Starvation and its tolerance in extreme and emergency conditions of survival in the wild.

Lack of food causes starvation. During fasting, the body is nourished by self-digestion of its own tissues (autolysis). 

Starvation and its tolerance in extreme and emergency conditions of survival in the wild.

Medicine conditionally distinguishes four types of fasting.

The absolute. In the absence of all food and water.
Full. In the absence of any food, but in the presence of water.
Incomplete. When eating food in a limited amount, insufficient to replenish energy losses.
Partial. When, with enough food, a person doesn’t get one or more substances necessary for the body (vitamins, proteins, etc.) with food.

from hunger, completed within 2-3 days. The harbingers of this final stage are: an increase in hunger, interruptions in the heart, and an increase in the urine of protein decay products. It is generally believed that the greater the stores of fat, the longer the body can tolerate starvation. However, with equal fatness and the same conditions, different people can die in very different terms, which is apparently due to the state of the central nervous system, the nature of metabolism, etc..

Fasting modes when making pedestrian crossings and in an emergency.

You should know. If you eat relatively normally during the transition process, you should try to maintain this regimen further, making efforts to replenish food supplies along the way. If there is no food, and you decide to reach the goal, doing without food and drinking only water, then it is better to starve to the end of the journey. The danger is incomplete fasting, or rather, nutrition from case to case.

For example, 2-3 days of hunger, then when something can be obtained, a load is given to the stomach, then again hunger. With such a regime of fractional nutrition, a person quickly depletes, up to dystrophy, and strength is lost. This is because the body does not timely switch to internal nutrition and deep changes in the cells, their disorientation can begin much earlier than their own internal reserves are used.

With complete starvation, when the body receives only water, it adapts for a certain period to its internal nutrition, that is, nutrition with its reserves of fats, proteins, carbohydrates, vitamins and mineral salts. This food meets all the needs of the body and is complete. In all cases, one must strive to prevent starvation, or at least not bring it to the limit. It is necessary to be able to rationally switch to starvation by necessity and in a timely, competent way out of it.

Most people have a psychological barrier to a zero diet, which is a fear of being completely left without food in a sparsely populated or deserted area. Know, when a stereotype is established in your head that food saves you from cold and fatigue, you become eternally hungry. And you get tired and freeze from a feeling of hunger, and not at all from a limited diet. An experiment was conducted, during which it was explained what starvation is, how to cope with it, etc..

According to the results of psychological and physiological studies conducted before the trip, during and after the trip, not only the preservation of the normal psychological and physical condition of the participants, but even its improvement was objectively attested. The experiment showed that a positive psychological attitude (clarification by people of the harmlessness of 15-20-day fasting, the differences between complete fasting and chronic malnutrition, familiarization with the psychophysiological mechanisms of this process) had a steady positive effect on all body functions.

The overall results of the experiments on the Extremum program, conducted in 1981-1984 in different types of tourism by different people, convincingly testify to the suitability of this unique method, which makes it possible to confidently eliminate emergencies in the absence of food (in the presence of only water) without damage to health.

Based on the book Methods of Autonomous Human Survival in Nature.
Maslov A.G., Konstantinov Yu.S., Latchuk V.G..

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