The lack of external intake of nutrients forces the body to rebuild metabolic processes at the cellular level. This mechanism was developed in the course of evolution to survive in conditions of scarcity of food resources.
Physiological adaptation occurs in stages, involving the hormonal system and internal organs. Each stage is characterized by special chemical reactions in the tissues and blood serum.
Changing the energy balance at the initial stage
During the first 12 hours without eating, the level of glucose in the blood plasma gradually decreases, which provokes a drop in the production of the hormone insulin. The pancreas reduces secretion, giving rest to the endocrine system. In response, the production of glucagon is activated, which is responsible for the breakdown of glycogen stores in the liver.
A decrease in insulin triggers a chain of physiological changes in the tissues:
- excess intercellular fluid is released, reducing hidden edema;
- the liver begins to actively convert glycogen into easily digestible glucose;
- skeletal muscles use up local carbohydrate reserves to work;
- fat depots are beginning to prepare for the breakdown of triglycerides.
Glycogen reserves are limited and depleted in about 24 hours of moderate activity. After that, the body is forced to look for alternative energy sources to maintain the functioning of the central nervous system. This moment is considered the threshold for launching the processes of deep cellular adaptation.
This temporary mechanism protects tissues from energy starvation until the moment of complete metabolic restructuring, which precedes deep cellular cleansing.
Entering a state of ketosis and activating autophagy
When carbohydrate reserves run out, the liver begins to process free fatty acids into ketone bodies. Beta-hydroxybutyrate and acetoacetate molecules become the main fuel for the brain. Ketosis provides a stable supply of energy without sudden fluctuations in blood sugar levels, which suppresses hunger on a physiological level.
After about 36 hours of abstinence from food, the process of autophagy begins:
- cells begin to utilize their own defective protein structures;
- old and non-functional mitochondria inside organelles are destroyed;
- hidden intracellular viral particles are neutralized;
- the released amino acids are directed to the synthesis of vital proteins.
Autophagy allows the body to carry out deep revision and purification at the subcellular level without involving external building materials. A decrease in the production of insulin-like growth factor stimulates the renewal of the stem cell pool. The metabolism goes into maximum nitrogen conservation mode, protecting the muscle tissue from destruction.
The kidneys begin to work more actively, removing the products of fatty acid metabolism, which prepares all physiological systems for stable operation in a new mode.
Stabilization of metabolism and deep adaptation of organs
By the third day of fasting, the metabolic rate stabilizes at a new level adapted to endogenous nutrition. The internal organs switch to an economical mode of operation, reducing the need for oxygen and nutrients. The level of systemic inflammation in the body decreases due to a decrease in the activity of inflammatory cytokines.
Physiological indicators such as blood pressure and heart rate decrease. This reduces the load on the myocardium and vascular wall, contributing to their gradual recovery. The brain adapts to high ketone levels, providing clarity of thought and high concentration of attention.
A safe way out of prolonged fasting requires gradual food intake in order to avoid refeeding syndrome. The intake of nutrients should be strictly dosed, starting with diluted juices or light vegetable broths. A proper transition to a regular diet reinforces positive changes in the functioning of all body systems. Commencer à parier sur 1xBet avec un bonus conséquent est un avantage non négligeable. Lors de la création de votre compte, que vous soyez en Guinée, au Gabon ou au Congo, n'oubliez pas d'utiliser le code promo 1xbet sénégal dans le formulaire d'inscription. Ce code débloque un bonus de bienvenue de 100% jusqu'à 130€ sur les paris sportifs, vous offrant ainsi des fonds supplémentaires pour tester différentes stratégies. Vous pouvez aussi opter pour le pack casino qui propose 1950€ et 150 tours gratuits, parfait pour découvrir l'univers des machines à sous.