is indeed a point at which our body’s capacity for adjustment and adaptation in the face of stress becomes inadequate. When this occurs, health begins to break down in obvious ways. I will cover this in greater detail in the next chapter, but it is important to note that this very noticeable deterioration in health is itself a potent stressor. Anxiety in the face of changes in function and the onset of pain quickens the downward spiral. If you wait for this stage before taking reforming action you may have waited too long. It is, though, possible to regain health from this point, but only with great effort.
There are extrinsic factors which are outside our control, but there are also many aspects of the picture that we can control. There are, of course, states of mind which generate stress, which are outside our conscious control. There are many deep-seated anxiety states and depressions, in which only skilled psychotherapy and counselling can enable us to achieve insights and understanding and, ultimately, a resolution of the problem. Such forms of treatment lie outside the scope of this book, but it is suggested that the general principles here outlined, and the techniques described, can only be of help, even in such cases. However, no-one who is receiving psychotherapy should attempt self-treatment without first consulting his or her practitioner.
The Physical Effects of Stress
Stress is an essential and constant part of life. It is the spur that drives humankind to all achievement, but, when excessive, it can destroy. All the ages and stages of life are transitional; from baby to toddler, from schoolchild to young adult, from active worker to retired pensioner, and so on. Each change has potential stress implications which, when overlayed upon the external and internal stresses of living, are constantly affecting our minds and bodies.
A definition of stress, coined by the great researcher into this ubiquitous phenomenon, Dr Hans Selye, is simply ‘the rate of wear and tear on the body’. All change calls for adaptation. If we go from a warm room into the freezing cold outdoors, adaptive mechanisms immediately become operative to help the body to maintain its equilibrium.
Adaptive processes take place in response to all changes and stressors, whether these are physical, such as heat and cold; chemical, such as polluted air and water, and drugs; or self-generated emotions, such as anger, grief or joy. Anything that is perceived as threatening the mind or body arouses a response of an adaptive or defensive nature instantly.
Homoeostasis
This ability to attempt to maintain the safe equilibrium of the body is known as homoeostasis. It is, for a variety of reasons, not always successful. The biochemistry of the body may be inadequate for the task, perhaps through poor nutrition – and this and other possible factors, including structural integrity, will be considered later. If the response is inadequate, or if perception of threats is inaccurate, then unbalanced and faulty body adjustments may occur with harmful consequences.
The normal stress reaction is seldom the result of the outside agency, but rather it is the system’s reaction to it. Whether the stressor is physical, such as sudden exposure to cold; or psychological, such as an unexpected crisis or a change of responsibility at work, or unpleasant news, the body begins to make biochemical changes in response to its perceived needs. Such changes take place to a greater or lesser degree almost constantly throughout life.
If a stressor is prolonged, continuous or extreme in its nature, then the defensive mechanisms of the body become even more active. In response to intense heat, changes take place in the blood chemistry and circulatory system in order to cool the body by means, for example, of extra fluid loss and evaporation through the skin. Should this fail to achieve the desired effect, then an even greater defensive effort might involve fainting and temporary unconsciousness, in order to reduce all bodily functions to a minimum. Such homoeostatic efforts, though, fall short of being actual stress reactions, unless prolonged.
Fight or Flight
In response to any stress or extreme the body undergoes a series of changes which Selye has grouped under the heading of the ‘fight or flight’ reaction. Quite logically, the response to being confronted with real physical danger, such as the appearance of a man-eating animal, would be to attack it or to escape from it. Whichever was the choice, the body would require instantly available energy, strength and concentration. There would be no time for slow deliberation or stages of progressive arousal, for by that time the adversary would be beginning its meal! If an appropriate response (fight or flight) to the stressor were forthcoming, then the biochemical and other changes triggered by the initial shock, would be utilized, and no ill-effects would be felt.
Today, people are seldom faced with such life and death stress situations. However, the mind and body may feel threatened in many other ways than by a man-eating tiger. Any perceived (accurately or not) threat or danger to the mind or body will produce a similar ‘fight or flight’ reaction, and there may be ways of producing an appropriate response to these. For instance, someone might say something which is perceived as being insulting and hurtful. The stress reaction, which includes a tensing of the muscles as well as biochemical (hormonal and other) changes, could simply be ‘bottled up’ and remain as an extra degree of muscular tension. If a suitable verbal and/or physical response were to be found, however, then again the preparation for action would have been expressed and used, and no ill-effects would result.
The degree of stress imposed on the body will vary with your perception of what constitutes a threat – one person would laugh and shrug off an insult, another would reach for a gun! It will also vary with your ability to respond appropriately. One might calmly but firmly state their views and inform the ‘villain of the piece’ of their feelings. Another might bluster and fluster and add fuel to the fire, and in doing so fail to obtain psychological release from the hurt and anger within. The stress factor, therefore, cannot be seen as the main determinant of the degree of ‘fight or flight’ reaction, but only as its potential trigger. The harm done to your body by prolonged, repeated arousal, is largely an outcome of your beliefs, attitudes, personality and ability to see objectively what constitutes real, and what constitutes imagined danger, physically or mentally.
The ‘Chain Reaction’ of Stress
The actual processes that take place during arousal and ‘fight or flight’ reactions are quite amazing to contemplate. It is possible to extrapolate these immediate changes and to see their potential for major physical damage if they are repeated or prolonged. The following process occurs instantly within the body in response to stress:
The muscles tense in preparation for activity; the hypothalamus (part of your brain) co-ordinates a number of hormonal changes; the pituitary gland is activated, and among other results of this is the production by the adrenal glands of the hormones, adrenaline and noradrenaline. As a result, a vast number of bodily changes occur; the pupils of the eye dilate – no doubt to see more clearly; the heart pumps more rapidly to service the extra requirements of the tense muscles, and this increases the blood pressure; the extra blood for the muscles requires extra oxygen, and the respiratory rate quickens to cope with this, as well as to help expel additional waste products resulting from increased activity. Blood being diverted to potential muscular activity requires the shut-down of some other functions, including reduction in blood through the kidneys, as well as the ceasing of digestive functions. To this end, saliva dries up and the intestines and stomach stop working. The body’s need for additional energy is met by the liver releasing stored glucose into the bloodstream, where the oxygen changes it into readily available energy. In anticipation of extra activity, the skin cools the body down by opening its pores to encourage perspiration. Since blood is being diverted to the muscles, there
