Thanks, Joseph! Thanks for the water suggestion! I will pass it along. You can see from our Nutritional Fact Panels that the nutrition claims are indeed true. While the butter has a 10 year shelf life, the other products in the kit have a 15 year shelf life. Regarding storage, while extreme heat (cold is not a problem), would shorten the shelf life a little, there is not going to be anything that stands up to temperature shifts better than freeze dried food. These are intended to work well even when stored in cars. We have taken care to formulate our meals to stay under 9 grams of total sugar, and correspondingly, carbohydrates that are typically 10-15% of your daily value per serving. Our entrees tend to be the lowest but even our snack meals fall in this range. The carbohydrate and sugar content in Nutrient Survival foods is very low, making it an ideal choice for type 2 diabetics. The foods are made with natural ingredients, making them a great option for those looking to manage their blood sugar levels. Additionally, the foods are high in fiber, which helps to slow the absorption of carbohydrates and sugars, further helping to regulate blood sugar levels. All our products contain some balance of carbohydrates, fats, and proteins which some studies suggest are less likely to elevate glucose levels when paired together. Of course, consult your doctor for all your medical advice.