How does diabetes work?

How does diabetes work
How does diabetes work

After eating food, our bodies naturally secrete a hormone called insulin into the blood, which enables us to turn the sugar (glucose) from food into energy. Diabetes mellitus is a long-term metabolic disorder caused by an inability to produce this hormone. This leads to excessive glucose remaining in the blood, where it cannot be used for energy. Insulin, which is produced in the pancreas, lowers blood sugar levels by turning glucose into glycogen for storage in the body’s cells (liver, muscles and fat) where it can be broken down into energy. This other hormone produced in this pancreas is gluccagon, which does the reverse. If there’s too little glucose in the blood, glucagon stimulates the body to release glucose from the liver into the blood, raising the blood sugar level.

There are two main types of diabetes, called type one and type two. Depending upon the type from which the individual suffers, they will either need to take insulin injections for the rest of their lives, or closely control their blood sugar levels through a strict diet respectively.

Of the two main types of diabetes, type one – also known as ‘insulin dependent’ diabetes – is by far the least common, occurring in just 10 per cent of diabetics. Type one diabetics do not produce their own insulin, so they must inject themselves with the correct dose of the hormone in order to get it into their blood stream. This type usually occurs in children and before the age of 40.

Type two diabetes is for more prevalent. People with this condition are known as ‘insulin resistant’, because they either do not produce enough insulin (which encourages the liver to release its stored glucose into the blood) or their cells don’t react to it in the way they should. Type two diabetes can be controlled through healthy eating and closely monitoring blood sugar levels, but often tablet medication may also need to be taken. Overweight people are more at risk of developing type two diabetes, because fat around the belly releases chemicals that disrupt the metabolic system.

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