Processed meat may raise risk of bladder cancer

Investigating the diets of 1600 people with bladder cancer and a similar number of controls, the researchers found dietary amines and haem, mainly from nitrite-treated meats, were associated with an increased risk of the malignancy, particularly in non-smokers.

Further, the researchers cautioned that vegetables high in nitrites – such as spinach, parsley and lettuce – may have an additive effect, overriding the benefits of their high antioxidant content.

Int J Cancer 2013; online 15 July