다이어트 보충제: 효과 있는 것, 없는 것, 위험한 것
빠른 답변: 대부분의 다이어트 보충제는 강력한 과학적 근거가 부족합니다. 어느 정도 근거가 있는 성분: 카페인(대사율 3-11% 증가), 녹차 추출물(EGCG, 약간의 지방 산화 촉진), 글루코만난(식이섬유, 포만감 증가), 공액 리놀레산(CLA, 평균 주당 약 0.1kg 체지방 감소). 효과 제한적이거나 무효한 것: 가르시니아 캄보지아, 라즈베리 케톤, 사과식초 캡슐. 위험한 성분: DNP(디니트로페놀, 사망 가능), 에페드린(심혈관 위험), 불법 처방약 성분이 첨가된 "천연" 제품. 핵심 결론: 어떤 보충제도 칼로리 적자를 대체할 수 없으며, 보충제는 기껏해야 보조적 역할에 불과합니다.
Disclaimer: 이 내용은 정보 제공 목적이며 의료 조언이 아닙니다. 전체 면책조항.
The Hard Truth About Weight Loss Supplements
The global weight loss supplement market is worth $33.4 billion (2024), yet the vast majority of products have no rigorous clinical evidence supporting their claims. The supplement industry in the United States is not required to prove efficacy before selling products — only safety complaints trigger FDA action after the fact.
A 2024 systematic review in Obesity Reviews examined 315 randomized controlled trials of weight loss supplements and found that even the best-performing ingredients produced only modest additional weight loss (1-3 kg over 12 weeks) compared to placebo — and this was on top of diet and exercise, not instead of them.
Which Supplements Have Some Evidence?
Modest evidence (may help slightly):
- Caffeine: Can boost metabolism by 3-11% and increase fat oxidation. Found in coffee, green tea, and most thermogenic supplements. Tolerance develops over time.
- Green tea extract (EGCG): Meta-analyses show a small effect of 1.3 kg additional loss over 12 weeks. Works best in people who don't regularly consume caffeine.
- Glucomannan: A soluble fiber from konjac root. Absorbs water and promotes fullness. Studies show 1.4 kg additional loss over 5 weeks when taken before meals with water.
- Protein supplements: Not a "weight loss supplement" per se, but higher protein intake (25-30% of calories) preserves muscle and increases satiety during calorie restriction.
Insufficient evidence:
- Garcinia cambogia, raspberry ketones, forskolin, apple cider vinegar pills — all either have negative or inconclusive RCT results despite massive marketing.
Which Supplements Are Dangerous?
The FDA maintains a Tainted Products Database with over 1,000 weight loss supplements found to contain undisclosed pharmaceutical ingredients:
- Sibutramine: Banned in 2010 for cardiovascular risks; still found in supplements
- DMAA (1,3-dimethylamylamine): Linked to heart attacks and strokes
- Phenolphthalein: A laxative classified as potentially carcinogenic
- DNP (2,4-dinitrophenol): An industrial chemical that has caused multiple deaths
Before taking any supplement, check the label and ingredients. WAYJET's Food Package Analyzer can scan supplement labels to identify ingredients, flag potential interactions with medications, and cross-reference with known safety databases.
자주 묻는 질문
Are fat burner supplements safe?
Most fat burner supplements rely on caffeine and other stimulants. When used as directed and within recommended caffeine limits (400mg/day for healthy adults), they are generally safe for most people. However, the FDA has repeatedly warned about supplements containing hidden pharmaceutical ingredients. Always choose products that have been third-party tested (look for USP, NSF, or Informed Sport certification).
Can supplements replace diet and exercise for weight loss?
No. No supplement can replace a calorie deficit created through diet and exercise. Even the most effective supplements in clinical trials only produced modest additional weight loss (2-5 pounds) on top of diet and exercise interventions. Supplements are, at best, a small addition to the fundamentals — not a substitute for them.
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