1
Itâs not âall in the mindâ
So youâve suffering from stress or anxiety or worry â and doubtless youâve had lots of unpleasant symptoms. Youâve probably been to the doctor about them. Maybe youâve had tests, and no one has really been able to find anything physically wrong with you.
You arenât imagining it
So, are your symptoms âall in the mindâ? I donât think so.
Let me tell you a story. Suzie Jenkins had felt âstressed outâ for many months. She had a demanding job, and she was trying to bring up her two children on her own. Her husband had left her the previous Christmas, and quite often there were delays in the arrival of the monthly cheque that he was supposed to send her.
Then she began to experience troubling physical symptoms. In particular, she had bouts when her heart started to beat very fast and very hard. She told her best friend: âIt goes at about 100 a minute, and it feels as though itâs going to burst out through my ribs.â
She went to her doctor. The GP examined her, and listened to her heart and lungs with his stethoscope â but he could find nothing amiss. But the attacks persisted. So the doctor decided to arrange an electrocardiogram (ECG), which is the well-known electrical test on the heart. The results came back as âcompletely normalâ.
But Suzie was still troubled by the thumping. In an effort to find out what was wrong, the doctor ordered blood tests, including one for thyroid gland problems. However, all of these investigations were reported as normal too.
The palpitations continued. In some desperation, the doctor sent Suzie for a chest x-ray. It too turned out to be perfectly OK.
So what on earth was going on? Were Suzieâs attacks of fast heartbeats all in her mind?
No, they werenât. Indeed, if anyone had taken her pulse during an attack, theyâd have found that her heart genuinely was batting along at 100-plus beats per minute â although soon afterwards the rate went back to normal.
What was really happening was that because of the stress, anxiety and worry that she had been subjected to, Suzieâs body was producing far too much adrenaline, plus a related hormone called ânoradrenalineâ.
Adrenaline
Now whatâs adrenaline? You often hear people talking about it these days, particularly in the media. For instance, an athlete may be quoted in the newspapers as saying: âI came into the home straight, and then the adrenaline really kicked in.â Or a film star may tell a journalist: âWhen I went up to collect my Oscar, I had such a massive adrenaline rush.â Also, fans of dangerous sports may refer to themselves as being âreal adrenaline junkiesâ. By this they mean that they like getting extremely excited, particularly in perilous situations.
Now in reality itâs unlikely that many of these people really know what adrenaline is, but theyâre correct in thinking that they produce a lot of it when theyâre in exciting or dangerous situations.
So what is it? Well, adrenaline is a hormone that genuinely does have quite dramatic effects on the body. These are its main actions:
⢠It speeds up the pulse rate and heart rate.
⢠It makes the heart beat more strongly.
⢠It raises the blood pressure.
⢠It opens up the pupils of the eyes (giving people a wide-eyed, staring look).
⢠It diverts blood to the muscles, and away from places where itâs not immediately needed.
⢠It narrows the blood vessels (i.e. tubes) in the skin, often making people look very pale (hence the phrase âthe blood drained from her faceâ).
⢠It increases sweating.
Note particularly those first two points: adrenaline accelerates your heart rate, and also makes your ticker beat more strongly.
Could those two actions have any relevance to Suzie Jenkinsâs case? Most definitely! But weâll come back to her in a minute.
First of all, letâs be clear about what adrenaline actually is. (Incidentally, if youâre American you may perhaps know it by the US scientific name of âepinephrineâ.) It is a hormone â that is to say, a chemical messenger. Itâs produced by your two adrenal glands. They are located just above your kidneys, as you can see from Figure 1.
Figure 1 Location of the adrenal glands
The adrenal glands are tiny. Each of them is about the size of a Brazil nut, and weighs only about the same as a teaspoonful of sugar (5 grams). The important thing to grasp is that they are very much under the control of the âunconsciousâ part of your brain.
So if you are under stress, or frightened, or simply excited, that part of your brain immediately sends messages to your adrenal glands, telling them to pour out more adrenaline.
Why? Simply because adrenaline prepares the body for urgent action. By getting the heart to beat faster and more strongly, and by opening up the tubes that carry blood to the muscles, adrenaline gets you ready for battle â or perhaps for running away. So, when one of your distant ancestors saw a dangerous animal, like a wild boar or a sabre-toothed tiger, galloping towards him, his adrenals instantly started pouring out adrenaline. Result? Within seconds, his body was ready to take on the savage creature â or else to run like blazes.
The âfright, fight, flightâ reaction
This natural outpouring of adrenaline is known as the âfright, fight, flightâ reaction, and that sums things up pretty well. Please note that this reaction is not under your conscious influence. So your mind doesnât say: âOh, letâs do a fright, fight, flight reaction here.â No, the message to your adrenal glands is sent by quite primitive parts of your brain, over which you have no real control.
Now the adrenaline-induced âfright, fight, flightâ reaction is all very well on a battlefield, or if youâre about to run the 100 metres, or if youâre going out to play in a Cup Final. It will instantly get your body ready to deal with all of these situations. But in ordinary day-to-day life, what you do not need is frequent outpourings of adrenaline. After all, if youâre trying to get on with your job, or collect the children from school, or see the bank manager about your overdraft, you donât require an âadrenaline rushâ.
What you need is to keep cal...