In this video, Motley Fool consumer goods analyst Blake Bos tells investors about Coca Cola's (KO 1.39%) and Pepsi's (PEP 2.26%) recent efforts to tackle the obesity epidemic in Europe and the United States, and why this may create a big opportunity for SodaStream (SODA). SodaStream has recently been gaining ground in the U.S., partially due to its positioning as the healthy alternative to traditional sodas. Blake tells us how this could strengthen the bull case for SodaStream, but also reminds us of one possible reason not to buy.