In the spirit of Thanskgiving where thoughts of food predominate, British researchers have determined that humans are NOT able to produce more saliva by merely thinking of foods whether hungry or not. This includes looking at pictures of sumptuous foods. What researchers did determine is that SMELLING foods increased salivary production significantly. Tasting and chewing was even more influential in salivary production. So at least for humans, unless the food is smelled, tasted, or ch…