I haven't seen studies on the unlimited maternity / paternity leave benefits; it's probably too new and too rare. (entrepreneur.com)
When I first started seeing the studies showing that even fit people had an increased risk of dying if they sat for long periods of time, I couldn't believe it. (articles.mercola.com)
I haven't seen any studies of breastfeeding and aging yet, but I'm sure they're coming! (scienceofmom.com)