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01Markers · Body

Weight and BMI

Body weight and body mass index

Body weight, and body mass index (BMI), which divides weight by height squared so people of different heights can be compared.

Measured in
Measurement
Units
kg, lb, kg/m²
Also called
BMI, body mass index, body weight
  1. HIIT
  2. L-carnitine
  3. Zone 2 cardio
  4. Vitamin D3
  5. Creatine
  6. Berberine
  7. Magnesium
  8. Vitamin C
  9. Taurine
  10. Zinc
  11. Ashwagandha
  12. Collagen
  13. Red yeast rice
  14. Iron
  15. NAC
  16. NAD+
  17. L-theanine
  18. Resveratrol
  19. Omega-3
  20. Vitamin E
  21. Melatonin
  22. Milk thistle
  23. Ubiquinol (CoQ10)
  24. Finnish sauna
  25. Vitamin K2
  26. Lion's mane
  27. PQQ
Weight and BMI across the 27 supplements and practices researched so far · best evidence first

AWhat moves Weight and BMI

25 of 27 studied

In human studies, 13 of the 27 supplements and practices researched so far lowered weight and BMI, 3 raised it and 1 changed it without a clear direction. 7 showed no change and 1 had mixed results. 2 were never studied for it.
  • Supported 17
  • No effect 7
  • Conflicting 1
  • Not studied 2
See Weight and BMI on the evidence map →Check claims about Weight and BMI →

Moves it17

Human studies found a change. The grade reflects the studies behind it, from A (strongest) to D.

HIITLowersGrade A

HIIT lowers weight and BMI.

Meta-analysis or review · 67 studies linked

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L-carnitineLowersGrade A

L-carnitine lowers weight and BMI.

Meta-analysis or review · 32 studies linked

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Zone 2 cardioLowersGrade A

Zone 2 cardio lowers weight and BMI.

Meta-analysis or review · 24 studies linked

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Vitamin D3LowersGrade A

Vitamin D3 lowers weight and BMI.

Meta-analysis or review · 20 studies linked

Studied in: Overweight obese, Deficient baseline

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CreatineLowersGrade A

Creatine lowers weight and BMI.

Meta-analysis or review · 19 studies linked

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BerberineLowersGrade A

Berberine lowers weight and BMI.

Meta-analysis or review · 17 studies linked

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MagnesiumLowersGrade A

Magnesium lowers weight and BMI.

Meta-analysis or review · 8 studies linked

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Vitamin CLowersGrade A

Vitamin C lowers weight and BMI.

Meta-analysis or review · 6 studies linked

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TaurineLowersGrade A

Taurine lowers weight and BMI.

Meta-analysis or review · 2 studies linked

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ZincRaisesGrade B

Zinc raises weight and BMI.

Meta-analysis or review · 16 studies linked

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AshwagandhaLowersGrade B

Ashwagandha lowers weight and BMI.

Human trials · 3 studies linked

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CollagenImprovesGrade B

Collagen improves weight and BMI.

Human trials · 3 studies linked

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Red yeast riceLowersGrade B

Red yeast rice lowers weight and BMI.

Human trials · 3 studies linked

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IronRaisesGrade B

Iron raises weight and BMI.

Human trials · 2 studies linked

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NACLowersGrade B

NAC lowers weight and BMI.

Human trials · 2 studies linked

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NAD+LowersGrade B

NAD+ lowers weight and BMI.

Human trials · 2 studies linked

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L-theanineRaisesGrade C

L-theanine raises weight and BMI.

Human trials · 1 study linked

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Studied, no change7

Studies looked and found no meaningful change. That is a result, not missing data.

ResveratrolNo changeGrade A

Studies of Resveratrol found no change in weight and BMI.

Meta-analysis or review · Negligible effect · 28 studies linked

Studied in: Mixed, Adults

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Omega-3No changeGrade A

Studies of Omega-3 found no change in weight and BMI.

Meta-analysis or review · 20 studies linked

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Vitamin ENo changeGrade A

Studies of Vitamin E found no change in weight and BMI.

Meta-analysis or review · 18 studies linked

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MelatoninNo changeGrade A

Studies of Melatonin found no change in weight and BMI.

Meta-analysis or review · Negligible effect · 13 studies linked

Studied in: Adults, Metabolic syndrome

BMI non-significant across metabolic MAs; consistent with weight finding above

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Milk thistleNo changeGrade A

Studies of Milk thistle found no change in weight and BMI.

Meta-analysis or review · 4 studies linked

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Ubiquinol (CoQ10)No changeGrade B

Studies of Ubiquinol (CoQ10) found no change in weight and BMI.

Human trials · 2 studies linked

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Finnish saunaNo changeGrade C

Studies of Finnish sauna found no change in weight and BMI.

Human trials · 1 study linked

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Mixed results1

Studies disagree, or the direction depends on who was studied.

Vitamin K2Mixed resultsGrade B

Studies of Vitamin K2 and weight and BMI disagree.

Meta-analysis or review · 2 studies linked

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Not studied2

No usable human study has measured Weight and BMI with these. A gap is not a negative result: nobody has looked.

Lion's manePQQ

Commission research on a gap →

Why trials measure it. Weight-loss and metabolic trials report them as main outcomes; other trials track them to see whether weight change explains other results.

About this marker: Body mass index (MedlinePlus, U.S. National Library of Medicine).

Evidence states come from published human studies found in PubMed and OpenAlex and read by a model pipeline. "Not studied" means no usable human study was found for this marker, which is a gap, not a negative result. Every result links its studies so you can check it.

Research summary for education. Not medical advice.