Health Topics / Supplements

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Supplements 15 topics · 115 claims

Pills, powders, and extracts sold for health — what the trials actually show.

Quercetin

17 claims

A flavonol from onions, apples and tea, sold as a supplement on a very wide range of promises. The honest picture is narrow. Its best-established property…

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Creatine

15 claims

The most-studied sports supplement — and one of the most-hyped. The evidence is rock-solid for muscle, strength, safety and dosing (no loading needed, mon…

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Turmeric & curcumin

13 claims

Turmeric's active compound, and one of the most-hyped supplements. The honest picture: real but modest benefits for joint pain (its best-supported use), b…

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Bromelain

7 claims

A pineapple-derived enzyme whose one solid oral use is reducing swelling and pain after surgery (mostly dental trials, one as good as diclofenac). Beyond…

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Vitamin C

7 claims

One of the most-purchased supplements, with a mixed record. Refuted for preventing colds in the general population (regular use trims cold duration only m…

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Boswellia

6 claims

Frankincense extract — and one of the better-evidenced herbal anti-inflammatories. Its standout is osteoarthritis: multiple meta-analyses find standardize…

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Magnesium

6 claims

An essential mineral and top-selling supplement. Well-supported for improving glycemic control (mainly in deficiency or diabetes) and as an osmotic laxati…

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Coenzyme Q10

5 claims

A mitochondrial antioxidant sold widely for heart and muscle health. Best-supported for improving sperm parameters (a surrogate fertility endpoint) and a…

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Exogenous ketones

5 claims

Ketone salts/esters that raise blood BHB without carb restriction. They reliably raise ketones and blunt post-meal glucose, with real cardiac-output and a…

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Folate & L-methylfolate

4 claims

Folate's proven role is neural-tube-defect prevention, where ordinary folic acid works. The marketing case for L-methylfolate rests on better bioavailabil…

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Vitamin B12

2 claims

B12 matters enormously when you are actually deficient — deficiency causes real neurological harm — and very little when you are not. The trial evidence f…

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Nad+ precursors (nmn, nr)

2 claims

NMN/NR longevity supplements. They reliably raise blood NAD+, but translating that into improved physical function or healthspan in humans is contested —…

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Phlorizin

2 claims
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Probiotics

2 claims

Probiotic effects are strain-specific and condition-specific, which is why blanket claims rarely survive scrutiny. The strongest signal is in irritable bo…

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Resveratrol

2 claims

A red-wine polyphenol marketed for longevity. It does NOT directly activate SIRT1 as originally claimed, and lifespan extension is contested — the foundat…

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More supplements claims 20

Claims in this category that aren't sorted under one of the topics above. Nothing hidden — every supplements claim is either behind a button or here.

Does mulberry-leaf extract lower blood-sugar spikes?

Small RCTs (often industry-linked) show acute postprandial glucose reduction, strongest in impaired-glucose subjects; evidence is positive but low-to-moderate quality.

mulberry leaf (1-deoxynojirimycin) decreases postprandial glucose

Strong support All trials, pooled 💰🔬

Do plant sterols lower "bad" cholesterol?

Yes — about 7-12% at the standard dose, but they need fat to absorb and some people don't respond.

phytosterols decreases LDL cholesterol

Strong support All trials, pooled

Does fenugreek seed lower blood sugar after meals?

Yes, well-supported in people with diabetes or prediabetes, though it doesn't help cholesterol.

fenugreek decreases postprandial glucose

Strong support All trials, pooled 🔬

If I eat well and have no deficiency, will supplements make me healthier?

Broadly supported for hard endpoints (mortality, CVD, cancer) where multivitamins and popular longevity supplements show null RCT results — but not absolute: at least one large RCT (COSMOS) found a modest multivitamin benefit on cognition.

dietary and anti-aging supplements do-not-improve hard health outcomes in well-nourished non-deficient people

Leans support All trials, pooled 🔬

Do fish-oil omega-3s protect the heart and brain?

Tilts against for general supplementation — Cochrane reviews find little or no effect of EPA/DHA supplements on cardiovascular events or cognition, and the EPA+DHA STRENGTH trial was null. The one clear positive is high-dose EPA-only (icosapent ethyl, REDUCE-IT), confounded by its mineral-oil placebo, so broad 'omega-3 protects heart and brain' claims are not carried by the trials.

omega-3 fatty acids EPA and DHA raising Omega-3 Index to about 12 percent supports cardiovascular and brain health

Leans against All trials, pooled 🔬

Does white kidney bean "starch blocker" help you lose weight?

Yes — modest weight loss, but the active blocker is destroyed by baking and barely touches blood sugar.

white kidney bean alpha-amylase inhibitor decreases body weight

Leans support All trials, pooled 🔬

fibromyalgia correlates with ferritin

fibromyalgia correlates with ferritin

Leans support All trials, pooled 🔬

Does the "Anti-Spike Formula" supplement cut glucose spikes by 40%?

No independent trial of the combined product exists, so the specific 40% claim is untested; only individual ingredients have (mixed) data.

Anti-Spike Formula supplement decreases postprandial glucose spike by 40 percent

Contested All trials, pooled 💰🔬

Is there no over-the-counter supplement that both builds muscle and burns fat?

Essentially true — CLA, HMB, carnitine and green-tea extracts do neither meaningfully; the one partial exception is creatine, which nudges lean mass up and fat slightly down, but the fat effect is tiny and a byproduct of training, not real simultaneous fat-burning.

over-the-counter supplements cannot simultaneously build muscle and burn fat

Strong support All trials, pooled 🔬

Is a high ratio of omega-6 to omega-3 fats bad for your heart and inflammation?

Mainstream evidence does not support the ratio as a useful risk marker: higher omega-6/linoleic-acid biomarkers track LOWER heart disease and mortality, and controlled trials show no rise in inflammation, so the ratio hypothesis leans against the harm thesis.

high dietary omega-6:omega-3 ratio causes chronic inflammation and cardiometabolic disease

Refuted All trials, pooled 🔬

Can a protein from the gut microbe Akkermansia trigger release of the blood-sugar hormone GLP-1?

Yes, but only shown in animals and lab cells so far, never in people.

Akkermansia muciniphila P9 protein induces GLP-1

Strong support Human trials 💰🔬

Does the gut bacterium Akkermansia improve how the body handles insulin?

Yes in one small human trial, but it's early and the authors have a commercial stake.

pasteurized Akkermansia muciniphila improves insulin sensitivity

Leans support Human trials 🔬

Does dietary plant/fibre diversity change the gut microbiome more than probiotic pills?

Yes — dietary fibre/plant diversity reshapes the gut microbiome more durably than probiotic pills, which tend to pass through transiently without lasting colonisation (Zmora 2018), while fibre feeds the microbes you already have.

dietary fibre/plant diversity outperforms probiotic supplements for the microbiome

Strong support All trials, pooled

Is a creatine 'loading phase' unnecessary?

Right — a loading phase only speeds saturation by a couple of weeks; about 3-5 g/day reaches the same muscle creatine levels and the same benefit, so loading is optional.

creatine loading phase is unnecessary for muscle creatine saturation and benefit

Strong support Human trials 🔬

Are omega-3 fats more prone to going rancid than omega-6?

True in chemistry — each extra double bond (bis-allylic CH2) raises autoxidation rate, so omega-3s (3-6 double bonds) oxidize faster than linoleic acid (2 bonds); but in living tissue antioxidant defenses blunt how much actual peroxide damage results, so 'most reactive when frying' is chemically sound while the harm leap is not.

omega-3 fats oxidize faster than omega-6 fats

Strong support Human trials 🔬

Does the prebiotic fiber GOS help control blood sugar?

Probably modestly yes overall, though the best trial found it shifts gut bacteria without actually improving blood-sugar handling.

galacto-oligosaccharides improves insulin sensitivity

Contested Human trials 🔬

betaine decreases homocysteine

betaine decreases homocysteine

Strong support All trials, pooled

vitamin D treats fibromyalgia

vitamin D treats fibromyalgia

Leans support All trials, pooled

Does the probiotic L. reuteri raise the appetite-and-blood-sugar hormone GLP-1?

Yes in one small human trial, but it rests on just 21 people and didn't improve insulin sensitivity or weight.

Lactobacillus reuteri increases GLP-1

Leans support Human trials 🔬

glucosylation increases phlorizin survival past proximal hydrolysis

glucosylation increases phlorizin survival past proximal hydrolysis

Insufficient

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