There is no evidence that listermint can cause any type of tumour. Excessive alcohol intake can cause liver cirrhosis
and liver cancer
. However, if you say that your wife was diagnosed with lymphoma
, it's not likely related with alcohol intake or listermint. The cause of lymphoma is unknown: none of the factors that you mentioned, are known to cause lymphoma. Hope to have answered your query.
Portuguese Institute of Oncology, Lisbon