Blood sugar is the measurement of glucose in the blood. Normal blood sugar is required to live a vigorous and happy existence. Normal blood sugar is very much important in our body, since most of the body tissues depend on blood sugar for their energy, especially the nerves and the brain. A normal blood sugar level range from 70 mg to 150 mg (in between them). And, it is clear that an abnormal blood sugar level would be the one that falls above or below the above mentioned numbers.

Typically, the blood sugar levels fluctuate in the body with the aim of balance. Thus, it is very common to find highest level of blood sugar just after you have eaten and lower when you are hungry.

When they are at lower levels, you are likely to find yourself dizzy, irritable, or having a headache. If these symptoms of low blood sugar levels are found in a person, the problem is more prevalent in people with diabetes who use insulin. The use of too much insulin can send more glucose in the bloodstream than the amount it needed.
Due to this, the blood sugar levels go down, and such a condition is known as hypoglycemia. If this is left unchecked, it can lead to coma or even death.

The opposite condition to hypoglycemic is hyperglycemia. This is situation of high blood glucose. It develops when there is too much sugar in the blood. Like hyperglycemia, it also cause problems for people with diabetes. If a diabetic person has hyperglycemia for long period of time, this can cause damage to their nerves, blood vessels and various other body organs.

Various other conditions that can occur with high as well as low blood sugar levels, include hyperinsulinism, functional hypoadrenia, and malabsorption. Following are a few symptoms of imbalances blood sugar levels in body:
  • Fatigue
  • Allergies
  • Headaches
  • Numbness in arms and legs
  • Shakiness
  • Visual disturbances
  • Dizziness/ light headed
  • Shortness in breath
  • Sensitive to bright lights
  • Rheumatoid-type of pain
  • Loss of libido
  • Backaches
  • Emotional sensitivity