The human body is comprised of a series of systems, which working together, enable it to work efficiently. One example of this is the circulatory system – where would we be without blood?

Other examples are the sympathetic and parasympathetic systems which are themselves sub-divisions of the central nervous system.
Another, very important system is the endocrine system, which is primarily responsible for the production of hormones, which are naturally occurring chemicals. These hormones are produced in structures called glands – and one of those glands is the thyroid gland.

The thyroid gland has a principal role to play in our metabolism, another system that facilitates the conversion of the food we eat into energy, amongst other things.

The thyroid produces certain hormones which, working with other chemicals, regulate the rate of conversion.

It is important that all these system remain balanced – if any go out of balance, problems will follow. So it is with the thyroid – an over active thyroid (hyperthyroidism) can lead to illness, as can an under active thyroid (hypothyroidism).

Overweight people often claim that they have a slow metabolism, using that as an excuse for being overweight. The likely real reason for being overweight is that they eat too much and do not do enough exercise. That said, it is possible that their thyroid isn’t working properly and it will never do any harm to have it checked out by a qualified doctor. If there is a problem, medication will be prescribed.

Assuming that the doctor has treated (or ruled out) a problem with the thyroid, the next stage is to look closely at what you eat, and when you eat it. In short, this involves eating smaller meals but not necessarily eating less (though if you are overweight, that will help). Eating this way will keep your metabolism going at a steady rate. You might even improve the quality of your diet at this stage.
The next stage is to start doing some exercise.

You do not have to join a gym – just start walking, a little further each day. However, if you do join a gym, and go regularly, you will soon see some improvement in your fitness levels. Set yourself a manageable achievable program; perhaps even get a personal trainer.

Take it easy to start with some cardiovascular exercise (walking or running or cycling) but don’t go for the burn. A good rule is little and often but build up steadily. Keep a record of what you have done. You will soon see an improvement in your fitness levels, body shape and energy – proof that it works!

Cardiovascular exercise is great but not really enough – you need to do some weights and, if you do, you will start to build muscle. Don’t overdo it or you will injure yourself but, eventually, your leaner muscles will burn more calories, and your metabolism will adjust itself to work harder and provide your increased energy needs.

You are not aiming to become super-fit, just fitter and healthier. One final thing – while eating and exercising drink plenty of water – do not confuse hunger with thirst.

So, to recap, an under-active thyroid (hypothyroidism) can be dealt with by a good diet, properly balanced, and a suitable program of exercise.