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Alternative therapies: Part I. Depression, diabetes, obesity
1Louisiana State University School of Medicine in New Orleans, USA.
American Family Physician
|September 21, 2000
Summary
Many natural supplements lack robust scientific evidence for efficacy. While some, like St. John's wort and S-Adenosylmethionine (SAMe), show potential for depression, others like garlic and soy require more research for diabetes management.
Area of Science:
- Integrative and Complementary Medicine
- Pharmacology
- Metabolic Disorders
Background:
- Natural supplements are popular in the US, but their therapeutic claims often lack strong scientific validation.
- Existing research presents mixed results regarding the effectiveness of various supplements for different health conditions.
Purpose of the Study:
- To review the current scientific evidence supporting the use of popular natural supplements for various health conditions.
- To identify supplements with potential therapeutic benefits and those requiring further investigation.
Main Methods:
- Literature review of studies on natural supplements including St. John's wort, SAMe, garlic, bitter melon, soy, fenugreek, chromium, alpha lipoic acid, ma huang/guarana, and hydroxycitric acid/garcinia.
- Analysis of reported efficacy and side effects based on available medical research.
Main Results:
- St. John's wort exhibits weak SSRI activity with fewer side effects; SAMe shows antidepressant potential warranting further study.
- Supplements like garlic, bitter melon, soy, and fenugreek need more human trials for diabetes management, though chromium shows promise.
- Alpha lipoic acid is noted for diabetic neuropathy treatment. Ma huang/guarana combinations for obesity have unconfirmed effects and potential risks. Hydroxycitric acid/garcinia combination was ineffective.
Conclusions:
- The efficacy of many natural supplements is not consistently supported by rigorous scientific research.
- Further clinical studies are essential to establish the safety and effectiveness of numerous natural supplements before widespread recommendation.
- Specific supplements like St. John's wort, SAMe, and alpha lipoic acid show preliminary promise, while others require significant further investigation.