According to the Federal Reserve Bank of St. Louis, the Fed has more than doubled the amount of currency in circulation in the last 2 years. Inflation is just that, inflation of the amount of money in circutlation, this forces prices to rise due to the lower purchasing power of the currency.
It's no wonder that WalMart recently reported inflation of consumer prices on their inventory of an average of 6% last month. Most food items are up as much as 50% in the same time frame. Commodity prices are going to skyrocket soon.