/p>\n\n<p>Each person got 12 bottles, one for each month of a year:<\/p>\n\n<ul>\n<li>4 bottles held a real statin.<\/li>\n<li>4 bottles held dummy pills that looked the same.<\/li>\n<li>4 bottles were empty.<\/li>\n<\/ul>\n\n<p>Nobody knew whether a full bottle held the real statin or the dummy pill. Every day, each person scored how bad they felt on a phone app.<\/p>\n\n<p>Here is what they found. Roughly 90% of the bad feeling people had on the real statin also showed up when they took the dummy pill. On average, people scored their symptoms at 16.3 on statin months and 15.4 on dummy-pill months. That is almost the same. You can read the British Heart Foundation&#8217;s <a href=\"https:\/\/www.bhf.org.uk\/what-we-do\/news-from-the-bhf\/news-archive\/2020\/november\/no-difference-in-side-effects-with-a-statin-or-dummy-pill\" target=\"_blank\" rel=\"noopener\">summary of the SAMSON results<\/a>.<\/p>\n\n<h2>The empty bottle months<\/h2>\n\n<p>Most people stop reading there. But the most interesting number in the study is the third one.<\/p>\n\n<p>In the months with an empty bottle, when people took no pill at all, the average score was 8.0.<\/p>\n\n<p>Look at that again. No pill: 8.0. A dummy pill with nothing in it: 15.4. Just the act of swallowing a tablet every morning nearly doubled how bad people felt.<\/p>\n\n<p>And here is the part that matters most. Those people were not lying. They felt it. Some of them had to stop the dummy pills for a while because they felt so bad, just like they did on the real ones.<\/p>\n\n<p>Then the doctors did something kind. They showed each person their own chart. Here is your statin month. Here is your dummy-pill month. Here is your no-pill month. About half of them went back on the medicine after that, and stayed on it six months later. Nobody told them to toughen up. They simply saw the truth about their own body, and the fear loosened.<\/p>\n\n<p>Interestingly, the opposite works too. On this site we wrote about a small study where <a href=\"https:\/\/bgodinspired.com\/index.php\/health-and-wellness\/coffee-and-stress-decaf-study\/\">decaf coffee eased stress just like regular coffee<\/a>. Expectation can lift us as well as weigh us down.<\/p>\n\n<h2>What makes the nocebo effect stronger<\/h2>\n\n<p>Researchers point to a few things that feed it:<\/p>\n\n<ul>\n<li><strong>Long lists of warnings.<\/strong> Reading every possible side effect can plant the very feelings it lists.<\/li>\n<li><strong>Bad past experiences.<\/strong> If a pill made you sick once, your body may brace for it next time.<\/li>\n<li><strong>Worry in general.<\/strong> People who feel anxious tend to notice more aches and twinges.<\/li>\n<li><strong>Scary stories.<\/strong> A friend&#8217;s bad experience, or a frightening post online, can shape what you expect.<\/li>\n<li><strong>Paying close attention.<\/strong> Everyone has small aches every day. Watching for them makes them louder.<\/li>\n<\/ul>\n\n<h2>Free ways to turn down the nocebo effect<\/h2>\n\n<p>This article is general information, not medical advice. Please do not stop or change a medicine without talking to a doctor, nurse or pharmacist if you can. And please always report side effects. Some are real, and some are serious. The point is not to ignore your body. It is to give it fair information.<\/p>\n\n<ul>\n<li><strong>Ask what is common.<\/strong> Ask how many people actually get a side effect, not just whether it is possible. &#8220;Rare&#8221; and &#8220;listed&#8221; are very different words.<\/li>\n<li><strong>Keep a simple diary.<\/strong> Write down how you feel each day, before and after starting something new. Like the SAMSON charts, real numbers can calm a guess.<\/li>\n<li><strong>Notice the normal.<\/strong> Tiredness, a headache, a stiff back. Many of these were there last week, too.<\/li>\n<li><strong>Breathe before you read.<\/strong> If a leaflet makes your heart race, put it down, take a few slow breaths, and read it again with someone else.<\/li>\n<li><strong>Check your worry level.<\/strong> If you feel on edge much of the time, this free two-minute check may help you see it more clearly: <a href=\"https:\/\/bgodinspired.com\/index.php\/how-anxious-am-i\/\">How Anxious Am I?<\/a><\/li>\n<\/ul>\n\n<h2>A very old sentence about fear<\/h2>\n\n<p>There is an old book about a man named Job. He loses almost everything in a short time. Sitting in the ashes, he says something that anyone who has ever braced for bad news will know:<\/p>\n\n<blockquote><p>For the thing which I greatly feared is come upon me, and that which I was afraid of is come unto me.<\/p><\/blockquote>\n\n<p>People sometimes use that line to say your fears make bad things happen. If you are afraid of it, you will bring it on yourself. That sounds a lot like the nocebo effect.<\/p>\n\n<p>But the book itself says no. It opens by calling Job a good man. His friends spend most of the book telling him his trouble must be his own fault. At the end, it is the friends who are told they got it wrong.<\/p>\n\n<p>I did not expect that from an old book, but it lines up with the science. Fear really can make you feel worse. It can turn up the ache and run ahead of the harm. But feeling afraid is not a failure. And it is not a curse you put on yourself. The people in SAMSON did not need blame. They needed someone to sit down with them and show them the truth.<\/p>\n\n<p>Maybe that is why &#8220;do not be afraid&#8221; turns up again and again in the oldest stories of God. It does not sound like a scolding. It sounds like mercy for bodies that were built to brace. Someone who knows how fear works, saying gently: you can put this down.<\/p>\n\n<div class=\"bgi-hero-block\" style=\"border:1px solid #e5e5e5;border-radius:8px;padding:20px 24px;margin:28px 0;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;font-size:0.9em;color:#666;\">A good place to start:<\/p>\n<p style=\"margin:0 0 8px 0;font-size:1.15em;\"><strong>The Beginner&#8217;s Guide to Feeling God&#8217;s Presence Every Day<\/strong><\/p>\n<p style=\"margin:0 0 10px 0;\">A simple guide to noticing God in the ordinary moments of a day, even when life feels chaotic.<\/p>\n<p style=\"margin:0;\"><a href=\"https:\/\/bgodinspired.com\/index.php\/free-video-course-feeling-gods-presence\/?utm_source=wordpress&amp;utm_medium=article-inline&amp;utm_content=hero\">Get the free guide<\/a><\/p>\n<p style=\"margin:6px 0 0 0;color:#666;\">Free.<\/p>\n<\/div>\n\n<p>So the next time you read a long list of warnings and feel your shoulders tighten, try this. Take a slow breath. Ask what is common. Write down how you really feel. Give your body fair information, and give yourself some grace.<\/p>\n\n<p>Your body is listening to what you expect. That is the strange news. The good news is that it can also learn to expect something better.<\/p>\n\n<h2>Discussion question<\/h2>\n\n<p>Should medicine leaflets keep listing every possible side effect, even if the list itself can make some people feel worse? Or would you rather know everything? Tell us what you think in the comments.<\/p>\n\n<div class=\"convertkit-form wp-block-convertkit-form\" style=\"\"><script async data-uid=\"c87e3ed518\" src=\"https:\/\/bgodinspired.kit.com\/c87e3ed518\/index.js\" data-jetpack-boost=\"ignore\" data-no-defer=\"1\" data-no-optimize=\"1\" nowprocket><\/script><\/div>\n\n\n<h2>Share this<\/h2>\n\n<p>In one study, people who took dummy pills felt almost as bad as people on the real medicine. When they took no pill at all, they felt about half as bad. That is the nocebo effect. https:\/\/bgodinspired.com\/?p=117846<\/p>\n\n<p>I did not know this: expecting harm can make you feel real harm, even from a sugar pill. It is not weakness and it is not &#8220;all in your head.&#8221; It is your body bracing. https:\/\/bgodinspired.com\/?p=117846<\/p>\n\n<p>&#8220;Feeling afraid is not a failure, and it is not a curse you put on yourself.&#8221; A gentle read on the nocebo effect for anyone who worries about side effects. https:\/\/bgodinspired.com\/?p=117846<\/p>\n\n<h2>Questions and answers about the nocebo effect<\/h2>\n\n<h3>What is the nocebo effect?<\/h3>\n<p>The nocebo effect is when a person feels real negative symptoms, such as pain, tiredness or nausea, because they expect something to harm them, even though the thing itself could not cause those symptoms. It is the opposite of the placebo effect. The word &#8220;nocebo&#8221; comes from Latin for &#8220;I will harm&#8221; and was first used by the doctor Walter Kennedy in 1961.<\/p>\n\n<h3>What is the difference between the placebo and nocebo effect?<\/h3>\n<p>The placebo effect is when expecting something to help makes a person feel better. The nocebo effect is when expecting something to hurt makes a person feel worse. In both cases, the treatment itself is not causing the change. The person&#8217;s expectation shapes what the body feels.<\/p>\n\n<h3>Is the nocebo effect real or all in your head?<\/h3>\n<p>The nocebo effect is real. The symptoms people feel are genuine, not made up. In the SAMSON trial, published in the New England Journal of Medicine in 2020, people scored their symptoms at 15.4 on average while taking dummy pills, compared with 8.0 while taking no pill at all, and 16.3 while taking a real statin. The expectation is in the mind, but the discomfort is felt in the body.<\/p>\n\n<h3>What did the SAMSON statin study find about side effects?<\/h3>\n<p>The SAMSON study at Imperial College London gave 60 people who had stopped statins because of side effects a year of monthly bottles: four with a statin, four with identical dummy pills and four empty. About 90% of the symptoms people felt on the statin also appeared on the dummy pills. After seeing their own results, about half of the participants went back on statins.<\/p>\n\n<h3>How can you reduce the nocebo effect?<\/h3>\n<p>To reduce the nocebo effect, ask a doctor or pharmacist how common a side effect really is, not just whether it is possible. Keep a simple daily diary of how you feel before and after starting a new medicine. Remember that small aches and tiredness are common even without any medicine. Never stop a medicine without medical advice, and always report side effects, because some side effects are real and need attention.<\/p>        <div class=\"booster-block booster-reactions-block\">\n            <div class=\"twp-reactions-icons\">\n                \n                <div class=\"twp-reacts-wrap\">\n                    <a react-data=\"be-react-1\" post-id=\"117846\" class=\"be-face-icons un-reacted\" href=\"javascript:void(0)\">\n                        <img decoding=\"async\" src=\"https:\/\/bgodinspired.com\/wp-content\/plugins\/booster-extension\/\/assets\/icon\/happy.svg\" alt=\"Happy\" title=\"\">\n                    <\/a>\n                    <div class=\"twp-reaction-title\">\n                        Happy                    <\/div>\n                    <div class=\"twp-count-percent\">\n                                                    <span style=\"display: none;\" class=\"twp-react-count\">0<\/span>\n                        \n                                 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Expecting harm can make you feel it. In one trial, dummy pills caused about 90% of the aches blamed on a real medicine. Here is why.<\/p>\n","protected":false},"author":1,"featured_media":117845,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_wp_convertkit_post_meta":{"form":"-1","landing_page":"0","tag":"0","restrict_content":"0"},"footnotes":""},"categories":[3711,3715],"tags":[],"class_list":["post-117846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health-and-wellness","category-personal-growth-and-life-skills"],"_links":{"self":[{"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/posts\/117846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/comments?post=117846"}],"version-history":[{"count":2,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/posts\/117846\/revisions"}],"predecessor-version":[{"id":117848,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/posts\/117846\/revisions\/117848"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/media\/117845"}],"wp:attachment":[{"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/media?parent=117846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/categories?post=117846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bgodinspired.com\/index.php\/wp-json\/wp\/v2\/tags?post=117846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}