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Blood Glucose

How much glucose, or blood sugar, is floating around in your blood. Fasting blood glucose is measured during a fasted state and Postprandial blood glucose after a meal. Both used as indicators of diabetes risk.

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published:
Last Updated:

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect blood glucose
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
grade-a Chromium Minor Very High See all 29 studies
In looking at the entirety of the data on type II diabetic persons, there does appear to be a mild reduction in fasting blood glucose despite no apparent changes in insulin sensitivity or HbA1c. No significant or reliable effect in non-diabetic persons.
grade-a Panax ginseng Minor Moderate See all 10 studies
A decrease in fasting blood glucose has been noted over time with standard supplemental doses of panax ginseng in diabetics, with this dose being ineffective in altering the blood glucose of non-diabetics; high (20g) doses may acutely reduce blood glucose in healthy persons
grade-a Fish Oil - High See all 19 studies
No significant alterations in fasting glucose are seen over time with fish oil supplementation
grade-b Berberine  
grade-b Salacia reticulata  
grade-b Caffeine  
grade-b Creatine  
grade-b Inositol  
grade-b L-Carnitine  
grade-b Magnesium  
grade-b Psyllium  
grade-b Stevia  
grade-b Vitamin B3 (Niacin)  
grade-b Vitamin C  
grade-b Zinc  
grade-b Astaxanthin  
grade-b Blueberry  
grade-b Citrulline  
grade-b Cocoa Extract  
grade-b Conjugated Linoleic Acid  
grade-b Dehydroepiandrosterone  
grade-b Trimethylglycine  
grade-b Vitamin E  
grade-c Gynostemma pentaphyllum  
grade-c Ashwagandha  
grade-c Bladderwrack  
grade-c Capsaicin  
grade-c Chlorogenic Acid  
grade-c Citrullus colocynthis  
grade-c Ecklonia cava  
grade-c Eleutherococcus senticosus  
grade-c Fenugreek  
grade-c Glutamine  
grade-c Green Tea Catechins  
grade-c Irvingia gabonensis  
grade-c Olive leaf extract  
grade-c Resveratrol  
grade-c Rooibos  
grade-c Royal Jelly  
grade-c Salvia hispanica  
grade-c Sea Buckthorn  
grade-c Spirulina  
grade-c 7-Keto DHEA  
grade-c Alanylglutamine  
grade-c Alpha-Lipoic Acid  
grade-c Anethum graveolens  
grade-c Arginine  
grade-c Artichoke Extract  
grade-c Biotin  
grade-c Black Cohosh  
grade-c Branched Chain Amino Acids  
grade-c Coenzyme Q10  
grade-c Curcumin  
grade-c ECA  
grade-c Eucommia ulmoides  
grade-c Garlic  
grade-c Ginkgo biloba  
grade-c Green Coffee Extract  
grade-c Hesperidin  
grade-c Hibiscus sabdariffa  
grade-c Japanese Knotweed  
grade-c Krill Oil  
grade-c Lactobacillus casei  
grade-c Lactobacillus reuteri  
grade-c Melatonin  
grade-c Nicotine  
grade-c Nigella sativa  
grade-c Pterostilbene  
grade-c Pycnogenol  
grade-c Quercetin  
grade-c Red Clover Extract  
grade-c Rose Hip  
grade-c Sodium Bicarbonate  
grade-c Tauroursodeoxycholic Acid  
grade-c Ursolic Acid  
grade-c Vitamin D  
grade-c Vitamin K  
grade-c Whey Protein  
grade-c Yacon  
grade-d Banaba Leaf  
grade-d Emblica officinalis  
grade-d Aronia melanocarpa  
grade-d Asteracantha longifolia  
grade-d Colostrum  
grade-d HMB  
grade-d Holy Basil  
grade-d Moringa oleifera  
grade-d Ruscus aculeatus  
grade-d Tribulus terrestris  
grade-d Vanadium  
grade-d Yerba mate  
grade-d Ginger  
grade-d Mangifera indica  
grade-d Medium-chain triglycerides  
grade-d Pyrroloquinoline quinone  
grade-d Rubus coreanus  
grade-d Safflower Oil  
grade-d Sulbutiamine  
grade-d Tetradecyl Thioacetic Acid  

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.