By Dr John Demartini – author, educator and world-renowned behavioural specialist

During my years in private practise I noticed many repeated correlations between mental attitudes, emotions, bodily signs and responsive symptoms we refer to as illness.  There seemed to a consistent mental – physical coding, a connection between the mind and the body. 

From 39 years of in-depth research into human behaviour, I learnt that what you perceive actually impacts your physiology and your physiology reveals your psychology.

I define illness as the result of an imbalanced perspective and wellness as one of a balanced perspective. Wellness means wholeness. Illness means ‘halfness’. If you perceive you are receiving more support than challenge or more challenge than support, you get illness. If you see a synchronicity of support and challenge simultaneously, you get wellness.

Your mind, through its value system, filters your sensory reality and motor actions. Every time you go through life and exaggerate or minimize (lop-side) your thinking you are creating physiology labelled as illness.

Illness creates symptoms as a feedback system to your conscious mind to let you know that you have one or more lopsided perceptions. The second you balance your perceptions, your physiology changes and you return to wellness.

So you can see that your perceptions play a pivotal role in your wellbeing.

When you perceive an event to be supportive of you or your highest values, you will tend to open up to it.  When you perceive an event to be challenging to you or your highest values you will tend to close down to it. This has an impact on your metabolism and your physiology.  It is then turned on or off accordingly depending on the initial perceptions of support or challenge.


If you feel depressed and you perceive the world is not supporting you, your metabolic rate will tend to slow down. Your glucose can also go down and you may end up with low blood sugar.

Psychological perceptions also correlate with high or low pancreatic function. People with hypoglycaemia have low blood sugar. Hypoglycaemics tend to minimize themselves to others and often think that they are wrong and other people are right. They will often do what you tell them to do.

People with diabetes, on the other hand, have high blood sugar and are hyperglycaemic.  They tend to maximize themselves to others and tend to think that they are always right and often display what we perceive as arrogance. They are not easy to tell what to do and they have their own way of doing things.


The same principle applies to hyper and hypo thyroid. Your thyroid gland originates from your tongue embryologically. This is why its function has a direct correlation with your metabolic rate because the tongue deals with chewing, eating, swallowing and speaking.

If you feel like you have said something you wish you hadn’t, your thyroid function tends to go up.  If you are not saying something you wish you could, your thyroid function tends to go down and your metabolic rate drops. That is why hypo-thyroids are often listless, quiet and don’t speak much. They tend to hold in a lot of resentment and they hold in what they really want to say. The hyper-thyroids tend to talk and speak and are generally more outgoing and extroverted. These physiological polarities are as a result of imbalanced perceptions and you are literally affecting your physiology with your perceptions.

if you exaggerate or minimize things with your perceptions; you are automatically changing your physiology, changing the blood sugar levels, changing lipid levels and hormone levels.


Again, your hormone imbalances often have a lot to do with your perceptions of the world. If you are feeling passive, safe and secure in your higher values or what’s most important to you, your female hormones go up. If you have to deal with fight or flight – you are aggressive and you feel like the world is challenging you, your male hormones go up.

Your feminine hormones stimulate fat and male hormones stimulate water and muscle levels in the body. On the one hand your body becomes ‘harder’ and on the other your body becomes ‘softer’.

The many symptoms that you experience in your body are your body’s way of trying to reveal the areas in your life where you have imbalanced perceptions. So disease is not necessarily a ‘bad’ thing and it is wise to discover the underlying meaning. If you bring your perceptions into balance, you can normalise your physiology and your body will return to wellness.

For more information on the mind and body connection go to

To receive a complimentary audio presentation by Dr Demartini titled: Staying Focused on Goals, visit


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