Lean System 7 Review: Does Lean System 7 Work?

Lean System 7 (LS7) contains a proprietary blend of 7 fat burning herbal compounds (not surprising, considering its name!). The exact blend will differ slightly depending where you buy your Lean System 7. The Canadian version for instance, contains weight loss winner green tea, but not 7-keto because of a difference in laws that regulate supplements.

The U.S. Lean System 7 formula also contains green tea -- fantastic news, since there is some evidence that real green tea is a great fat burning supplement (see Mol Nutr Food Res. 2006 Feb;50(2):176-87, Am J Clin Nutr; 81:122-129, Journal of the International Association for the Study of Obesity. 2000 Feb;24(2):252-8, The American Journal of Clinical Nutrition. 1999 Dec;70(6):1040-5).

The foundation of this product lies with old standby ingredients guarana and yerba mate.

Both of these ingredients contain high levels of caffeine (as well as other xanthines) which in itself is a decent thermogenic (fat burner). Mate also displays diuretic properties, and, when combined with guarana and damiana, has been shown to delay gastric emptying and promote a feeling of satiety (fullness).

The combination of green tea and caffeine is especially helpful for weight loss, as shown in one study (see Obes Res. 2005 Jul; 13(7): 1195-204).

Lean System 7 also contains citrus aurantium or bitter orange (standardized for synephrine, ephedrine's milder, gentler cousin). Theoretically, citrus aurantium extracts should be decent fat burners since the active ingredients (synephrine and phenylephrine) are both sympathetic alpha agonists. However, real solid clinical data validating the effectiveness of this ingredient for weight loss is in short supply.

You'll also find dandelion root/leaf included for its diuretic properties (a full reveiw of dandelion root can be found here!), and bioperine, an ingredient which increases the bioavailability of certain ingredients by enhancing absorption (a full review of bioperine can be found here!).

Besides that, there's a much more interesting ingredient in this Lean System compilation, namely...

7-keto.

7-keto is a metabolite of DHEA. DHEA is a steroid hormone produced naturally by the bodies of both men and women. The good thing about 7-keto is that it displays no apparent side effects (i.e. no conversion to testosterone or estrogen, and no effect on the sex hormones). What's promising about this ingredient is its positive effect on thyroid hormone levels in obese people -- again, without any adverse effects of any kind (see Journal of Exercise Physiology, Volume 2, Number 4, October 1999).

In quoting a recent study in his superb Fat Loss Revealed (where the control group lost 0.57% of their bodyweight, and the group on 7-keto lost 1.8% - about 6 lbs on average), world renown supplement guru Will Brink says 7-keto is a potentially promising weight loss agent!

The promising beginning aside, these are clearly early days for 7-keto. More studies need to be completed to more thoroughly demonstrate 7-keto's fat burning ability.

For now, what's the bottom line recommendation?

Well, I've had the opportunity to try both the Canadian and American versions of Lean System 7. I found that LS7 worked far better than most ephedra-free products at suppressing my appetite. I don't know whether it was my imagination or not, but I thought I felt fuller for longer too. I found three capsules made me too jittery though -- the perfect dose seemed to be two capsules three times a day, as opposed to the recommended 3 capsules 2X a day.

Will Lean System 7 work for you?

Well, I can guarantee that if you don't make any changes to your diet and lifestyle, or you continue to consume significantly more calories than you need, it will not do anything for you. This is not a magic pill -- it should be used to supplement a smart diet and exercise program.

That said, there are two things I really like about this product.

First, I like the fact that Isatori guarantees Lean System 7.

There's a catch though.

You must buy it from them direct (you can do so from this link).

If you do buy Lean System 7 direct, they offer a 60-day unconditional "no-questions asked" money back guarantee (less shipping and handling). I also happen to know that Isatori is an ethical and credible company, and actually honors this guarantee. Yes...

They will happily refund your money should you be unsatisfied with your results.

No "ifs" and no "buts". No voice jail, and no "spending weeks trying to get a customer service rep." Just quality, dependable service from a company that believes in treating its customers right.

Can't beat that.

Second, Lean System 7 is one of a handful of products that has a real, credible double-blind, placebo controlled study validating its effectiveness.

I don't make product recommendations very often, but the combination of the guarantee, this company's ethics, and a credible study makes Lean System 7 a no-brainer. Besides, since Isatori will refund your money should you be unhappy with this product, you assume very little financial risk by trying it.

Just keep your original receipt though... you'll need it if you plan to do a return.

You can order lean System 7 direct from Isatori here!

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