LONDON (AFP) - Oil prices fell on Tuesday as the International Energy Agency warned about potential risks to the economic recovery posed by high energy costs. New Yorks main contract, light sweet crude for delivery in May, dropped 50 cents to 83.84 dollars a barrel. Brent North Sea crude for May slipped 10 cents to $84.67. The IEA on Tuesday revised up its forecast for global oil demand in 2010 by 30,000 barrels per day owing to unexpectedly strong economic activity in the United States, Asia and the Middle East. However, the IEA also warned in its latest monthly report that oil prices above 80 dollars a barrel could hamper economic recovery. While ongoing price subsidies may shield non-OECD consumers from the reality of any potential renewed surge in prices, this, plus tighter credit than two years ago, could stall OECD economic recovery or render it more 'oil-less than we currently envisage, the IEA said. Ultimately, things might turn messy for producers if (oil at) 80-100 dollars a barrel is merely seen as the new 60-80 dollars a barrel, stunting economic recovery while prompting resurgent non-oil and non-OPEC supply investment. Oil prices spiked well above 80 dollars last week after recently trading in a 70-80 dollars range, a level deemed satisfactory by the Organization of Petroleum Exporting Countries (OPEC) and consumers. Crude oil prices are likely to get some support following a bullish tone from the IEA monthly report which showed that average global crude oil demand will reach a record high of 86.6 million barrels per day (mbd) in 2010, Sucden Financial Research analyst Myrto Sokou said. The IEA on Tuesday also raised its forecast for oil supply from countries such as Canada and Russia which do not belong to OPEC whose member nations together pump about 40 percent of the worlds crude. Non-OPEC ouput was revised up by 220,000 barrels per day to 52 mbd for 2010, reaffirming a more optimistic supply outlook amid elevated price levels. The IEA offers advice on energy policy to the Organisation for Economic Cooperation and Development (OECD), a group of 30 developed-world nations.