Started DIY in July. I still enjoy soda and coffee periodically (without any noticeable change in their taste), but I have zero cravings. I used to drink 12 cups a day, now simply making a pot (4 cups) is out of the ordinary. Cravings stopped immediately upon starting DIY.
What I have noticed is that drinking a lot of caffeine in a day gives me the shakes. “A lot” is defined as more than 2 cups (by measurement-- about one coffee cup filled) in an hour. This change is solely from the dietary change of starting DIY. (I consume DIY as a replacement for about 60-80% of my meals each day, the fluctuation is due to my wife’s eating habits-- she won’t join me in DIY or Soylent and I’ll usually have something with her each day as it’s one of those married rituals that is important to her. But now-a-days, my intake of normal food is significantly lower and the amount I eat is entirely about how tasty I find the meal.)
Another contributor to my caffeine craving was poor sleep. In the last 30 days I’ve also started using a CPAP for mild sleep apnea. I had been eating DIY for about 90 days before this change was implemented. Both DIY and the CPAP have increased my overall energy level, rendering caffeine unnecessary. (And, as noted above, slightly unappealing due to the potential for shakes from high caffeine intake.)