CARBOHYDRATES

As per book "Maintaining Nutritional Adequacy During A Prolonged Food Crises",  In the initial survival period, some carbohydrate is recommended. Carbohydrate is needed to prevent ketosis, a condition in which the body bums primarily fat for energy, resulting in abnormal end products that must be excreted in the urine, thereby causing increased water loss from the body. 

A minimum of 75 to 100 g of carbohydrate is recommended to prevent ketosis and to help the body retain water to prevent dehydration