{"id":547271,"date":"2026-01-27T17:16:13","date_gmt":"2026-01-27T17:16:13","guid":{"rendered":"https:\/\/www.europesays.com\/us\/547271\/"},"modified":"2026-01-27T17:16:13","modified_gmt":"2026-01-27T17:16:13","slug":"scientists-reveal-two-day-diet-that-slashes-cholesterol-for-weeks","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/547271\/","title":{"rendered":"Scientists Reveal Two-Day Diet That Slashes Cholesterol for Weeks"},"content":{"rendered":"

Scientists have revealed a\u00a0simple yet effective\u00a0diet<\/a>\u00a0that\u00a0keeps cholesterol<\/a> levels in check.\u00a0<\/p>\n

According to researchers at the University of Bonn, just two days of eating\u00a0an almost exclusively oatmeal-based diet\u00a0significantly lowered harmful cholesterol levels, with benefits still visible six weeks later.\u00a0<\/p>\n

The findings, published in the journal\u00a0Nature Communications, come from a controlled trial involving people with metabolic syndrome\u2014a common cluster of risk factors that includes excess weight, high blood pressure, elevated blood sugar and unhealthy cholesterol levels<\/a>. <\/p>\n

While none of the participants had diabetes, all were considered at increased risk for developing it.\u00a0<\/p>\n

For two days, one group followed a strict but straightforward plan: oatmeal, three times a day. The oats were boiled in water, with\u00a0the addition of small amounts\u00a0of fruit or vegetables allowed.\u00a0<\/p>\n

Participants ate about 300 grams of oatmeal per day and consumed\u00a0roughly half\u00a0their usual calories.\u00a0A control\u00a0group also reduced calories but did not eat oats.\u00a0<\/p>\n

Both groups saw some health improvements, but the oatmeal group stood out. Their levels of LDL cholesterol\u2014the type most strongly linked to heart disease\u2014dropped by around 10 percent in just\u00a048 hours.\u00a0\u00a0<\/p>\n

On average, they also lost about two kilograms (roughly four\u00a0and a half pounds), and their blood pressure dipped slightly. Crucially,\u00a0the\u00a0cholesterol improvement<\/a>\u00a0didn\u2019t\u00a0vanish once normal eating resumed. Six weeks later, the lower LDL levels\u00a0largely held\u00a0steady.\u00a0<\/p>\n

\"\"<\/p>\n

\u201cThat is a substantial reduction,\u201d\u00a0said paper author and nutrition and microbiota professor Marie-Christine Simon of the University of Bonn, Germany, in a statement. While the effect\u00a0is not\u00a0as strong as what modern cholesterol-lowering drugs can achieve, she noted that\u00a0it is\u00a0still impressive given the simplicity and short duration of the oat-based intervention.\u00a0<\/p>\n

High LDL cholesterol is dangerous because it can build up in blood vessel walls, forming plaques that narrow arteries. If those plaques rupture, they can trigger blood clots, heart\u00a0attacks\u00a0or strokes. Even modest reductions in LDL can lower long-term cardiovascular risk.\u00a0<\/p>\n

The benefits of the two-day oat-rich diet were demonstrated specifically in people with metabolic syndrome, meaning the effect is yet be demonstated in healthy individuals.<\/p>\n

However, Simon said the cholesterol-lowering mechanism itself is likely not unique to this population. The drop in LDL cholesterol was closely linked to compounds produced when gut microbes break down oats\u2014particularly ferulic acid-related metabolites\u2014a process that occurs in most people, though with varying efficiency, she explained.<\/p>\n

“This indicates that the observed effects are\u00a0mechanistically general, but\u00a0their magnitude may differ across populations,” Simon told Newsweek.<\/p>\n

“Individuals with metabolic syndrome may experience more pronounced improvements because they typically have elevated baseline cholesterol levels and altered metabolic regulation, leaving greater room for measurable improvement.”<\/p>\n

Further studies in healthy people and other metabolic conditions are needed to determine how widely the benefits apply and who stands to gain the most, she added. <\/p>\n

So how can two days of oatmeal have such a lasting impact? The answer appears to lie in the gut.\u00a0The researchers found that the\u00a0oat-heavy diet<\/a>\u00a0changed the makeup of participants\u2019 gut bacteria.\u00a0\u00a0<\/p>\n

\u201cWe were able to identify that the consumption of oatmeal increased the number of certain bacteria in the gut,\u201d explained paper author Linda\u00a0Kl\u00fcmpen, also of the University of Bonn, in a statement.\u00a0<\/p>\n

These bacteria, the researchers explain, release metabolic by-products into their environment, providing energy to gut cells and supporting their function.\u00a0<\/p>\n

One of these substances, formed when bacteria break down components of oats, has previously been linked to healthier cholesterol metabolism. At the same time, other gut bacteria helped reduce compounds associated with insulin resistance, a key driver of type 2 diabetes.\u00a0<\/p>\n

Interestingly, the researchers also tested a gentler approach: eating a smaller amount of oats\u2014about 80 grams per day\u2014over six weeks, without cutting calories.\u00a0\u00a0<\/p>\n

That strategy led to only minor improvements. The results suggest that a short, intensive oat \u201creset,\u201d paired with temporary calorie reduction, may be more effective than sprinkling\u00a0small amounts\u00a0of oats into an otherwise unchanged diet.\u00a0<\/p>\n

The researchers\u00a0warned\u00a0that oatmeal\u00a0is not\u00a0a replacement for medication or medical advice.\u00a0\u00a0<\/p>\n

\u201cAs a next step, it can now be clarified whether an intensive oat-based diet repeated every six weeks actually has a permanently preventative effect,\u201d Dr. Simon said.\u00a0<\/p>\n

Do you have a tip on a health story that\u00a0Newsweek\u00a0should be covering? Do you have a question about cholesterol? Let us know via\u00a0<\/strong>health@newsweek.com<\/strong><\/a>.<\/strong><\/p>\n

Reference<\/p>\n

Kl\u00fcmpen, L., Mantri, A., Philipps, M., Seel, W., Schlautmann, L., Yaghmour, M. H., Wiemann, V., Stoffel-Wagner, B., Coenen, M., Weinhold, L., Hasenauer, J., Flie\u00dfwasser, T., Burgdorf, S., Thiele, C., Stehle, P., & Simon, M.-C. (2026). Cholesterol-lowering effects of oats induced by microbially produced phenolic metabolites in metabolic syndrome: A randomized controlled trial. Nature Communications, 17(1), 598. https:\/\/doi.org\/10.1038\/s41467-026-68303-9<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Scientists have revealed a\u00a0simple yet effective\u00a0diet\u00a0that\u00a0keeps cholesterol levels in check.\u00a0 According to researchers at the University of Bonn,…\n","protected":false},"author":3,"featured_media":547272,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[22104,1265,2509,210,10359,24295,1182,240576,67,132,68],"class_list":{"0":"post-547271","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-nutrition","8":"tag-cholesterol","9":"tag-diet","10":"tag-diet-and-nutrition","11":"tag-health","12":"tag-health-and-medicine","13":"tag-metabolic-health","14":"tag-nutrition","15":"tag-oatmeal","16":"tag-united-states","17":"tag-unitedstates","18":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/115968199361256975","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/547271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=547271"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/547271\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/547272"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=547271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=547271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=547271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}