Are All Fruits Healthy? Harvard Study Reveals Surprising Risks of 3 Popular Fruits

We often assume that all fruits are inherently good for our health, but a study from Harvard University challenges that belief, highlighting three specific fruits that may be harmful when consumed in excess.

Dr. Nick Norwitz, a metabolic health researcher at Harvard, explains that mangoes, grapes, and jackfruit contain significantly higher levels of fructose compared to many other fruits. “The fructose in these fruits can overburden the liver and contribute to fat buildup in the body,” Norwitz said in an interview with Fox News. He added that overconsumption of this natural sugar may also cause digestive issues and increase the risk of weight gain.

The research found that a medium-sized mango contains approximately 30 grams of fructose, a small bunch of grapes holds around 23 grams, and jackfruit contains particularly high amounts of natural sugar. “The idea that all fruits are equally healthy is a myth. It’s important to pay attention to fruits with high fructose content and consume them in moderation,” Norwitz advised.

To be clear, the research does not recommend completely avoiding these fruits, but eating them in sensible amounts. “Each person reacts differently to various foods, so the best advice is to listen to your body and find the right balance,” he concluded.

Whether you're a fruit lover or a strict healthy eater, moderation is key.