Processed foods lead to weight gain, but it's about more than calories


In the first study of its kind, scientists have shown that eating ultra-processed foods leads to weight gain in human volunteers in as little as 2 weeks.


There are plenty of studies in mice linking processed foods to problems such as obesity and intestinal inflammation.


But mice are not people, as critics of such studies are quick to point out.


In humans, researchers have reported associations between processed foods and health outcomes, such as an increased risk of developing obesity, cancer, autoimmune conditions, and even death.


Yet, ultra-processed foods make up a staggering 57.9% of energy intake in the United States.


According to the NOVA food classification system, ultra-processed foods include soft drinks, packaged snacks, meat nuggets, frozen meals, and foods high in additives and low in unprocessed ingredients.

根据 NOVA 食品分类方案的说法,超加工食品包括软饮料、包装零食、肉块、冷冻食品和添加剂含量高、未加工成分含量低的食品。

"Previous studies have found correlations between ultra-processed food consumption and obesity," Kevin D. Hall, from the National Institute of Diabetes and Digestive and Kidney Diseases in Bethesda, MD, which is part of the National Institutes of Health (NIH), explained to Medical News Today.

来自美国国立卫生研究院协会下属的贝塞斯达国家糖尿病、消化和肾脏疾病研究所的医学博士 Kevin d. Hall 向《今日医学新闻》解释说:"先前的研究已经发现超加工食品的消费和肥胖之间存在相关性。"

Hall and his colleagues now present the results of a controlled clinical trial, comparing the effects of unprocessed versus ultra-processed foods on humans in the journal Cell Metabolism.