Early symptoms in diabetics patients

For people who have not been exposed to the diabetes is often asked whether the symptoms are easily we can observed or peoples around us so that we can see whether we need to go to the doctor for further examination. Some of the symptoms are frequent and common in diabetic patients is:
Always feel thirsty and very frequent urination
These symptoms are caused by increased levels of glucose in a person's blood so that the body will take the fluid in the cell body.
Always feel hungry
Glucose can not be changed as energy by the hormone insulin in our bodies will cause us often feel hungry when we have eaten enough.
The body can easily feels tired
Because our bodies lack the energy then we will feel tired after doing a mild activity.
Drastic Weight Loss
These symptoms are caused due to the activities we get energy from the breakdown of fats and proteins so that the glucose that is not utilized.
Changes in daily behavior (easily feels stress)
As a result of lack of energy and is easy to feel hungry so we will easily stressed and often angry for no apparent reason.
The wound does not dry quickly and the blackened scars
Excessive glucose in the blood inhibit wound healing process.
Often feel tingling and vision is not clear
Excess sugar levels in the blood can damage nerves in the human body. People with diabetes will often experience numbness and vision problems.

If we or any of our families experiencing the symptoms mentioned above should we do the examination to the doctor / hospital or clinic so that we would be assured if we are affected by diabetes or not.