Women who drink lots of coffee may cut their risk of developing one type of breast cancer, according to a new study, but experts are urging caution.
The Karolinska Institute findings are based on nearly 6,000 women and suggest drinking more than five cups a day halves a woman's risk.
But cancer experts say the evidence is not proof enough and women should instead focus on leading a healthy lifestyle to cut their cancer odds.
They say the findings need confirming.
The Swedish researchers are now doing more studies to dig deeper into the coffee question.
Their initial findings suggest that coffee cuts the risk of an aggressive form of breast cancer called oestrogen-receptor negative breast cancer.
Aggressive cancerAround one in four women diagnosed with breast cancer will have oestrogen-receptor negative breast cancer, which is often resilient to drug treatment and requires intensive chemotherapy. [Read More]