New HHS dietary guidelines take aim at ultra-processed foods, marking dramatic policy shift from previous administration's food recommendations.

The study found higher intake of several preservatives, which are often used to extend a product's shelf-life, were linked to higher risk of cancers.

The latest recommendations suggest eating protein at every meal, highlight full-fat dairy, and advise limiting highly processed foods and added sugar. Here’s what to know.

As the Trump administration looks to create a federal definition of ultra-processed foods, the question of the best way to differentiate products within a category that can lump packaged whole-wheat bread together with soda and cheese puffs has been the subject of much debate.

"The new Dietary Guidelines for Americans (DGAs) are an opportunity to clearly explain to parents what a healthy diet for their children should look like; rich in whole, nutrient-dense foods, and low in added sugars and refined carbohydrates," Dr. Andrew Racine, president-elect of the American Academy of Pediatrics, said.

The US has unveiled a new set of dietary guidelines, encouraging Americans to eat whole foods, incorporate healthy fats, and prioritise protein-rich meals in an ongoing effort to fight the nation’s growing obesity epidemic.

Preservatives are often used in ultra processed foods such as ready meals, crisps, sugary snacks and breakfast cereals, which have already been linked to poor health by scientists

The federal government has released new dietary guidelines, introducing an emphasis on consuming meat and dairy and avoiding highly processed foods.