The asparagus and cancer hoax originated in an article called Asparagus for Cancer in the December 1979 edition of Cancer News Journal, which no longer exists. It quotes a doctor with dubious claims and credentials, reports About.com.
The article claiming asparagus cures cancer went viral online in 2008, according to About.com. No peer-reviewed medical studies support the claims that asparagus prevents or cures cancer.
Asparagus has many nutritional benefits and is high in antioxidants, which may have anti-cancer properties. However, more clinical trials are necessary to study its effects, notes the National Cancer Institute. As of 2015, there is no evidence that any foods affect cancer at the cellular level, explains Snopes.com.