A new warning tonight for breast cancer patients and dairy products.
Researchers say women who consumed one or more daily servings of high fat dairy had a 49% increased risk of dying from the disease.
They were also 64% more likely to die from any cause.
Dairy is a problem for breast cancer patients because these products contain higher levels of estrogen ... which comes from the milk of pregnant cows.
Estrogen exposure is strongly linked to breast cancer.
Breast cancer patients should avoid whole milk, ice cream, custard, full fat cheeses, yogurt.