Not really, but some. There is always risk, even though Bitcoin will very likely return a profit. There is always the possibility that something could happen, especially in the short term time range. If it is money that you cannot lose, then don't do it. If it is a good long term investment, go for it.

Playing around and trading, then go for it there too. Just do not ever put the grocery money, kids college fund or anything like that in any investment.