Metabolism
Metabolism is the sum of total of the conservation and expenditure of all body energies and is divided into two:
- Anabolism: The build-up and replacement of tissue and the storage of energy; for example, glucose is taken from the digestive tract and stored in the liver as glycogen.
- Catabolism: The breakdown of tissue and the use of energy. The process of metabolism is extremely complex and science has not yet found the keys to unlock all its mysteries. It is known, however, that the thyroid gland is the regulator of metabolism in the body and is itself regulated by the pituitary gland in the skull. Regulation of metabolism in a healthy person occurs in response to physical and emotional demands relayed through the brain and its hypothalamic centers.
The thyroid gland lies in front of the neck, wrapped around the trachea. It is divided into two lobes, one on either side of the neck, and secretes hormones into the bloodstream. These hormones, which are called thyroxin (T4) and triiodothyronine (T3), determine our metabolic rate. Their manufacture depends upon the presence of the various nutrients, including essential fatty acids, the amino acid tyrosine, zinc and iodine. The absence of any of these substances can lead to underactive thyroid function and cause an enlargement of the thyroid gland, known as goitre. This occurs most commonly in mountainous areas, such as the Himalayas, and other regions far from the sea.
Thyroid diseases
In regions where there are no obvious deficiencies of the essential nutrients, thyroid disorders are still very common. Here, the two major forms of thyroid diseases are hyperthyroidism (overactive thyroid) and hypothyroidism (under-active thyroid).
Hyperthyroid or thyrotoxicosis: In this condition the gland secretes excess hormones. It is eight times more likely to be found in woman than in men, and the most commonly between the ages of thirty and fifty. Thyrotoxic individuals become thin, tremulous, irritable, anxious and even hysterical. Because the metabolism is raised, they experience rapid heart rate and palpitations, rapid shallow respirations, frequent bowel motions and diarrhoea, flushing, heat, intolerance, sweating, menstruation disturbance, and sometimes bulging of the eyes (exophthalmos).
Such people suffer the paradoxical situation in which they feel fatigue and lack of energy and yet they are compulsively active. They are restless and fidgety and the slightest remark may set off an inappropriately angry response. Conventional medical management of this condition includes drugs, such as carbimazole, radioactive iodine and surgery.
Hypothyroidism: This condition occurs when there is insufficient hormone secretion. The symptoms of hypothyroidism are those of decreased metabolism with the slowing of mental and physical activities, constipation, slowing of movement, tiredness, vague muscle pains, deafness, hoarseness, weight gain despite poor appetite, dry skin and hair, disordered menstruation and forgetfulness.
The onset of this disease is gradual and its symptoms are often mistaken for signs of ageing. Listlessness, dullness and apathy can be so marked that the patient does not care for herself or even want treatment, having to be persuaded by family or friends to seek medical assistance. Frequently the doctor will recognize the condition on meeting the patient by chance after a long interval. An advanced case characteristically has swollen, puffy eyelids, thick lips and an enlarged tongue. The skin retains fluid, becomimg pale and turgid, sweating is absent and the skin is flabby and dry, the speech slow, monotonous and husky. Later in the disease, heart failure occurs. The replacement of thyroid hormone in these patients has dramatic effects.
Holistic medical management of thyroid disorders
Both underactive and overactive thyroid dysfunctions are autoimmune disorders. This means that our immune system is producing antibodies to our own tissues. There is increasing evidence that when our digestion is not functioning properly and the food is not broken down fully in the gut, the incompletely digested proteins become immunogenic; that is, they are large enough for the immune system to recognize them as foreign entities and produce antibodies for protection. Unfortunately, the antibodies can cross-react with our own tissue and in this case attack the thyroid gland.
A comprehensive assessment by a physician skilled in both allopathic and naturopathic therapy could be very beneficial.
Yogic management
The thyroid is also related to vishuddhi chakra, the psychic center which purifies the poisons of the body, vish, and turns them into amrit. Long before medical science ever knew about the existence of thyroid glands, the yogis had devised practices which maintained healthy glands and metabolism. The good health of the neuroendocrine system was understood to be vital to higher awareness.
Sarvangasana (shoulder stand) is the most well recognized asana for the thyroid gland. An enormous pressure is placed on the gland by this powerful posture. As the thyroid has one of the largest blood supplies of any body organ, this pressure has dramatic effects on its function, improving circulation and squeezing out stagnant secretions. Stimulation of the area draws the awareness to the area, and with attentive awareness comes prana, the vehicle of healing. This means that as we concentrate on the area, the sensory nerves are stimulated, setting relays within the brain into motion. As the whole process is health giving, the brain tends to readjust its regulatory centers and a corresponding readjustment of muscular states, blood flow and nervous activity in the neck are follows.
Therefore, the practice of sarvangasana is useful in both mild over and under-active states, as its overall effect is to rebalance. The effects of sarvangasana are enhanced by feeling the normal breath moving in and out of the throat while in this position.
After sarvangasana, we should perform matsyasana (fish pose), and from sarvangasana we can practice halasana (plough pose), padma sarvangasana (shoulder stand lotus pose) and other variations. All these practices are positive influences for better health of the thyroid gland. At the same time practices should be avoided in severe thyrotoxicosis, physical debility or a very enlarged goitre, where medical therapy should be the first line of treatment to be given.
Vipareeta karani mudra (half shoulder stand), though not placing as much pressure on the thyroid gland are, is more powerful than sarvangasana because it incorporates ujjayi pranayama and awareness of psychic passages. It is also more useful in goitre, though once again adding iodine to the diet is the first obvious step. Other effective asanas include syrya namaskara (sun salutation), pawanmuktasana (wind releasing pose) with emphasis on the head and neck exercises, supta vajrasana (sleeping thunderbolt) and all backward bending asanas, kandharasana (bridge pose), simhagarjanasana (roaring lion pose). Pawanmuktasana (wind releasing pose), is useful for initial therapy in severe thyroid disease and for older patients.
The most effective pranayama for the thyroid problems is ujjayi. It acts on the throat area and its relaxaing and stimulating effects are most probably due to stimulation of ancient reflex pathways within the throat area (assosiated, for example, with vomiting, breathing, swallowing) which are controlled by the brain stem and hypothalamus. The practice also gives us direct access into pranic and psychic networks, the substructure of the metobolic activity.
Nadi shodhana pranayama is useful in rebalancing metabolism through its effects on ida and pingala nadis. Sheetali and seetkari, cooling breaths, are valuable in hyperthyroid state in order to cool the overactive hypermetabolic and therefore overheated body. Bashtrika pranayama should be used in hypothyroidism because of its heating effects, its ability to speed up metabolism.
Jalandhara bandha (throat lock) applies pressure to the thyroid area and should be incorporated into pranayama cautiously and after the initial exercises have been mastered. Other bandhas can also be added to enhance the effects of pranayama. Ofcourse, in the long run the most powerful techniques to tune not only the thyroid gland, but also the whole neuroendocrine system, are the potent maha bandha, maha mudra, and maha bheda mudra. These can be mastered only by advanced yoga students.
The role of emotional relaxation
One of the most prominent precipitating factors in states of thyroid imbalance is long-term suppression and blockage of emotional expression. This is closely related to another condition, 'globus hystericus', which is also prominent in middle-aged woman. Here the major symptom is the frequent desire to swallow so as to remove a psychic lump or tensions in the throat area. In yogic treatment this constant, sustained tension is sometimes experienced consciously for the first time during the deeper stages of yoga nidra, as the three-fold accumulated and deeply set tensions - muscular, mental and emotional - are progressively yielded up.
Balancing of the emotions, and giving a suitable outlet for their expression is an important part of yoga therapy for thyroid disease. Kirtan (singing of mantras collectively to the point of self-forgetfulness and transcendence) is one of the most useful means.
Hyperthyroid or thyrotoxicosis: In this condition the gland secretes excess hormones. It is eight times more likely to be found in woman than in men, and the most commonly between the ages of thirty and fifty. Thyrotoxic individuals become thin, tremulous, irritable, anxious and even hysterical. Because the metabolism is raised, they experience rapid heart rate and palpitations, rapid shallow respirations, frequent bowel motions and diarrhoea, flushing, heat, intolerance, sweating, menstruation disturbance, and sometimes bulging of the eyes (exophthalmos).
Such people suffer the paradoxical situation in which they feel fatigue and lack of energy and yet they are compulsively active. They are restless and fidgety and the slightest remark may set off an inappropriately angry response. Conventional medical management of this condition includes drugs, such as carbimazole, radioactive iodine and surgery.
Hypothyroidism: This condition occurs when there is insufficient hormone secretion. The symptoms of hypothyroidism are those of decreased metabolism with the slowing of mental and physical activities, constipation, slowing of movement, tiredness, vague muscle pains, deafness, hoarseness, weight gain despite poor appetite, dry skin and hair, disordered menstruation and forgetfulness.
The onset of this disease is gradual and its symptoms are often mistaken for signs of ageing. Listlessness, dullness and apathy can be so marked that the patient does not care for herself or even want treatment, having to be persuaded by family or friends to seek medical assistance. Frequently the doctor will recognize the condition on meeting the patient by chance after a long interval. An advanced case characteristically has swollen, puffy eyelids, thick lips and an enlarged tongue. The skin retains fluid, becomimg pale and turgid, sweating is absent and the skin is flabby and dry, the speech slow, monotonous and husky. Later in the disease, heart failure occurs. The replacement of thyroid hormone in these patients has dramatic effects.
Holistic medical management of thyroid disorders
Both underactive and overactive thyroid dysfunctions are autoimmune disorders. This means that our immune system is producing antibodies to our own tissues. There is increasing evidence that when our digestion is not functioning properly and the food is not broken down fully in the gut, the incompletely digested proteins become immunogenic; that is, they are large enough for the immune system to recognize them as foreign entities and produce antibodies for protection. Unfortunately, the antibodies can cross-react with our own tissue and in this case attack the thyroid gland.
A comprehensive assessment by a physician skilled in both allopathic and naturopathic therapy could be very beneficial.
Yogic management
The thyroid is also related to vishuddhi chakra, the psychic center which purifies the poisons of the body, vish, and turns them into amrit. Long before medical science ever knew about the existence of thyroid glands, the yogis had devised practices which maintained healthy glands and metabolism. The good health of the neuroendocrine system was understood to be vital to higher awareness.
Sarvangasana (shoulder stand) is the most well recognized asana for the thyroid gland. An enormous pressure is placed on the gland by this powerful posture. As the thyroid has one of the largest blood supplies of any body organ, this pressure has dramatic effects on its function, improving circulation and squeezing out stagnant secretions. Stimulation of the area draws the awareness to the area, and with attentive awareness comes prana, the vehicle of healing. This means that as we concentrate on the area, the sensory nerves are stimulated, setting relays within the brain into motion. As the whole process is health giving, the brain tends to readjust its regulatory centers and a corresponding readjustment of muscular states, blood flow and nervous activity in the neck are follows.
Therefore, the practice of sarvangasana is useful in both mild over and under-active states, as its overall effect is to rebalance. The effects of sarvangasana are enhanced by feeling the normal breath moving in and out of the throat while in this position.
After sarvangasana, we should perform matsyasana (fish pose), and from sarvangasana we can practice halasana (plough pose), padma sarvangasana (shoulder stand lotus pose) and other variations. All these practices are positive influences for better health of the thyroid gland. At the same time practices should be avoided in severe thyrotoxicosis, physical debility or a very enlarged goitre, where medical therapy should be the first line of treatment to be given.
Vipareeta karani mudra (half shoulder stand), though not placing as much pressure on the thyroid gland are, is more powerful than sarvangasana because it incorporates ujjayi pranayama and awareness of psychic passages. It is also more useful in goitre, though once again adding iodine to the diet is the first obvious step. Other effective asanas include syrya namaskara (sun salutation), pawanmuktasana (wind releasing pose) with emphasis on the head and neck exercises, supta vajrasana (sleeping thunderbolt) and all backward bending asanas, kandharasana (bridge pose), simhagarjanasana (roaring lion pose). Pawanmuktasana (wind releasing pose), is useful for initial therapy in severe thyroid disease and for older patients.
The most effective pranayama for the thyroid problems is ujjayi. It acts on the throat area and its relaxaing and stimulating effects are most probably due to stimulation of ancient reflex pathways within the throat area (assosiated, for example, with vomiting, breathing, swallowing) which are controlled by the brain stem and hypothalamus. The practice also gives us direct access into pranic and psychic networks, the substructure of the metobolic activity.
Nadi shodhana pranayama is useful in rebalancing metabolism through its effects on ida and pingala nadis. Sheetali and seetkari, cooling breaths, are valuable in hyperthyroid state in order to cool the overactive hypermetabolic and therefore overheated body. Bashtrika pranayama should be used in hypothyroidism because of its heating effects, its ability to speed up metabolism.
Jalandhara bandha (throat lock) applies pressure to the thyroid area and should be incorporated into pranayama cautiously and after the initial exercises have been mastered. Other bandhas can also be added to enhance the effects of pranayama. Ofcourse, in the long run the most powerful techniques to tune not only the thyroid gland, but also the whole neuroendocrine system, are the potent maha bandha, maha mudra, and maha bheda mudra. These can be mastered only by advanced yoga students.
The role of emotional relaxation
One of the most prominent precipitating factors in states of thyroid imbalance is long-term suppression and blockage of emotional expression. This is closely related to another condition, 'globus hystericus', which is also prominent in middle-aged woman. Here the major symptom is the frequent desire to swallow so as to remove a psychic lump or tensions in the throat area. In yogic treatment this constant, sustained tension is sometimes experienced consciously for the first time during the deeper stages of yoga nidra, as the three-fold accumulated and deeply set tensions - muscular, mental and emotional - are progressively yielded up.
Balancing of the emotions, and giving a suitable outlet for their expression is an important part of yoga therapy for thyroid disease. Kirtan (singing of mantras collectively to the point of self-forgetfulness and transcendence) is one of the most useful means.