If blood sugar levels fall or rise abnormally in someone with diabetes, they’ll experience a variety of symptoms.

Hypoglycaemia
Hypoglycaemia is when the blood sugar levels fall below normal. Glycaemia measures is the level of sugar in blood.

Hypoglycaemia may occur:
- after an insulin injection
- after taking oral diabetes medication
- if a meal is missed or delayed
- after strenuous exercise
- if alcohol is drunk on an empty stomach

The symptoms of hypoglycaemia vary from person to person. Mild hypoglycaemia may cause:
- weakness
- dizziness
- sweating
- hunger
- shaking
- irritability
- mood swings

A mild hypoglycaemia can usually be treated with some form of sugar. Types of sugar to use during mild crisis :
- dextrose tablets (carry these if you have diabetes)
- three sugar lumps
- two teaspoons of sugar
- chocolate or sweet biscuits
- a sweet drink

When the blood glucose level falls even lower, then the person may behave strangely and become confused (often mistakenly interpreted as drunkenness). Under these circumstances it may be easier and quicker to give sugar in liquid form, such as a sweet drink.

In severe hypoglycaemia, the person loses consciousness. Under these circumstances an injection of glucagon is given, which temporarily raises the level of blood glucose. Once the person is conscious they can be given some sugar and a snack to prevent the hypo from recurring.

Always have sugar tablets or another form of sugar available

People with diabetes and those close to them are taught to look out for signs that their sugar level may be low, and are advised to always have sugar tablets or another form of sugar available to raise the level quickly. This solves the problem quickly and prevents serious consequences.

People with diabetes are advised to carry some form of identification saying that they have diabetes, so that people will realise their condition should they get into difficulty and need help.

Hyperglycaemia
Hyperglycaemia is when the blood glucose level is too high. When it’s mildly raised then symptoms of uncontrolled diabetes occur, namely excessive thirst, passing urine frequently, tiredness, weakness and lethargy.
If the blood glucose level becomes dangerously high then the person becomes dehydrated and may become comatose. This is a medical emergency that requires hospital treatment.

Normal Blood Sugar Levels

The following guide for “normal” blood sugar levels is given in “Prescription for Nutritional Healing (4th Ed)” by certified nutrional consultant Phyllis A. Balch (a highly recommended book for your home library – see link under recommended reading).
Note: to convert mg/dL to mmol/L, just divide these figures by 18.
eg 110 mg/dL / 18 –> 6.1 mmol/L

A bad day for your cholesterol levels
In this bad day, you do not take a breakfast or a snack in the morning. Your body starves and starts harvesting fat from your body. Your lunch is heavy and your carbohydrates levels shoot up to unacceptable territory. Your body must produce insulin to bring levels down and this makes you fell tired.

What Is Blood Sugar?
Your blood sugar level, or blood glucose level, refers to the concentration of sugar (in the form of glucose) in your blood. The unit of measurement is millimoles per liter (mmol/L).

Why is there sugar in the blood?
Every time you eat food, your body has the task of breaking that food down into a useable form of energy it can use to keep you functioning properly. All foods are (generally) made up of carbohydrates, proteins, fats, vitamins, minerals, fiber and water. Carbohydrate rich foods give your body its main form of energy. They get broken down into glucose and move into the bloodstream where they are absorbed by cells for use or storage. Glucose, or “blood sugar”, is likened to “the gasoline that is essential to make your car run”.

Why would i need to manage my sugar blood levels?
Your body needs a constant supply of carbohydrates during the day and you should be aware of your blood carbohydrates levels.
During the day there are two types of problems that can occur that are carbohydrate related.
a) your blood does not have enough carbohydrate during the day : your body will start break down the fat that you have stored to produce carbohydrate. This is done at the expense of releasing toxins which are not good for you. This is also tapping in your body mass and the fat stored in your muscles.
b) you blood has too much carbohydrate : Probably after a big meal or you’ve eaten too much sweets. Your blood now has too much sugar which risks to harm your body, so Insulin is released in your blood to bring down sugars to an acceptable level. Producing insulin is a tiring experience and during this time you will feel sluggish.

Why Blood Sugar Levels Change During The Day
Your blood sugar levels vary during the day/night. The direction it varies (up or down) is due to a number of factors such as those listed below:
1. Eating food :  As the carbs in food break down, glucose is released into the bloodstream ready to be absorbed by cells. Increased glucose in the bloodstream = higher blood sugar level.
2. Exercise : Exercise provides many benefits to your body, including burning excess sugar and reducing insulin resistance (by making cells more receptive to insulin, so rather than requiring more insulin to facilitate glucose uptake, the insulin you already have becomes a bit more effective). However the effect on blood sugar depends on the type of exercise, the duration of exercise, glucose and insulin levels before you start exercising.
During long, intense workouts the body may release adrenaline which counteracts the efforts of insulin. The normal process for blood sugar would be to be absorbed by cells (via insulin) for utilization or storage. Adrenaline causes the glucose to be redirected to where it is required for use immediately rather than for storage. Read more here.
3. Your physiology : The fitter you are the better. More specifically, if you have a greater muscle to fat ratio, you will burn energy at a faster rate and therefore be more effective at reducing your blood glucose level. Also, muscles do not rely on insulin to absorb/use blood glucose – same goes for the brain.
(My sister gave me this great analogy – imagine a small muscle and a large muscle contracting at the same time. Which one would use/burn more energy to contract? The big one, simply because it is a bigger muscle!)
4. Emotions : Stress increases your blood glucose level. It also causes some people to forget to take their medication, turn to comfort foods, overeat and therefore introduce a higher than normal amount of glucose in the blood.
5. Sleeping : People often talk about “dawn phenomenon” with regard to diabetes, where your blood sugar level spikes in the mornings as a result of the body releasing hormones which increase insulin resistance (perhaps). The cause of this is unknown. However, another explanation could be a slow metabolism of dinner from the night before. Some research also suggests that not getting enough sleep causes the liver to produce/release more glucose, hence increasing your blood sugar levels.
6. Medications : Obviously, the medication you take regulates your blood sugar level and therefore your readings during the day, depending on when you took the medication.

Diet and exercise can keep diabetes at bay for a decade, cutting the risk for the disease by more than a third in the most susceptible people, a new US study finds.
In the UK one person is diagnosed with diabetes every three minutes and three people die from its complications every hour.
Most people have type 2 diabetes, which is linked to poor diet and sedentary lifestyle. In addition, a lot of adults have higher-than-normal blood sugar levels, which raise the risk of a heart attack or stroke and the likelihood of developing type 2 diabetes.
But new research, published in the Oct. 29 online edition of The Lancet, shows that losing weight and exercising can delay or prevent the onset of diabetes more effectively than the prescription drug metformin or a placebo.

“Interventions that result in weight loss lower the risk of diabetes, and that lower risk appears to persist for a long period of time,” said study author Dr. William C. Knowler of the U.S. National Institute of Diabetes and Digestive and Kidney Diseases.

For people who are at high risk of getting diabetes, losing weight “is clearly to be recommended,” he said. In addition, using a drug like metformin may also benefit people unable to lose weight through exercise and diet alone, he said.

About the study
For the diabetes prevention study, 3,234 overweight or obese adults with elevated blood sugar levels were randomly assigned to either lifestyle changes or metformin to control their blood sugar, or a placebo.
After 10 years, 2,766 remained in the trial, and those taking metformin saw an 18 percent reduction in their rate of developing diabetes, compared with those on placebo.

But those who had made lifestyle changes — reducing caloric and fat intake and exercising at least 150 minutes a week — reduced their risk of getting diabetes by 34 percent compared with those on placebo, the researchers found.

In the first year of the trial, people in the lifestyle group lost an average of 15 pounds, regaining all but about five pounds over 10 years. People on metformin maintained a five-pound weight loss, and those on placebo lost less than two pounds over 10 years, the researchers note.

Over 10 years, after all the participants made lifestyle changes, the yearly diabetes incidence rates for the drug and placebo groups had dropped to about 5 to 6 percent, the same rate as the lifestyle group.

“Lifestyle intervention, even when provided later, also seemed to lower diabetes incidence rate,” Knowler said.

Loosing weight is difficult
But losing weight is difficult, and simply telling someone to slim down won’t work, he acknowledges.
“To make things like this happen on a large scale, we have to do more than simply tell people to lose weight,” he said. People need access to weight loss clinics that can teach them about diet and exercise, he added.
Dr. Anoop Misra, director of the department of diabetes and metabolic diseases at Fortis Hospitals in India, and author of an accompanying journal editorial, said that “prevention of diabetes is important to curb epidemic of diabetes globally. Diet and exercise remain the most important modalities to prevent diabetes, and any drugs are less important.”

Targeting groups at risk
At-risk groups of diabetes need to be identified, especially certain ethnic groups, and taught proper lifestyle management strategies, Misra said. “Young adults with family history of diabetes should be carefully managed along the same lines,” he said.
Diabetes prevention makes economic sense as well, by decreasing costly, lifelong expenditures on management of the disease and its complications, Misra said.
All nations, particularly developing countries, seeing a rapid rise in diabetes should devise or strengthen a national diabetes-control program to help curb the epidemic, he said.
“In particular, regulations should apply for advertisement and sale of energy-dense junk food to children, and regular physical activity should be encouraged starting at a young age. Spreading awareness about proper lifestyle and adverse consequences of obesity and diabetes should be at the top of health agenda of all nations,” Misra said.

Getting results
Regarding the study findings, other experts are optimistic. Dr. Ronald Goldberg, a professor of medicine at the Diabetes Research Institute of the University of Miami Miller School of Medicine, whose institution participated in the study, said that “seeing quite significant effects lasting this long really bodes well for the utility of these interventions for diabetes prevention.”
Cutting calories and increasing physical activity clearly slow the progression to diabetes, Goldberg said. “Lifestyle works, and every effort needs to be made to begin and maintain a lifestyle program in the long-term.”