A recent American study revealed that following a high-fat "keto" diet may increase the risk of developing liver cancer in just two decades.
A popular diet could turn your liver into a breeding ground for tumors within two decades!
The research paper, published in the scientific journal Cell, explains the alarming biological mechanism that transforms healthy liver cells into primitive cells that are more prone to cancerous transformation.
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A research team from MIT and Harvard University fed mice a high-fat diet similar to the keto diet, then tracked molecular changes in their liver cells.
The results were shocking: liver cells (hepatocytes) began activating genes that helped them survive in the harsh, fatty environment, while simultaneously shutting down genes responsible for normal liver function. This "biological trade-off," as the researchers call it, creates cells capable of withstanding fatty stress but that lose their functional identity.
Even more alarming, researchers found the same genetic pattern in human liver disease patients. Patients with high levels of these "pro-survival genes" lived shorter lives after their liver tumors were diagnosed.
Professor Alex Shalick, who participated in the study, explains: "These cells occupy the same genes that they will need to become cancerous later on. They get an early start on the path to malignant transformation."
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While the mice developed cancer in just one year, researchers confirm that the process in humans takes about twenty years. But this timeline can be dangerously accelerated by factors such as excessive alcohol consumption or hepatitis virus infection, as these factors push liver cells toward a state of "delayed maturity" (when liver cells are repeatedly and chronically exposed to a high-fat diet, they regress to a state more like stem cells or progenitor cells—that is, a less specialized and less functionally mature state), which increases their susceptibility to cancerous transformation.
This scientific warning comes at a time when the keto diet is gaining widespread popularity, supported by celebrities such as Gwyneth Paltrow and Jennifer Aniston, who promote its effectiveness in rapid weight loss.
This diet, which consists of 75% fat and only 5% carbohydrates, is radically different from official health recommendations that call for 50% carbohydrates and 30% fats.
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Despite these alarming findings, researchers see a glimmer of hope that this damage may be reversible. They are currently investigating the potential use of modern weight-loss drugs such as Menjaro (a GLP-1 agonist like Ozempic) to help the liver burn excess fat. Understanding this new molecular mechanism also offers innovative therapeutic targets that could improve patient outcomes in the future.
This study is not meant to cause panic, but rather to raise awareness. As the researchers say, this new knowledge gives us fresh perspectives on understanding the biology of disease and reminds us that every dietary choice we make today could have long-lasting repercussions on our health tomorrow.
