Correction, October 14, 2026: An earlier version of this article promoted apple seeds for people with cancer and included instructions for eating them. Those claims and instructions were unsupported and have been removed. We also removed related unsupported home-remedy and athletic-performance claims.
Apple seeds should not be used as a cancer remedy. There is no established clinical benefit from eating them for cancer, and they contain amygdalin, which can release cyanide. This article explains the evidence and the safety concerns.
What does the cancer evidence show?
The National Cancer Institute’s amygdalin entry states that amygdalin has not been shown to work against cancer in human clinical trials. Claims that eating apple seeds destroys cancer cells, prevents cancer from spreading, or improves treatment outcomes are not supported by that evidence.
Results involving isolated compounds or cells in a laboratory do not establish that eating a seed is safe or effective in people. Findings about eating apples also cannot be used to claim that apple seeds treat cancer.
Amygdalin and the misleading “vitamin B17” label
Amygdalin and products called laetrile are sometimes marketed as “vitamin B17.” The NCI’s reference summary on laetrile/amygdalin explains that this is not a recognized vitamin designation and that there is no evidence it functions as a vitamin in humans. The summary reports no anticancer activity in human clinical trials and describes potentially serious cyanide toxicity.
That NCI summary is retained for reference and is no longer updated. The separate NCI dictionary entry linked above also states that clinical trials have not demonstrated effectiveness. Calling a substance “natural” or a “vitamin” does not establish its safety.
Apple-seed safety
According to Poison Control’s apple-seed guidance, accidentally swallowing a few whole seeds is generally not a cause for concern. Chewing or grinding seeds breaks their protective coating and increases exposure to compounds that can release cyanide.
Remove seeds and discard the core when preparing apples. Do not deliberately chew or grind apple seeds for consumption. The previous recipes for seed butter, seed toppings, and seed tea should not be followed. Reassurance about a small accidental ingestion is not a recommendation to eat seeds daily.
If someone has swallowed apple seeds
For a large ingestion, symptoms, or uncertainty about an exposure, contact Poison Control promptly. In the United States, call 1-800-222-1222 or visit Poison.org. Outside the United States, contact your local poison center. If someone has trouble breathing, collapses, or has a seizure, call emergency services immediately.
For readers living with cancer
Do not replace or delay cancer care because of claims about apple seeds, amygdalin, or laetrile. Ask your oncology team about food, supplements, and symptom concerns. This article provides general safety information and does not prescribe cancer treatment.
