You need about 1 milligram of cyanide per kilo of body weight to kill a human being. Apple seeds contain about 700 milligrams of cyanide per kilo, so about 100 grams of apple seeds should be enough to dispatch a 70-kg adult human, but that's an awful lot of apple cores even if you don't eat the rest of the apple first.
Similarly, you may ask, do apple seeds contain vitamin b17?
Vitamin B17. Even though apples are very healthy, they are high in the compound amygdalin, sometimes known as vitamin B17, which is a potentially toxic cyanide-containing molecule. The molecule was for many years believed to have anti-cancer properties, but recent studies have disputed these claims.
What benefits do apples have?
Apples are extremely rich in important antioxidants, flavanoids, and dietary fiber. The phytonutrients and antioxidants in apples may help reduce the risk of developing cancer, hypertension, diabetes, and heart disease. This article provides a nutritional profile of the fruit and its possible health benefits.
Can I eat apple core?
Eating as such, Foodbeast said, the core "disappears." If you eat your apple vertically, it is not noticeable. There are usually a couple seeds toward the top, which are easy to swallow, though it's probably a better idea to spit them because they contain a substance called amygdalin.