Opinions on GMO foods are mixed, although there is no widely accepted prohibition from consuming them. Some clerics and scholars have expressed support, arguing that such food production methods are halal because they contribute to human wellbeing. Voices in opposition to GMOs argue, that there is no need for genetic modification of food crops because God created everything perfectly and man does not have any right to manipulate anything that God has created. Some others have raised concern about the theoretical consumption of specific GMO foods produced using genes from pigs.