Is hcg diet dangerous?

Doesn't sound safe: The HCG diet has a person eating 500 calories a day for more than a month. That's just one big slice of pizza a day. A 4-month old baby eats 500 calories a day. Anybody on 500 calories a day is on a starvation diet and will lose weight. It doesn't sound safe. Extremely low calorie diets don't work because the weight comes back when one starts eating again. Long-term lifestyle changes are needed.

Its probably safe: It will raise testosterone levels in men. The HCG diet has had side effects, but those are due to rapid weight loss (gall stones) and eating only 500 calories per day, starvation is not a great plan. I doubt the HCG itself causes many or any problems if used in low doses.