Supplements used for weight loss usually contain a variety of ingredients, such as coffee extract caffeine, green tea extract, L-carnitine, dietary fiber, etc.
Weight loss is generally achieved through the following mechanisms:
1. Appetite suppression:
Some supplements reduce appetite and increase satiety by sending signals to the brain center through the sympathetic nerves to regulate the level of certain neurotransmitters.
2. Some ingredients work in the digestive system to reduce fat absorption.
Beta-glucans increase satiety and gastrointestinal transit time, slowing glucose absorption.
Konjac extract powder mainly contains glucomannan, which can absorb water and swell to become a viscous gel that can bind and soften intestinal food residues.
3. Increase fat burning:
Certain substances can promote fat burning and decomposition by increasing metabolism or directly affecting fat cells.
Caffeine stimulates the central nervous system, increasing heat production and fat oxidation.
Carnitine may moderately reduce weight by increasing fatty acid oxidation.
White kidney bean extract acts as a "starch blocker" to interfere with the decomposition and absorption of carbon water.
Green tea extract can increase energy consumption and fat oxidation, and reduce fat production and fat absorption.
When choosing a supplement, in addition to considering what the active ingredients are and how they work, you also need to consider the amount of functional ingredients. Green tea extract catechins, white kidney bean extract, whey protein, coffee extract caffeine, chlorogenic acid, etc. are all widely recognized ingredients that can be used to help reduce weight.
Now, there are also some newly developed drugs that can help with weight management, such as Tirzepatide and Semaglutide.
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Reference
[1].Watanabe M, Risi R, Masi D, Caputi A, Balena A, Rossini G, Tuccinardi D, Mariani S, Basciani S, Manfrini S, Gnessi L, Lubrano C. Current Evidence to Propose Different Food Supplements for Weight Loss: A Comprehensive Review. Nutrients. 2020 Sep 20;12(9):2873. doi: 10.3390/nu12092873. PMID: 32962190; PMCID: PMC7551574.
[2].Goldstein, E.R., Ziegenfuss, T., Kalman, D. et al. International society of sports nutrition position stand: caffeine and performance. J Int Soc Sports Nutr 7, 5 (2010). https://doi.org/10.1186/1550-2783-7-5
