Verified reviews of Lean Mode fat burner are
pretty mixed. This fat burner only has 50% five-star ratings on Amazon, which
is low in comparison to the top-rated fat burners. We would expect around 70%
positive reviews for a decent product.
Many of the positive reviews of Lean Mode
reported an increase in energy and a reduced appetite. The energy is probably
from the green coffee bean extract, which contains caffeine, albeit in lower
amounts than in normal coffee. On the upside there weren't many complaints about leanmode side effects aside from that which we'd expect from caffeine.
Negative reviews of Lean Mode simply said it
didn’t work, although some also reported an upset stomach. Even many of the
three-star reviews stated that the product didn’t work…we’re not exactly sure
why anyone would give something that doesn’t work three stars, but ok.
Green Tea Leaf Extract (500mg) - Green tea is a decent weight loss supplement but we’ve always cautioned against it being one of the main ingredients in a fat burner. It has positive effects on metabolism, increasing it slightly, and it has thermogenic properties that also help to burn more calories. Suggested doses ranged from 300-900mg. The 500mg dose in Lean Mode should be sufficient to experience green tea’s weight loss benefits.
Green Coffee Bean Extract (500mg) - Derived from coffee beans that have not been roasted, green coffee bean extract is a popular weight loss supplement. It contains chlorogenic acid, which roasted coffee beans do not due to the effects of the roasting. Chlorogenic acid is thought to inhibit alpha-glucosidase, an enzyme that breaks down carbohydrates. By preventing this enzyme from working, chlorogenic acid prevents the body from absorbing carbs and glucose. This theory is supported by some evidence, including a study that showed a reduction in glucose absorption in a small sample group of 12 participants [1]. While the sample is small, it does indicate that green coffee bean extract might be beneficial for weight loss.
CLA (Conjugated Linoleic Acid) (500mg) - A natural fatty acid CLA is often mentioned as a weight loss supplement and can be found in several fat burners. However, evidence for CLA’s impact on weight and weight loss suggests it is only marginally beneficial. Studies on animals showed very promising results, but when studies were conducted on humans the same benefits did not seem to apply [2]. What’s more, these minor benefits only occur when CLA is taken at very high doses of around 3g per day, which means the dose included in Lean Mode is not likely to have any effect.
Acetyl-L-Carnitine (500mg) - Responsible for helping the body turn fats into usable energy, Acetyl-L-Carnitine is thought to be beneficial for a range of diseases and conditions including Alzheimer’s. Theoretically, it should be good for weight loss, since more Acetyl-L-Carnitine means more fat is turned into energy, but not many studies have suggested a direct connection and things are not always so straightforward in the body. One study showed weight loss from the supplementation of l-carnitine—a derivative of the substance in question—when coupled with exercise [3]. But more evidence is needed to confirm that Acetyl-L-Carnitine is a decent fat-burning supplement. What’s more, recommended doses start at 1.5g per day, three times the dose included in the LeanMode fat burner.
Garcinia Cambogia Extract (250mg) - Thought to be an appetite suppressant and to prevent the body from creating fat storage, garcinia is sometimes found in weight loss supplements. There is some evidence that garcinia can aid weight loss, however, studies show that the results are minor and only short-term [4].
References
1. Thom, E. (2007) The effect of chlorogenic acid enriched coffee on glucose absorption in healthy volunteers and its effect on body mass when used long-term in overweight and obese people. Available at: https://pubmed.ncbi.nlm.nih.gov/18035001/
2. Whigham, L., et. al. (2007) Efficacy of conjugated linoleic acid for reducing fat mass: a meta-analysis in humans. Available at: https://pubmed.ncbi.nlm.nih.gov/17490954/
3. Talenezhad, N., et. al. (2020) Effects of l-carnitine supplementation on weight loss and body composition: A systematic review and meta-analysis of 37 randomized controlled clinical trials with dose-response analysis. Available at: https://pubmed.ncbi.nlm.nih.gov/32359762/
4. Onakpoya, I., et. al. (2010) The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010674/