alli has sold over 2 million starter packages to date (and adding tens of thousands every week). That's a lot of people learning how to eat better (fewer calories in) and get more active (more calories burned).

As Margaret Meade said, "Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has." 

I'm following anecdotally (I can't read everything) what the hundreds of thousands of people who started using alli in June have to say about this new and unique combination of a fat blocker and food education program. To date, over 100,000 messages have been left on the official alli message board. Over 5 million unique visitors have visited the product Web site, myalli.com.

In addition, tens of thousands of users are talking to each other about alli in blogs and online discussion groups they've formed themselves. One of the biggest is alli allies on Weight Watchers. See our new blogrolls in the right-hand column for more links to online communities.

Can these two million alli users change the way Americans define meaningful weight loss and how best to go about it? Can a committed group of Americans combat weight loss myths? Is it a revolution yet??

P.S. The screen grab above is from our public service Web site questioneverything.com (short for "question everything about weight loss"), which started the ball rolling before alli launched by providing food education and provocative discussions about weight loss myths.

If you have a question about the alli program, let me know.

N.B. See this new GSK study reporting on product satisfaction from controlled clinical trials.

It's a legitimate question. Is alli really needed? If eating low-fat (and fewer calories) and exercising more is the best route to weight loss, then why, really, do you need a pill like alli to help you along?

I'm hearing this question asked in numerous ways, both online and off. I heard it asked in a focus group last week. A doctor blogs about it here.

Here's my answer: If you're going to make a serious, extended effort to cut calories and fat, and to get more physically active, then WHY WOULDN'T YOU add alli? To put it another way, why wouldn't you go for a 50% better return on your weight loss effort?

If you're buying 10 gallons of gasoline, would you turn down a free coupon for an extra five gallons?

If you think about how alli works (it blocks about 25% of the fat in your meal, helping you lose 50% more weight), then not taking alli is like turning down a coupon for five extra gallons when you're already paying for ten gallons of gasoline. Or turning down the 50% more free toothpaste in that bonus tube. Obviously, using alli is not as simple as brushing your teeth or buying gasoline. You have to read the label to make sure alli is right for you. But, the point is still the same. In simplest medical terms, alli helps enhance the calorie deficit that is necessary to lose weight. 

I can tell you that I appreciated the extra help when I used orlistat (the active ingredient in alli) to lose 60 pounds over three years (I've kept it off).

By the way, here's a useful resource on Revolution Health that intelligently offers pros and cons about using alli. And not to sound like a commercial but I have to say it: more about whether alli is right for you on myalli.com (safety information and FAQs).

And if you've got a better analogy for "why use a pill" than gasoline coupons or toothpaste, let me know.