I have to disagree with a lot of what JohnP has posted. This thread is specifically called MEN
ON IP. I'm sure intentions are good, but I dont agree with aggressively trying to talk someone out of a diet because of hearsay instead of going to the source and reading Dr. Tran's book or asking questions to folks who have been on the diet. (Both successfully and unsuccessfully and find out why.)
But regarless of "facts", what it boils down to is:
"Does it work for me" and "What is the experience like."
And my this case, it has been a resounding YES IT WORKS FOR ME. I lose between 4-10 lbs a week (7-10 or more the first two months. An average of 5+ after that). And what's it like? I have regained my "old life" and have never eaten so healthy or so well.
I also am a type 2 diabetic who was at max meds before starting the diet (with my blood sugar levels rising) who is now on minium meds infrequently for over 2 monhts with excellent consistent levels.
I have been on Ideal Protein for about 3 months and have lost 58lbs. Without increasing my excersising and still enjoying REAL food every day.
I have been on a lot of other diets through the years... SlimFast, Nutrisystem, Jenni Craig, Weight Watchers to name a few... and nothing worked as well or as fast as Ideal Protein does for me. (Atkins actually worked for me, but I got too many headaches and the amount of fats it allowed made me uncomfortable. But I also thought it worked well.)
There is a science behind the diet which is included in the free pdf someone else posted from the doctor who started the diet. The more I read about it and WHY it worked (or didnt work) helped get my mind around how I could be successful.
I actually dont think this diet is for everyone, because it does restrict what you can eat and not everyone is able to have the willpower to do that. But the reason I think it is great for guys is because you can see results within the first week and visably feel the difference the first month. The speed of the weight loss was a huge benefit to keep motivation and dedication high.
It is working literal miracles for me and allowing me to enjoy fantastic, hearty, healthy meals every day.
If you dont believe me, feel free to check out the Facebook page I created to log my eating journey on the diet. Its just recipes with pictures that I took myself so other dieters can see real shots of exactly what the food looks like as well as how to make it. All photos and recipes are approved for Phase 1 (the starting phase) so there's no tricks of great things you cant eat until later.
Check it out.
http://www.facebook.com/idealproteinlohja
Is it expensive? Yes... but I have been so desperate to lose weight I was contemplating surgery which isnt healthy or long-term helpful. the cost vs what I have lost in weight and gained in new habits cant be measured. I also honestly feel that the higher cost is a huge motivation for not cheating. If you know that Ben & Jerrys will knock you out of ketosis and take 2-3 days to get back in, its like throwing away 6 packets or more of food. Thats a lot easier to justify when you arent paying for it.
But whatever diet you choose, I wish the best success to find something that works for you.