Apple seeds hide a dangerous secret—here's why you shouldn't eat them

Apple seeds contain a naturally occurring compound that can release toxic cyanide when digested. While eating a few by accident is unlikely to cause harm, consuming large amounts may lead to serious health risks. Experts warn that children and vulnerable individuals face higher dangers from regular exposure.

The poisonous substance in apple seeds is called amygdalin. When chewed or crushed, it breaks down into hydrogen cyanide, a dangerous chemical. An average adult would need to swallow over 100 whole seeds in a short time to reach acute poisoning levels.

Eating smaller quantities—such as those found in a few apples—is generally considered safe but not advised. However, symptoms like stomach pain, dizziness, nausea, or headaches can still occur if seeds are crushed or consumed in larger amounts. In extreme cases, very high doses could trigger seizures or unconsciousness.

Children are at greater risk due to their lower body weight and tendency to chew seeds accidentally. Regularly drinking juices or smoothies made from whole apples might also expose sensitive groups to chronic low-level cyanide over time.

Anyone worried about accidental ingestion should contact Poison Control on 800-222-1222 for advice. Medical help is recommended if symptoms of cyanide poisoning appear. While the risk from occasional seed consumption remains low, caution is advised—especially for young children and frequent juice drinkers.