Is the HCG diet meant for long term use? 

With adherence to protocol you can stay on HCG until you meet your weight loss goal. When people go off of the HCG diet, they should calculate their new daily caloric intake value and carry on with a new healthy diet and exercise lifestyle.  

It’s highly recommended that you don’t use hunger as your guide, often dieters can experience little to no hunger while on HCG and following the meal plan.  

This means that if you are not hungry and you fail to consume the minimum daily caloric intake you may experience low weight loss numbers, stalls in weight loss and / or fatigue.  

Less food does not produce faster weight loss. You must consume the precise micronutrient daily to ensure maximum fat loss.