In a small kitchen, a couple in their 50s lived by one strict principle: save money whenever possible.

They worked incredibly hard, avoided alcohol and cigarettes, exercised regularly, and drank milk every single day.

Despite their healthy habits, both husband and wife were ultimately diagnosed with severe liver cancer.

It began when the husband ignored upper abdominal pain that spread directly to his right shoulder blade.

Soon, more serious warning signs appeared, including a severe loss of appetite and rapid weight loss.

Hospital tests revealed a 4 cm tumor in his liver, alongside an alarmed cancer marker (AFP) level of 500.

Shortly after his diagnosis, further medical examinations revealed his wife also had a 2 cm tumor in her liver.

Doctors investigating their eating habits discovered they had routinely bought heavily discounted milk close to its expiration date.

To save money, they stored large quantities and mistakenly believed boiling expired milk made it entirely safe again.

This dangerous habit exposed them to aflatoxin, a heat-resistant mold carcinogen linked to liver cancer that cannot be destroyed by boiling.

Additionally, expired milk harbors harmful bacteria and undergoes oxidation, creating free radicals that severely damage liver cells.

Doctors warn against overheating milk, making it too concentrated, or reheating it repeatedly, as these habits form harmful compounds.