The lead in 'lead crystal' won't leach out in the time it takes to consume a glass of wine. Leaving wine, or more likely a fortified wine like port or sherry, stored for a longer period of time in a decanter or other lead crystal container will leach lead from the glass into the beverage. It's not likely to cause an immediate or severe lead poisoning, but it will increase your intake of the element. Short term use is OK, storage is not a good idea.
Robert
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