Gwyneth Paltrow is known for dishing out advice to improve your health, from telling people to get stung by bees, to undergoing a vaginal steam cleanse.
But now new research has shown that even her most basic recipes might impact your health - and not in a good way.
In a new report from North Carolina State University, Professor Ben Chapman and a group of researchers analysed 29 cookbooks - including Paltrow's - and found that fewer than 9 percent of them contained proper information on safe food temperatures or cooking methods.
The main culprit was a recipe for chicken in Paltrow's 2013 cookbook It's All Good, which reportedly advises home cooks to wash raw chicken before cooking.
That goes against advice from international food standards agencies, which maintains that washing raw chicken could increase the risk of food poisoning by spreading the bacteria campylobacter.
The study also found that none of the recipes in her 2011 cookbook My Father's Daughter, including Tandoori turkey kebabs, turkey meatballs, Thai-style chicken burgers gave a safe temperature that the meat should be cooked to.
A spokesperson for Paltrow told the Independent that while the book doesn't contain endpoint temperatures, it does include the proper cooking temperature and cook time.
The 44-year-old Iron Man actress is particularly passionate about food; in 2015, she went to Capitol Hill to personally lobby for a bill that would make it mandatory to label food containing genetically modified organisms (GMOs).
Paltrow has also shared dieting advice on her website Goop.