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Experts sound caffeine alert, possible breakthrough for breast cancer, and UK uses controversial technique for Parkinson's

A round up of the morning’s health news headlines

Drinking more than five espressos a day could be damaging to your health, according to the European Food Safety Authority (EFSA), reports the Daily Mail.

Up to 400mg a day (four cups) from a range of food and drinks with caffeine should have no consequences for healthy adults, says the EFSA, while a safe limit for pregnant women and new mothers who are breastfeeding is up to 200mg (two cups) a day.

Adults who take too much caffeine can suffer a range of health problems – from anxiety and problems sleeping to heart rhythm disturbances, according to the EFSA report which reviewed literature on the subject.

According to a report in theGuardian, the discovery of a method for blocking enzyme that spreads cancer cells to bones has been described as ‘important progress’ in the prevention of the secondary stage of breast cancer.

The enzyme lysyl oxidase, which is released from the primary tumour in the breast, produces holes in bone that provide fertile ground for the growth of metastatic cancer cells.

But the process could be blocked, at least in mice, with bisphosphonate drugs that prevent bone loss and are used to treat osteoporosis.

Finally, the Independent reveals that a patient with Parkinson’s disease in Cambridge has had brain cells donated from a foetus injected into his brain – the first person in 20 years to undergo the procedure.

Trials of the technique were abandoned in the UK after patients showed little improvement and some suffered severe side effects but since then some people who received the treatment in Sweden and the USA have experienced ‘remarkable improvements’.

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