{"id":78055,"date":"2024-10-01T16:13:22","date_gmt":"2024-10-01T22:13:22","guid":{"rendered":"https:\/\/www.uchealth.org\/today\/?p=78055"},"modified":"2024-10-18T08:52:36","modified_gmt":"2024-10-18T14:52:36","slug":"mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check","status":"publish","type":"post","link":"https:\/\/www.uchealth.org\/today\/mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check\/","title":{"rendered":"This diet led to better coronavirus outcomes. The immune system may be why."},"content":{"rendered":"<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div><figure id=\"attachment_78546\" aria-describedby=\"caption-attachment-78546\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-78546\" src=\"https:\/\/uchealth-wp-uploads.s3.amazonaws.com\/wp-content\/uploads\/sites\/6\/2024\/10\/17111855\/Woman-eating-a-healthy-meal-tiny.webp\" alt=\"A woman eating healthy foods. Healthy diets such as the Mediterranean diet can play a big role in overall health in addition to helping fight off disease. Researchers suspect its role in keeping inflammation in check could be why. Getty Images.\" width=\"640\" height=\"427\" \/><figcaption id=\"caption-attachment-78546\" class=\"wp-caption-text\">Healthy diets such as the Mediterranean diet can play a big role in overall health in addition to helping fight off disease. Researchers suspect its role in keeping inflammation in check could be why. Photo: Getty Images.<\/figcaption><\/figure>\n<p>A <a id=\"\" href=\"https:\/\/journals.plos.org\/plosone\/article?id=10.1371\/journal.pone.0301564\" target=\"_blank\" rel=\"noopener\">new study<\/a> has found that those who ate right had both a lower chance of contracting COVID-19 and, on average, fared better if they caught the coronavirus.<\/p>\n<p>\u201cEating right\u201d meant following a <a id=\"\" href=\"https:\/\/www.heart.org\/en\/healthy-living\/healthy-eating\/eat-smart\/nutrition-basics\/mediterranean-diet\" target=\"_blank\" rel=\"noopener\">Mediterranean diet<\/a>, and the findings add weight to years of evidence that food choices matter with more than chronic diseases such heart problems and diabetes. Diet \u2013 and, more specifically, how one\u2019s diet impacts the immune system \u2013 makes a difference in our ability to fight infectious diseases brought on by viruses and bacteria.<\/p>\n<p>The mediterranean diet is heavy on fruits, vegetables, legumes (such as lentils, peas, and beans), nuts, and olive oil. Fish, poultry, eggs, and dairy products play a lesser role, and red meat a minor one. The diet is high in good fats such as omega-3 fatty acids, and it\u2019s rich in vitamins and minerals (a.k.a. micronutrients) and antioxidants.<\/p>\n<p>The study, released in late August, was a roundup that considered five studies in five countries published from 2020 to 2023, with 55,239 total participants. Food questionnaires had established whether the participants followed a Mediterranean diet. The results, in a nutshell:<\/p>\n<ul>\n<li>Three of the five studies reported that those on Mediterranean diets to have a 5% to 25% lower risk of contracting COVID-19. Two of the other studies showed lower coronavirus risk, but the number of cases involved didn\u2019t reach the point of statistical significance.<\/li>\n<li>One of the four studies looking at the severity of coronavirus symptoms found symptoms to be lessened by 6% to 34% among Mediterranean dieters, depending on the symptom, with the other three studies also showing milder symptoms \u2013 but again, the numbers did not reach statistical significance.<\/li>\n<li>Among the three studies that considered the risk of severe COVID-19, one of them found a 77% lower risk among those on a Mediterranean diet; the other two saw 22% to 78% lower risk, but those results did not attain statistical significance.<\/li>\n<\/ul>\n<p>The authors recognized limitations of the studies they included in the review. Depending on the study, the caveats included low numbers of coronavirus infections, gender bias, the use of self-reported diet data, and other potentially influential factors including socioeconomic status, lifestyle, and preexisting health conditions.<\/p>\n<h2><strong>Chronic inflammation plays a role in many diseases<\/strong><\/h2>\n<p>Yet the overall message still resonates, and <a href=\"https:\/\/www.mdpi.com\/1660-4601\/18\/5\/2455\">other<\/a> <a id=\"\" href=\"https:\/\/journals.plos.org\/plosone\/article?id=10.1371\/journal.pone.0164220\" target=\"_blank\" rel=\"noopener\">studies<\/a> have said the same: A healthy diet can keep you from catching bugs like the coronavirus and help you subdue them if you do. Vitamin deficiency and outright malnutrition can directly affect the body\u2019s ability to fight off disease, and Mediterranean diets are rich in vitamins and supply good nutrition. But it looks like the more important factor for most people in wealthy countries is the role of diet in inflammation.<\/p>\n<p>Inflammation keeps us alive: It\u2019s our immune system\u2019s response to microscopic invaders that make us sick, and it also helps heal injuries. But inflammation becomes a problem if it smolders over time \u2013 or, worse, gets hijacked into attacking otherwise healthy tissues, which is what happens with autoimmune diseases such as rheumatoid arthritis and asthma. Recall also that the many severe coronavirus cases involved a \u201c<a id=\"\" href=\"https:\/\/virologyj.biomedcentral.com\/articles\/10.1186\/s12985-022-01814-1\" target=\"_blank\" rel=\"noopener\">cytokine storm<\/a>\u201d \u2013 an inflammation tsunami.<\/p>\n<p>The Mediterranean diet has proven to be anti-inflammatory. It lowers the expression of molecules that boost inflammation (TNF-alpha, IL-1, IL-6, and CRP among them) and reduces the body\u2019s overall level of inflammation. That, the medical community has long understood, is why those on that diet generally have fewer chronic health problems (chronic inflammation is implicated in cardiovascular disease, kidney disease, type 2 diabetes, neurodegenerative disease such as Alzheimer\u2019s, cancers, and other health problems). The connection between inflammation and infectious disease has been harder to demonstrate \u2013 particularly inflammation related to dietary habits. A global pandemic plus a diet that\u2019s prevalent in countries with hundreds of millions of people delivered enough patients to explore the question further.<\/p>\n<h2><strong>Mediterranean diet and inflammation<\/strong><\/h2>\n<p><a href=\"https:\/\/www.uchealth.org\/provider\/annie-moore-md-mba\/\">Dr. Annie Moore<\/a>, a University of Colorado School of Medicine internal medicine specialist who is board certified in obesity medicine and integrative medicine, has <a id=\"\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31179163\/\" target=\"_blank\" rel=\"noopener\">published on<\/a> anti-inflammatory diets. The body has pro-inflammatory as well as anti-inflammatory systems, and they should be in balance, she says. Those whose immune balance has tipped into inflammatory territory \u2013 diet, stress, obesity, a lack of exercise, and other factors can contribute to that \u2013 are likely more susceptible to infectious diseases.<\/p>\n<figure id=\"attachment_78071\" aria-describedby=\"caption-attachment-78071\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-78071\" src=\"https:\/\/uchealth-wp-uploads.s3.amazonaws.com\/wp-content\/uploads\/sites\/6\/2024\/09\/16104018\/Annie-Moore-MDsized.webp\" alt=\"Dr. Annie Moore\" width=\"300\" height=\"315\" \/><figcaption id=\"caption-attachment-78071\" class=\"wp-caption-text\">Dr. Annie Moore<\/figcaption><\/figure>\n<p>\u201cThe Mediterranean diet is probably one tool to keep your underlying systems in harmony with each other, and that may make you less vulnerable,\u201d Moore said.<\/p>\n<p>The challenge with changing up diets is how personally and culturally ingrained our food choices are \u2013 not to mention food business\u2019s motivation to keep highly processed foods on our shopping lists. (You don\u2019t see ads for blackberries and spinach during NFL broadcasts; it\u2019s a different story with fast food and salty snacks.) Fast food tends to be inflammatory food. We buy and cook what we know, and what we know isn\u2019t necessarily healthy, regardless of culture. Moore points out that we similarly metabolize white bread, white rice, and flour tortillas into a quick spike in blood sugar that can bring about a pro-inflammatory response.<\/p>\n<h2><strong>Incremental changes can improve your diet \u2013 and your health<\/strong><\/h2>\n<p>Switching wholesale to a Mediterranean, <a id=\"\" href=\"https:\/\/www.healthline.com\/nutrition\/plant-based-diet-guide\" target=\"_blank\" rel=\"noopener\">Whole-Foods<\/a>, or <a id=\"\" href=\"https:\/\/diabetes.org\/food-nutrition\/meal-planning\" target=\"_blank\" rel=\"noopener\">American Diabetes Association diets<\/a> is a big ask for most of us. Moore has a few suggestions for those who want to eat healthier, but perhaps want to ease into a new, healthier normal.<\/p>\n<p>There\u2019s a lack of awareness that red meat and, in particular, processed meats invite inflammation, so try to cut back on those, she suggests. Go with whole-grain breads, brown rice and whole-grain tortillas. Try an orange instead of orange juice. Skip the chips and snack on nuts instead. Potatoes\u2019 nutritional value in terms of carbs may be more than skin-deep, but the skins are rich in potassium and high in fiber. Eating seasonally \u2013 more berries in the summer, more root vegetables in the fall \u2013 can keep things interesting and lower costs. Beans offer a nice blend of protein, carbohydrates, and fiber \u2013 try adding them to your diet, she says.<\/p>\n<p>\u201cSometimes it\u2019s easier to add healthy foods than taking other foods away,\u201d Moore adds.<\/p>\n<p>The new study also offered up some ideas specific to reducing COVID-19 risk \u2013 and, probably, that of other infectious diseases.<\/p>\n<p>\u201cSeveral subtypes of food were inversely associated with COVID-19 risk. Higher olive oil consumption, lower red meat consumption, lower cereal consumption, moderate amounts of alcohol, and higher intake of fruit and nuts reduced COVID-19 risk, and higher consumption of vegetables, fruits, legumes, nuts, whole grains, and fish lowered odds of severe COVID-19,\u201d the authors reported.<\/p>\n<p>Perhaps the most important reminder here is that, just as exercise is medicine, so too is food. Paying attention to what we eat, even incrementally, can make a difference in how we feel and how well we fight off disease.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study has found that those who ate right had both a lower chance of contracting COVID-19 and, on average, fared better if they caught the coronavirus. \u201cEating right\u201d meant following a Mediterranean diet, and the findings add weight to years of evidence that food choices matter with more than chronic diseases such heart [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":78546,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[6],"tags":[4860,392,4781,551],"class_list":["post-78055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-healthy-living","tag-covid-19","tag-infection-prevention","tag-research-in-health-care","tag-weight-and-metabolism"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Mediterranean diet improves COVID-19 outcomes by keeping inflammation in check - UCHealth Today<\/title>\n<meta name=\"description\" content=\"The Mediterranean diet can play a big role in overall health in addition to helping fight off diseases that cause inflammation, like COVID-19.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.uchealth.org\/today\/mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"This diet led to better coronavirus outcomes. The immune system may be why.\" \/>\n<meta property=\"og:description\" content=\"The Mediterranean diet can play a big role in overall health in addition to helping fight off diseases that cause inflammation, like COVID-19.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.uchealth.org\/today\/mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check\/\" \/>\n<meta property=\"og:site_name\" content=\"UCHealth Today\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/uchealthorg\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-01T22:13:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-18T14:52:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uchealth-wp-uploads.s3.amazonaws.com\/wp-content\/uploads\/sites\/6\/2024\/10\/17111855\/Woman-eating-a-healthy-meal-tiny.jpg\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Todd Neff, for UCHealth\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@uchealth\" \/>\n<meta name=\"twitter:site\" content=\"@uchealth\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Todd Neff, for UCHealth\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.uchealth.org\/today\/mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.uchealth.org\/today\/mediterranean-diet-improves-covid-19-outcomes-by-keeping-inflammation-in-check\/\"},\"author\":{\"name\":\"Todd Neff, for UCHealth\",\"@id\":\"https:\/\/www.uchealth.org\/today\/#\/schema\/person\/da7733ff5562e48e55c027d111ee5911\"},\"headline\":\"This diet led to better coronavirus outcomes. 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