Lynn LeFey wrote:If you assume there's nothing in them that stops your intestines from working, then perhaps you should ask instead what is it that's KEEPING your intestines moving. Your stomach does primary digestion, such as breaking carbs down into sugar. Your small intestines extract fatty material (hence your gall bladder, which produces bile required to digest fat being just south of the Stomach) and absorb sugars and nutrients, and your large intestines extract water and push the rest out. If you're not eating dietary fiber (large intestines) Everything empties from small and large, and your large intestines sit there doing nothing for 3 days, except maybe fermenting bits that aren't getting pushed through any more. The more I think about Lifeboat Rations, the more I'm against them.
My counter to this is:
First, I think you're missing the point. This is for a 3-4 day bug out, not sustained eating. Unless you got food poisoning from something, 3-4 days of eating something will not materially affect your health. As for diet fatigue, it would be a factor if you were eating this for weeks, but not a couple of days.
Second, flour and sugar break down into simple and slightly more complex sugars, which go through your liver and provide glucose for the production of ATP in your cells. After digesting of such simple foods, there isn't much left to sit in your intestines. You won't poop much, not because your intestines aren't working, but because there isn't much of anything TO
poop. If you're really worried about it, take some of the little trail packs of almonds they sell at the supermarket. Eat a couple of those a day with the rations, and you'll blow out your guts just fine.
Third: tough = resistance to shock. Tough doesn't mean taking a lot of punishment, it means keeping your head. Yes, it doesn't take much to wrap your head around the fact that you'll eat the same thing for 3 days. You don't dwell on that, because you will miss the things that actually will harm you along the way. Have you ever done this for real? I can tell you that you are focusing on your end goal, paying attention to your surroundings, and end up having to force yourself to remember to eat and drink before you get woozy. Half the time I didn't even taste the food I ate, so neither liking the taste, nor diet fatigue were a factor.
Fourth: weight. Move light and get where you are going faster. Getting where you are going means getting to comfort. For me, one of the most likely uses for the BOB is to get home. Both routes from work cross rivers. They've been flooded out before to where vehicular passage wasn't possible. Simply walk home with BOB, swim a little (definitely don't want cans doing that), get home quickly, and take a pizza out of the freezer, throw it in the over while I shower. Then I can eat it, knock backa few beers, and spend the rest of the night evacuating my bowels.
I'm not AGAINST you using cans, just arguing that lifeboat rations are a bad idea, or are harmful to your health over the period of time we are discussing. They are definitely not for long-term consumption (IIRC they say that right on the box).