With reports that a key ingredient in Nutella may cause cancer, you’re probably wondering: is anything safe to eat?

The answer is yes, but you’re not going to like it. The way many Americans and people around the world eat, is literally killing them, according to a new CuriosityStream documentary on the life-saving value of eating a natural diet.

“The leading causes of death and disability are largely chronic diseases now, but 80% is completely diet and lifestyle, it’s what we expose ourselves to, what we put it our mouth,” Michael Greger, the founder of NutritionFacts.org said in the four-part series Prescription: Nutrition.

In the past few years, we’ve seen reports that many much-loved foods may have links to cancer or other life-threatening illnesses.

Most recently, palm oil, an edible oil used in a slew of different foods including Nutella, was found to contain a potentially carcinogenic contaminant.

Likewise, in 2015, the World Health Organization announced that eating processed meats like hot dogs, bacon, and ham can cause colorectal cancer, and eating red meat "probably" can cause cancer.