Healthy Foods, Healthy Liver: How Carrots and Apples Can Help

A recent study looked at the link between eating foods high in provitamin‑A carotenoids—like carrots, sweet potatoes and oranges—and the risk of a liver condition called metabolic dysfunction‑associated steatotic liver disease (MASLD). Researchers used data from the National Health and Nutrition Examination Survey, a large survey that asks people what they ate in the past 24 hours. They then calculated each person’s United States Fatty Liver Index (USFLI); an index of 30 or higher means the person likely has MASLD. The study followed over six thousand adults, most of whom were around 51 years old and slightly more than half were women. The main question was whether people who ate more carotenoid‑rich foods had a lower chance of developing MASLD. After adjusting for age, gender, race, and other health factors, the researchers found that higher intake of these foods was linked to a 32% lower risk of MASLD. In other words, people who ate more carrots, sweet potatoes or orange‑rich foods were less likely to have fatty liver disease.

But the researchers wanted to know why this might happen, so they looked at two possible mediators: socioeconomic status (SES) and a healthy lifestyle. They grouped people into classes based on education, income, smoking habits, drinking habits and physical activity. The analysis showed that about 13% of the protective effect could be explained by SES, and about 17% by a healthy lifestyle. When the team examined subgroups, they discovered that the benefit was strongest in women and in adults younger than 45. For those groups, eating carotenoid‑rich foods cut the odds of MASLD by more than 40%. These findings suggest that adding colorful fruits and vegetables to the diet could be a practical way to lower the risk of fatty liver disease, especially for women and younger adults. The study also highlights how a person’s social background and overall habits can influence health outcomes.

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