An unexpected danger from a delicious food

Lychees can be dangerous.  Quite a surprise:

For more than two decades, apparently healthy children in the Indian region of Bihar suffered sudden seizures and lost consciousness. A third of them died, leaving doctors baffled. 

But a team of American and Indian scientists say they have found the cause of the mystery illness, which killed more than 100 children a year: eating too many lychees on an empty stomach.

The research, published in medical journal The Lancet, has found lychees — particularly unripe fruits — contain an amino acid that affects blood glucose levels.

That reminds me - they must not have become very cheap this year, because we hardly seem to have had any at home.