iSatori, the makers of Lean System 7, state on their website that Lean System 7 offers 450% more weight loss than dieting alone. This is an impressive number. Their website also boasts that there are over 1,000,000 satisfied users of Lean System 7. The testimonials that appear on the corporate website all support these claims, and the research completed by Minnesota Applied Research Center supports it as well (it is important to note that the study was funded by a research grant given to the University by iSatori. This could cause a conflict of interest).

Lean System 7 is a weight loss supplement that contains a proprietary blend of 7 supposedly fat burning herbs including guarana, green tea and yerba mate. Another interesting ingredient in Lean System 7 is 7-Keto, which is a metabolite of the hormone dehydroepiandrosterone (DHEA). DHEA is an important hormone because it can reduce body fat while improving the immune system and providing anti aging benefits. By using the DHEA found in 7-Keto, you get the added benefit of avoiding the conversion of the hormone into testosterone or estrogen. This means you get no weird side effects like facial hair growth.

Natural 7-Keto levels in the human body begin to reduce by your mid twenties which may cause the accumulation of fat as you age, and the resistance of that fat to leave you. With Lean System 7, you have the benefit of upping these levels and creating a leaner figure. The process that 7-Keto puts your body through in order to rid it of fat is called thermogenesis. Using thermogenesis, 7- Keto creates a heat based energy which causes you fat cells to release and burn stored glucose. 7-Keto can not create the thermogenesis on its own; it simply stimulates the enzymes in your liver that oxidize fatty acids.

Lean System 7 promotes another of its ingredients, yerba mate, as a natural stimulant. Yerba mate is a natural stimulant in as much as coffee beans are natural stimulants. Yerba mate is a highly caffeinated leaf. Since it has caffeine, it can boost your energy and may have a slight impact on increasing your metabolism.

Green tea is another caffeinated ingredient within Lean System 7. Green tea also has an anti oxidant effect if enough of its EGCG is in a product. Unfortunately, we do not know how much EGCG is in Lean System 7.

Guarana is a popular weight loss supplement right now. Guarana is a berry that grows in the Amazon and has five times the amount of caffeine as a coffee bean. Some preliminary, unpublished studies have shown that yerba mate and guarana together can increase a user’s metabolism. However, it is important to consider that the amount of caffeine in yerba mate and guarana (as well as the green tea found in Lean System 7) may cause severe side effects such as a jittery feeling, nausea, insomnia, and gas.

It is difficult to do all the research that is necessary to weed through the available weight loss supplements, appetite suppressants, fat blockers and carb blockers that are out there. It is, however, extremely important that you do. Researching the individual ingredients can teach you a lot about the pill you are about to ingest. Whenever you begin a new diet or exercise routine, especially one that involves a dietary supplement like Lean System 7, you should consult a physician first. Depending on your individual health history and the prescriptions you take, it may not be a good idea for you. Your doctor will tell you if there could be any unfavorable drug and supplement interactions.