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Shortness of Breath after Eating: Sign of Hyperventilation

Digestive systemThe digestive system is a sophisticated conveyor more complicated than any modern chemical factory. It has its own brain (the enteric nervous system), various organs, special chemical messengers for communication, and hundreds of digestive enzymes. When we are hungry, the system is ready to accept and process food. Eating without real hunger results in biochemical stress for some organs and the whole system in general. (According to a recent survey "Americans and Overeating", over 60% of American women eat or have a snack when they feel stressed.) Stress for the GI system, requirements in digestiveEffects of overbreathing and coughing on brain oxygen levels enzymes and the need to store new substances in the body, in their turn, all lead to hyperventilation causing shortness of breath after eating. You can easily notice this negative effect of overeating on breathing when you exercise.

Hence, the immediate effect of overeating is hyperventilation. What is next? Overbreathing causes low CO2 content in alveoli and arterial blood leading to reduced body-oxygen levels. Hence, overeating must promote any chronic disease or health pathology. It logically leads to shortness of breath after eating.

Shortness of breath mechanism

Hyperventilation also reduces oxygen content in the brain. This can cause any mental illness and disrupt or affect neurotransmitters and the state of the nervous system due to another factor. CO2 is a stabilizer of the nervous system or homemade sedative and tranquilizer. Apart from psychological and neuronal effects, overbreathing will worsen heart or cardiovascular disease, diabetes, cancer, arthritis, and any other chronic condition.

When hyperventilation is accompanied by overeating, pancreas experience especially severe forms of stress since overbreathing reduces blood supply and oxygenation of pancreas, while overeating intensifies the demands in digestive enzymes to process extra-food substances. The final outcome is pre-diabetes, where health will be further compromised by reduced insulin efficiency caused by hypocapnia with noticeable shortness of breath.

Doctor helps an elderly manThe amplitude of these negative changes is proportional to the caloric value and type of meal eaten. Therefore, with larger meals, especially ones with fats and proteins, these effects are more significant. As Doctor Buteyko suggested, when digested substances are in the blood, they are to be used or metabolized by body cells. This cellular consumption means “inner breathing”. Thus, the respiration of cells (this term is normally used by certain microbiologists), especially in case of overeating, is intensified. That causes increased ventilation in the human organism (Buteyko, 1977). Overeating, according to Doctor Buteyko, has the worst possible consequences for respiration leading to shortness of breath after eating.

Doctor Buteyko also found that meals rich in proteins (especially when they are quick absorbing animal proteins) and, to a lesser degree, fats considerably intensify breathing, while fresh fruits and vegetables produce the least impact on ventilation. Why? One reason is due to varying availability of digestive enzymes. Fresh fruits, for example, often have their own enzymes for self-digestion making their digestion easy. Cooked meats and fats are hard to digest. Second, the amino acids cause blood acidification. Therefore, the CO2 removal (or overbreathing) is required to restore the blood’s normal pH. Third, some essential amino acids can directly affect the breathing centre and intensify respiration (chapter 8).

An old study by Haselbalch (1912) revealed that after following a vegetarian meal, aCO2 decreased to 43.3 mm Hg (the initial value was about 45 mm Hg); while a meal with meat resulted in 38.9 mm Hg. Such a difference means that the CP test results after a meat meal can be about 12 s less, than after a vegetarian one. Explaining this finding in his textbook on respiration, Professor Haldane suggested, that "a meat diet, which causes an increase of sulphuric and phosphoric acids in blood, is acid-forming as compared to a vegetable diet, which contains less protein and relative abundance of salts yielding carbonates"(p.183, Haldane, 1922).

Hence, animal proteins produce an even worse effect on shortness of breath after eating. However, it not advisable for all people with less than 20 s for the body-oxygen test to become vegetarians. Low body-oxygen content is also accompanied by ineffective protein metabolism and increased requirements in dietary proteins.

Red blood cells in bloodThus, the breathing centre compensates for the additional acids (amino acids) in the blood and the resulting blood acidification (low pH of the blood) by reducing carbonic acid and CO2 stores. While with the vegetarian meal, the presence of additional alkaline salts in the blood requires extra acids for blood pH preservation. Among all acids in the blood, carbonic acid is the main component and its concentration can be changed by respiration.

These ideas provide some explanation why alkaline diets are considered to be healthy in the management of various health problems (fruits and vegetables yield alkaline residues in the blood when they are consumed), while acidic diets (that include meats, fish, eggs, dairy products, most grains, legumes and nuts) less so.

In addition to the immediate effects on respiration, a lack of normally occurring food substances in the diet such as vitamins and minerals can gradually cause chronic hyperventilation. For example, carbohydrates require for their digestion adequate amounts of B vitamins. These vitamins are naturally present in cereals, whole grains and root vegetables, but almost absent in sugar, white bread and white rice. Thus, eating these refined products diminishes the B vitamin content in nervous cells gradually leading to chronic hyperventilation (Buteyko, 1977). Doctor Buteyko and his colleagues particularly emphasized the dangers of sugar and refined products. The lack of some minerals (especially Mg, Zn, and Ca) or their biochemical unavailability is another cause of chronic overbreathing.

Therefore, the typical western diets, which are often full of refined products and lack fresh fruits and vegetables, have negative effects on breathing. Most of all, overeating, so prevalent nowadays, is one of the major causes of chronic hyperventilation.

What causes overeating and shortness of breath after eating?

Group of medical peopleAccording to Russian studies, when our breathing gets slightly heavier and aCO2 concentrations decrease, glucose is driven from the blood into fat cells since CO2 influences permeability of membranes of fat cells in relation to blood glucose. Hence, since Hyperventilation is Present in Over 90% of Normal People (as evidenced by 24 medical publications) most modern people should gradually accumulate extra-weight. This is exactly what we see in real life. Shortness of breath after eating is a common sign of overeating.

Conclusions. An ineffective breathing pattern (overbreathing) makes people overeat and without addressing abnormal respiration, one cannot expect success when dealing with compulsive overeating, stuffing, food addiction, obesity and weight gain. All these abnormalities are possible only in conditions of overbreathing with shortness of breath after eating as one of the symptoms.

Hence, if one wants to know how to stop overeating, he should change the way he breathes. When we breathe more, we tend to eat more. Eating more, on the other hand, is the stress for organs of digestion, as discussed above. Therefore, breathing becomes heavier at the end of the digestive process. The solution to this vicious circle is breathing retraining with the goal to slow down automatic (or unconscious) breathing.

The solution for shortness of breath after eating

People with shortness of breath after eating need to increase their body O2 content up to about 25-30 seconds. This means that they need to slow down their automatic breathing. Breathing retraining should be based on addressing lifestyle factors using suggestions developed by Dr. K P Buteyko (the Buteyko breathing method). While a detailed description of many Buteyko breathing exercises can be found in the Learning Section, the easiest and fastest way is to use the DIY breathing device, which construction and use is explained in the book "Amazing DIY breathing device", or the Frolov breathing device.

Resources: Constipation Pain Relief: How to relieve constipation pain using 1-2 min breath work exercise.

References

Go to Causes of Hyperventilation

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