{"id":123281,"date":"2025-09-08T17:16:07","date_gmt":"2025-09-08T17:16:07","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/123281\/"},"modified":"2025-09-08T17:16:07","modified_gmt":"2025-09-08T17:16:07","slug":"an-expert-reveals-what-happens-if-you-eat-too-much-protein-sciencealert","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/123281\/","title":{"rendered":"An Expert Reveals What Happens if You Eat Too Much Protein : ScienceAlert"},"content":{"rendered":"<p>The <a href=\"https:\/\/www.abc.net.au\/news\/2025-05-26\/what-foods-and-recipes-are-high-in-protein\/105318830\" rel=\"nofollow noopener\" target=\"_blank\">hype around protein<\/a> intake doesn&#8217;t seem to be going away.<\/p>\n<p>Social media is full of people urging you to eat more protein, including via supplements such as protein shakes. Food companies have also started highlighting protein content on food packages to promote sales.<\/p>\n<p>But is all the extra protein giving us any benefit \u2013 and can you have too much protein?<\/p>\n<p>Protein&#8217;s important \u2013 but many eat more than they need<\/p>\n<p>Eating enough protein is important. It helps form muscle tissue, enzymes and hormones and it plays a role in immune function. It can also give you energy.<\/p>\n<p>Related: <a href=\"https:\/\/www.sciencealert.com\/does-added-protein-really-enhance-the-nutrition-of-your-food\" rel=\"nofollow noopener\" target=\"_blank\">Does Added Protein Really Enhance The Nutrition of Your Food?<\/a><\/p>\n<p>Australia&#8217;s healthy eating guidelines, penned by experts and backed by government, <a href=\"https:\/\/www.eatforhealth.gov.au\/nutrient-reference-values\/chronic-disease\/macronutrient-balance\" rel=\"nofollow noopener\" target=\"_blank\">recommend<\/a> we get 15\u201325% of our daily energy needs from protein.<\/p>\n<p>The <a href=\"https:\/\/www.eatforhealth.gov.au\/nutrient-reference-values\/nutrients\/protein\" rel=\"nofollow noopener\" target=\"_blank\">recommended daily intake<\/a> of protein for adults is 0.84 grams per kilogram of body weight for men and 0.75 grams per kilogram of body weight for women<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2025\/09\/protein_powder_brown-642x260.jpg\" alt=\"protein powder brown\" width=\"642\" height=\"260\" class=\"wp-image-173185 size-medium\"   loading=\"lazy\"\/>Too much of a good thing? (Gabriel Vergani\/EyeEm\/Getty Images)<\/p>\n<p>This is about 76 grams per day for a 90 kilogram man or 53 grams per day for a 70 kilogram woman. (It&#8217;s a bit more if you&#8217;re <a href=\"https:\/\/www.eatforhealth.gov.au\/nutrient-reference-values\/nutrients\/protein\" rel=\"nofollow noopener\" target=\"_blank\">over 70 or a child<\/a>, though).<\/p>\n<p>Most Australian adults are already eating <a href=\"https:\/\/www.abs.gov.au\/statistics\/health\/health-conditions-and-risks\/food-and-nutrients\/latest-release#data-downloads\" rel=\"nofollow noopener\" target=\"_blank\">plenty of protein<\/a>.<\/p>\n<p>Even so, many people still go out of their way to add even more protein to their diet.<\/p>\n<p>For people working to <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/28698222\/\" rel=\"nofollow noopener\" target=\"_blank\">increase muscle mass<\/a> through resistance training, such as lifting weights, a protein intake up to 1.6 grams per kilogram of body weight per day (that&#8217;s 144 grams a day for a 90 kilogram person) can help with increasing muscle strength and size.<\/p>\n<p>But <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC5867436\/\" rel=\"nofollow noopener\" target=\"_blank\">research<\/a> shows there is no additional muscle gain benefit from eating any more than that.<\/p>\n<p>For most of us, there&#8217;s no benefit in consuming protein above the recommended level.<\/p>\n<p>In fact, having too much protein can cause problems.<\/p>\n<p>What happens when I eat too much protein?<\/p>\n<p>Excess protein is not all simply excreted from the body in urine or faeces. It stays in the body and has various effects.<\/p>\n<p>Protein is a source of energy, so eating more protein means <a href=\"https:\/\/www.cambridge.org\/core\/journals\/journal-of-nutritional-science\/article\/association-between-protein-intake-diet-quality-and-obesity-in-australian-adults-a-comparison-of-measurement-units\/FFB3D60FEE631A72EFB9B5A2F3FE93D1?utm_campaign=shareaholic&amp;utm_medium=copy_link&amp;utm_source=bookmark\" rel=\"nofollow noopener\" target=\"_blank\">taking in more energy<\/a>.<\/p>\n<p>When we consume more energy than we need, our body converts any excess into fatty tissue for storage.<\/p>\n<p>There are some health conditions where excess protein intake should be avoided. For example, people with chronic kidney disease should closely monitor their protein intake, under the supervision of a dietitian, to avoid <a href=\"https:\/\/journals.lww.com\/co-clinicalnutrition\/abstract\/2017\/01000\/dietary_protein_intake_and_chronic_kidney_disease.12.aspxFollowing\" rel=\"nofollow noopener\" target=\"_blank\">damage to the kidneys<\/a>.<\/p>\n<p>There is also a condition called <a href=\"https:\/\/www.researchgate.net\/profile\/Priyanka-Verma-4\/publication\/373258761_Protein_Deficiency_and_Poisoning\/links\/64e4000740289f7a0faadd89\/Protein-Deficiency-and-Poisoning.pdf\" rel=\"nofollow noopener\" target=\"_blank\">protein poisoning<\/a>, which is where you eat too many proteins without getting enough fats, carbohydrates and other nutrients.<\/p>\n<p>It&#8217;s also known as &#8220;<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33830500\/\" rel=\"nofollow noopener\" target=\"_blank\">rabbit starvation<\/a>&#8220;, a term often <a href=\"https:\/\/www.bbc.com\/future\/article\/20180522-we-dont-need-nearly-as-much-protein-as-we-consume\" rel=\"nofollow noopener\" target=\"_blank\">linked<\/a> to early 20th century explorer Vilhjalmur Stefansson, in reference to the fact that those who subsisted on a diet of mainly rabbits (which are famously lean) quickly fell dangerously ill.<\/p>\n<p>Where you get your protein from matters<\/p>\n<p>We can get protein in our diets from plant sources (such as beans, lentils, wholegrains) and animal sources (such as eggs, dairy, meat or fish).<\/p>\n<p>A high intake of protein from animal sources has been associated with an <a href=\"https:\/\/doi.org\/10.1111\/jhn.12965\" rel=\"nofollow noopener\" target=\"_blank\">increased risk<\/a> of premature death among older Australians (especially death from  <a href=\"https:\/\/www.sciencealert.com\/cancer\" class=\"lar_link lar_link_outgoing\" data-linkid=\"73077\" data-postid=\"173173\" rel=\"nofollow noopener\" target=\"_self\">cancer<\/a>).<\/p>\n<p>High animal protein intake is also associated with <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916522046688\" rel=\"nofollow noopener\" target=\"_blank\">increased risk of type 2 diabetes<\/a>.<\/p>\n<p>On the other hand, consuming more plant sources of protein is associated with:<\/p>\n<p>Many animal sources of protein are also relatively high in fat, particularly saturated fat.<\/p>\n<p>A high intake of saturated fat contributes to increased risk of chronic diseases such as heart disease. Many Australians already eat <a href=\"https:\/\/www.eatforhealth.gov.au\/food-essentials\/fat-salt-sugars-and-alcohol\" rel=\"nofollow noopener\" target=\"_blank\">more saturated fat<\/a> than we need.<\/p>\n<p>Many plant sources of protein, however, are also sources of <a href=\"https:\/\/www.abs.gov.au\/statistics\/health\/health-conditions-and-risks\/food-and-nutrients\/latest-release#data-downloads\" rel=\"nofollow noopener\" target=\"_blank\">dietary fibre<\/a>, which most Australians don&#8217;t get enough of.<\/p>\n<p>Having more dietary fibre helps <a href=\"https:\/\/www.eatforhealth.gov.au\/nutrient-reference-values\/chronic-disease\/summary\" rel=\"nofollow noopener\" target=\"_blank\">reduce the risk of chronic diseases<\/a> (such as heart disease) and supports <a href=\"https:\/\/www.nature.com\/articles\/s41575-020-00375-4\" rel=\"nofollow noopener\" target=\"_blank\">gut health<\/a>.<\/p>\n<p>Striking a balance<\/p>\n<p>Overall, where you get protein from \u2013 and having a balance between animal and plant sources \u2013 is more important than simply just trying to add ever more protein to your diet.<\/p>\n<p>Protein, fats and carbohydrates all work together to keep your body healthy and the engine running smoothly.<\/p>\n<p>We need all of these macro nutrients, along with  <a href=\"https:\/\/www.sciencealert.com\/what-are-vitamins-and-do-we-really-need-to-take-them\" class=\"lar_link lar_link_outgoing\" data-linkid=\"73116\" data-postid=\"173173\" rel=\"nofollow noopener\" target=\"_self\">vitamins<\/a> and minerals, in the right proportions to support our health.<img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2025\/09\/1757351767_936_count.gif\" alt=\"The Conversation\" width=\"1\" height=\"1\" style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;\" referrerpolicy=\"no-referrer-when-downgrade\" loading=\"lazy\"\/>\n<\/p>\n<p><a href=\"https:\/\/theconversation.com\/profiles\/margaret-murray-1173544\" rel=\"nofollow noopener\" target=\"_blank\">Margaret Murray<\/a>, Senior Lecturer, Nutrition, <a href=\"https:\/\/theconversation.com\/institutions\/swinburne-university-of-technology-767\" rel=\"nofollow noopener\" target=\"_blank\">Swinburne University of Technology<\/a><\/p>\n<p>This article is republished from <a href=\"https:\/\/theconversation.com\" rel=\"nofollow noopener\" target=\"_blank\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/what-happens-if-i-eat-too-much-protein-261849\" rel=\"nofollow noopener\" target=\"_blank\">original article<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"The hype around protein intake doesn&#8217;t seem to be going away. Social media is full of people urging&hellip;\n","protected":false},"author":2,"featured_media":123282,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[102,6636,56,54,55],"class_list":{"0":"post-123281","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-nutrition","8":"tag-health","9":"tag-nutrition","10":"tag-uk","11":"tag-united-kingdom","12":"tag-unitedkingdom"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/123281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=123281"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/123281\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/123282"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=123281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=123281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=123281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}