Understanding Amygdalin, “Vitamin B17,” and the Facts Behind the Claims Apple seeds have recently become a popular topic on social media, with many posts claiming they may help prevent or even treat cancer. Much of this attention centers on a naturally occurring plant compound called amygdalin , sometimes referred to as “Vitamin B17.” But how much of what you read online is supported by scientific evidence? In this article, we’ll take a balanced look at what researchers currently know about apple seeds, amygdalin, and cancer—without sensational claims or misinformation. What Is Amygdalin? Amygdalin is a naturally occurring compound found in the seeds or pits of several fruits, including: Apples Apricots Peaches Cherries Plums Bitter almonds When these seeds are crushed, chewed, or ground , amygdalin can break down and release hydrogen cyanide , a toxic substance that can be harmful if consumed in large amounts. Why Are Apple Seeds Linked to Cancer? Interest in amygdalin began dec...