In 2007, a study showed a causal link between alcohol and breast cancer.
The finding was confirmed by other research, which showed that alcohol increases the risk of breast cancer.
However, controversy exists regarding a link between light drinking and breast cancer.
In a recent study, researchers examined the association between light drinking and breast cancer.
They showed that drinking, even at low levels, increased the risk of breast cancer.
The team summarized evidence on the biological mechanisms by which alcohol affects the risk of breast cancer.
They showed that alcohol affects breast-cancer risk through the alteration of hormone levels and the associated biological pathways.
They also found a dose-response link between drinking and the risk of breast cancer. This means the more alcohol people drink, the higher their breast cancer risk.
Finally, they showed that an estimated 144,000 breast-cancer cases and 38,000 breast-cancer deaths globally in 2012 were attributable to alcohol, with 18.8% of these cases and 17.5% of these deaths affecting women who were light drinkers.
The researchers concluded that, due to this strong link, and the amount of alcohol consumed globally, light alcohol drinking may increase the risk of breast cancer and the death rate.
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The study was published in Alcoholism: Clinical and Experimental Research and conducted by Shield KD et al.
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