Here's one more study on time-restricted feeding. This one shows that controlled feeding windows benefit the liver.
What's interesting about this article is the associated commentary. The author states:
"Panda, for one, has stopped eating between 8 pm and 8 am and says he feels great. "I even lost weight, although I eat whatever I want during the day," he says."
How is eating from 8 am to 8 pm a restricted feeding window?? What sort of schedule was he eating on before – eating from dawn until midnight??
I haven't regularly eaten past 8 pm in many, many years. I usually don't eat past 7 pm, but as of late I've been stopping at 6 pm as an experiment.
I wasn't able to find any hard data, but I would have to imagine that feeding windows back in the early 1900s had to be smaller than today. If someone is eating all day and all evening, there is little time for digestion or burning bodyfat.
I would have to think that an extended-time eating pattern has been a contributer to the obesity epidemic.