Note: This article should not be considered as a medical advise. Readers are strongly advised to get help from their physician and use this information presented over here as an information.
If you had blood sugar level problem in the past then you should be worrying about the same if you are getting into the HCG diet. The HCG diet can be divided into three phases. The first phase is called loading phase, the second stabilizing phase and the third phase is called as unloading phase.
In the first phase the dieter is asked to eat as many amount carbohydrates as he can. So in lay man terms you will eat every full meal till your stomach is full. As the carbs intake increases your blood sugar level will also increase. Obviously there will be a spike in your blood sugar level.
In the Second phase you are restricted to carbs. For an average dieter you will eat anywhere between 30 to 50 grams of carbs per day. The level is way below the average consumption. As you get accustomed it your body will get accustomed to this sort of carb level.
Finally in the unloading phase you will completely restrict sugar and carbs. So, in theory you will consume zero calories. Anyway by this time you will get accustomed to low carbs in your system. Hence you do not have to worry about it.
Finally, as a word of precaution if you have problem with sugar levels or you are suffering from low or high blood pressure then it is crucial that you get the help of a doctor before starting with hcg diet.