If you have tried MRE meals at least once in a lifetime then you might be inclined to keep using it for as long as you can. However it would be helpful if you can find answers to questions such as how often you can actually have MRE meals exclusively without having access to other types of meals.
It all depends upon the type of MRE meals that you go for as going for different varieties at different times is going to work in your best interest. Whatever you eat must include a balanced diet which means all major food groups should be included in your meals.
Since MRE meals were designed with military in mind and they were exclusively used by military personnel in the past, it only is natural to believe that Meals Ready to Eat have been carefully formulated to ensure proper supply of nutrition for better health.
To be sure you are getting the right meals it would be important for you to look for reliable and reputed brands who provide military grade MRE meals and websites like MRE Giant would be in the best position to offer you help along those lines. If you get good quality MRE meals and you include a good enough variety into your daily regimen then your chances of not having any issues with what you eat would be pretty good.