Breast cancer drug given to hundreds of thousands of women on the NHS affects brain function and memory | WHAT REALLY HAPPENED

Breast cancer drug given to hundreds of thousands of women on the NHS affects brain function and memory

A drug commonly given out by the NHS to breast-cancer patients may affect their brain function and memory, research suggests.

Letrozole is primarily used to treat breast cancer and was prescribed 755,866 times last year in the UK, NHS Digital statistics show.

Although Cancer Research UK states up to 30 per cent of patients experience side effects like hot flushes and fatigue, new research suggests the medication's complications may be far more serious.

When given to monkeys, the drug reduced the function of their brain cells in a region known as the hippocampus, and worsened their performance on memory tests, after just four weeks.

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