I have lost over 60lbs on the HCG Diet and have kept it off for the better part of a year! It works but you have to floolw it to exactly as instructed in the original diet. – No do not start while on your period. Wait till the day after and then start. The hormonal balance during your period is all out of whack and starting the HCG Diet during this time is not harmful but is not effective. It will essentially be a waste to try and start till after your period ends. – Remember, 1lb of fat is the equivalent of 3500 Calories! So as you body enters into Ketosis (the process of burning fat for fuel) you body will be able to burn as much as 4000 calories per day of your own body’s fat reserves to make up for the small amount of calories your eating! Furthermore, HCG has been shown to be a natural appetite suppressant. – Weight loss varies according to many factors including wage, gender, physical condition, and individual body makeup. You can expect an average weight lose between .5 1.5lbs per day. However, the Ketosis process works on a 2-3 days cycle. That is as your body burns fat for energy it doesn’t burn the now empty fat cell or the surrounding tissue all at the same time. Instead it will fill the empty cell with water till it gets around to burning up the cell over the 2-3 days. So, you may find that you go a day or so with little or no weight loss and then wake up one morning and lose 1-3lbs from the day before! This is because your body final passed the water it was using as a placeholder! This is why you need to drink TONS of water or green tea while on the diet. It will make sure you body is super hydrated and it will flush out some of the Ketones produced by burning fat for energy through Ketosis. By flushing out the Ketones your body will be forced to burn more fat to make more Ketones for energy! Thus, as I like to say the More you Pee, the More You’ll Lose – During the HCG Diet your body will be searching for fat to burn for energy! You want it to burn the fat reserves in your body, right? So we want to limit the amount of fat it finds to only the fat reserves we want to burn and we do that by eating no fat or oils and not using any oils, lotions, or fats on our skin since some of that will be absorbed into the body. HOWEVER, you can use oil free makeup and mineral makeup without an issue. I hope this helps! Check out my sources for more info. Also feel free to contact me if you have any other questions.