Understanding Blood Glucose levels


So you are newly diagnosed as a diabetic and you know that you have to monitor your blood sugar levels, and you know this because the Doctor told you that.

But what you don’t know is what it actually means. This should help.


Blood sugar concentration, (or in reality glucose level), refers to the amount of glucose present in your blood. Normally the blood glucose level is maintained at a reference range between about 3.6 and 5.8 mM (mmol/l). It is tightly regulated as a part of metabolic homeostasis.

WTF? Exactly what does that mean?

metabolic homeostasis basically means keeping (or regulating) the internal systems so as to keep a stable condition.

Mmol/L is the standard unit of measurement and refers to micro moles per litre and you don’t need to understand the chemistry but in case you want to know:

SCIENCE BIT:
Average normal blood glucose levels in humans are about 5mM (mmol/l) this is because the molecular weight of glucose, C6H12O6, is about 180 g/mol). The total amount of glucose normally in circulating human blood is about 3.3 to 7g – because an average human contains about 5 litres of blood. (That is just over a gallon in old money). Glucose levels vary a little during the day, rising after meals for an hour or two by a few grams and are usually lowest in the morning, before the first meal of the day (unless you are a secret midnight snacker).


So, what is this GLUCOSE stuff? Well it is carried by the bloodstream from the intestines or liver to body cells, it is the primary source of energy for body's cells, fats and oils (ie, lipids) being primarily a compact energy store, kind of like a battery. It really doesn’t mean that you should stop eating sugar, it means that you need to better control the type of food that you eat. But that is a separate story.

Failure to maintain blood glucose in the normal range leads to conditions of persistently high (hyperglycemia) or low (hypoglycemia) blood sugar. And that means that your body is not maintaining metabolic homeostasis.

A diabetic fails to maintain metabolic homeostasis and normally is hyperglycaemic and has very high glucose levels and this is often characterised by a constant thirst, with the resultant frequent trips to the loo.

Earlier on in treatment, a diabetic may also start to suffer hypoglycaemic attacks. This is often because the medication has not returned the body to stability and may well be over compensating.

So, at first, you really need to monitor your blood glucose levels, and map it against the food that you eat. That way you can see the effects of what you eat and the medication that you take.

As Alexandr would say ‘Simples’