It has been suggested that France's high red wine consumption is a primary factor in the trend. This theory was expounded in an influential 60 Minutes broadcast in 1992. The program catalysed a large increase in North American demand for red wines from around the world.
The medical causes of the French paradox are still not entirely clear, however. A number of studies have been made and the balance of opinions seems to be moving away from wine consumption as the primary cause.