Just something I stumbled upon on the Internet today. I like the idea of Soylent, but maybe a liquid diet is not practical.
Interestingly, food texture also has an impact on [adult hippocampal neurogenesis] AHN; rats fed with a soft diet, as opposed to a solid/hard diet, exhibit decreased hippocampal progenitor cell proliferation. The authors hypothesize that chewing resulting in cell proliferation is related to corticosterone levels . Interestingly, independent studies have shown impairment in learning and memory abilities with similar soft diets [59, 114]. If chewing plays a role in AHN, these data could be particularly relevant to the ageing population with cognitive decline where dental weakening might limit the chewing ability. SOURCE: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2775886/