A wave of celebrity chefs began with Julia Child and Graham Kerr in the 1970s, with many more following after the rise of cable channels like Food Network. By the beginning of the 21st century regional variations in consumption of meat began to reduce, as more meat was consumed overall. Saying they eat too much protein, the 2015–2020 Dietary Guidelines for Americans asked men and teenage boys to increase their consumption of under consumed foods such as vegetables.