I got the same bug as twangmen, on day 54 time has slowed down to a crawl, and it seems minutes are passing inconsistently. The only real problem this has caused is a lack of shop inventory rotation. I also noticed the digestion attribute doesn't update in the profile after level up without switching areas.
Other than that, I do have some design-related feedback. First, it would be nice to be able to see weight distribution without having to go to the clinic. Second, I really wish I could see what kind of cravings a food satisfied. It's just guess-work at the moment. Third, the current breast shape looks weird at larger sizes with any bare skin showing, it looks like one large flesh flab.
Finally, I decided to start recording each food's calorie per happiness point (cph), because as expensive as some foods were, I wanted to see if they were even worth it. From what I was able to record (the bug I encountered stopped me from doing everything), the max was 40 cph (roast turkey), while the min was about 5 cph (salad and sushi). The problem here is that, with only a 50% bonus, cravings often don't outweigh the value of better foods. What this ends up meaning is that you really only want the top few foods on the list, whichever ones are actually better than the max base value when you get an appropriate craving. The rest, unless they provide a separate buff, just aren't worth buying at all (like salad). My suggestion is to either reduce the range of cph across all foods, improve the craving bonus, add more secondary benefits to more foods, or do some mix of all the above. Because right now, I have little reason to buy much other than roast turkey.
Update: Bread loaves are by far the most cph, at 66.666 repeating (not kidding). It's nearest neighbor is turkey at 40, and bread takes up much less stomach space than the next three foods, making it more spammable. Also, oddly enough, milk jugs are not only more cost effective than mystery kegs, they're also not nearly as expensive per unit. As far as buff foods, they're all mostly the same and middle-of-the-road as far as cph, so I think those are fairly balanced.
This game has a lot of potential, and it's quite charming, but math is very important in a game like this. In its current state, unless you're buffing a certain body part, bread loaves are the only food you'll ever want to buy, as nothing beats them even with craving bonuses. Ultimately it's not a huge problem as far as fun factor is concerned, but it is a huge problem if you want the game to encourage buying multiple food varieties.
Also, while doing this, I found myself often accidentally leaving the store when I wanted to buy an item, due to where the buttons are placed. I would recommend placing the back button in the upper left corner, away from all the food menus, and maybe moving the buy button to where back currently is.