Toxicology of BHA, BHT and
Ethoxyquin in dog food
Promoted kidney carcinogenesis.
Significantly increased incidence of stomach tumors.
Enhanced bladder carcinogenesis.
Enhanced stomach and urinary bladder carcinogenesis.
Causes squamous-cell carcinomas in stomachs.
(Cancers of this type are among the most lethal and fastest acting, the swiftest effects
being seen among animals with light colored fur.)
Promoted urinary bladder carcinogenesis.
Could be a promoter of thyroid carcinogenesis.
Studies have noted that BHA and other antioxidants, particularly Propyl Gallate and
ethoxyquin, showed additional effects in inducing stomach hyperplasia and cytotoxicity.
According to Dr. Wendell Belfield, DVM, practicing veterinarian
for some 26 years, both BHA and BHT are known to cause liver and kidney dysfunction and
are banned in some European countries. He adds that ethoxyquin is suspected of causing
cancer and that propylene glycol (a pet food ingredient closely related to anti-freeze)
causes destruction of red blood cells.
Ethoxyquin is listed and identified as a hazardous chemical by OSHA. It has a rating of 3
on a scale of 1 to 6, with 6 being super toxic requiring less than 7 drops to cause death.
When manufactured by Monsanto, the containers are marked with the word POISON. Monsanto
makes no representations and will not be responsible for damages of any nature whatsoever.
The Department of Agriculture lists and controls Ethoxyquin as a pesticide.