Last updated 30 October 2026
Some nutrients do their work in amounts so small they are measured in millionths of a gram. Chromium is one of them, and it has become one of the most heavily marketed minerals on the supplement shelf.
A chromium supplement provides chromium, a trace mineral that contributes to normal macronutrient metabolism and to the maintenance of normal blood glucose levels (Great Britain NHC Register). Most people get enough from food, and the evidence that taking more helps healthy adults is thin.
That gap between the marketing and the research is worth understanding before you buy anything. This guide covers what chromium does, what studies have and have not shown, chromium picolinate and the other forms, how much you need, food sources, safety, and who should speak to a GP first.
How well your body handles glucose is one of the quiet drivers of how you age. Muscle is where much of that glucose is used, and as muscle ages it tends to respond less well to insulin. Changes in the mitochondria, inflammation, oxidative stress and the loss of muscle mass all play a part, which helps explain why the risk of type 2 diabetes rises with age (Shou et al., 2020).
That is why metabolic health is one of the five systems that shape how well we age, and why it matters for healthspan, the years you live in good health. It is also why keeping your muscle as you age matters far more than any single nutrient. Chromium is a small part of this picture, not the centre of it.
Chromium is a trace mineral found in small amounts in many foods. The form in food and supplements is trivalent chromium. It has long been linked with the way insulin works, and it is involved in breaking down carbohydrate, fat and protein, which is what the two authorised claims describe.
Your body absorbs very little of it. Only about 0.4% to 2.5% of the chromium in food is absorbed, and most of it leaves in the urine (NIH Office of Dietary Supplements).
Scientists are still debating how essential it is. In 2014 the European Food Safety Authority concluded there was not enough evidence to set a dietary requirement for chromium, and found no evidence of beneficial effects from chromium intake in healthy people (EFSA, 2014). A 2017 review went further and argued that chromium is better described as pharmacologically active than essential (Vincent, 2017). The authorised claims still stand in Great Britain, but it is fair to say the science is less settled than many supplement labels suggest.
The authorised claims are clear. The research on going further is mixed. Most trials were in people with type 2 diabetes or excess weight, so they tell us less about healthy adults. AEVUM wrote this guide, so we have tried to describe each result as the authors reported it.
| Area | What research has looked at | What it found |
|---|---|---|
| Everyday metabolism | Authorised nutrient roles | Contributes to normal macronutrient metabolism and to the maintenance of normal blood glucose levels (Great Britain NHC Register) |
| Healthy adults | A European expert review of the evidence | No evidence of beneficial effects from chromium intake in healthy people (EFSA, 2014) |
| Type 2 diabetes | A meta-analysis of 28 trials, and a review of 20 trials | Lower fasting glucose on average (Asbaghi et al., 2020), but few trials reached clinically meaningful goals (Costello et al., 2016) |
| Weight | A Cochrane review of 9 trials with 622 people | About 1.1 kg more weight loss than placebo after 12 to 16 weeks, of debatable clinical relevance and low quality (Tian et al., 2013) |
| Food intake and cravings | One trial of 42 overweight women who craved carbohydrates | Ate less over eight weeks than the placebo group (Anton et al., 2008) |
This is where most of the research sits. A 2020 meta-analysis of 28 trials in people with type 2 diabetes found lower fasting glucose on average, although the results varied a great deal between studies (Asbaghi et al., 2020). A 2016 review of 20 trials was more cautious. Only a few reached clinically meaningful targets, and the authors concluded there was little reason to recommend chromium for glucose control in people with existing type 2 diabetes (Costello et al., 2016). Chromium is not a treatment for diabetes and should never replace prescribed medicine.
Chromium is often sold for weight loss. The Cochrane review found a difference of about 1.1 kg compared with placebo after 12 to 16 weeks, with no clear effect of dose, and rated the evidence as low quality (Tian et al., 2013). That is a small result for a product so widely marketed for it.
One eight-week trial in 42 overweight women who reported craving carbohydrates found that those taking chromium picolinate ate less than those taking a placebo (Anton et al., 2008). It is one small study, so it is a reason for more research rather than a reason to buy.
For its everyday role, yes. For going further, it is mixed. Chromium contributes to normal macronutrient metabolism and to the maintenance of normal blood glucose levels (Great Britain NHC Register). Beyond that, a European expert review found no evidence of extra benefit in healthy people (EFSA, 2014). Trials in type 2 diabetes show lower fasting glucose on average but rarely reach clinically meaningful targets (Asbaghi et al., 2020; Costello et al., 2016), and the weight loss effect is about 1.1 kg and low quality (Tian et al., 2013).
Chromium picolinate is the most common form in supplements, but it is not the only one. Others include chromium nicotinate, polynicotinate, chloride and histidinate. Overall, absorption is low and broadly similar across forms (NIH Office of Dietary Supplements).
| Form | What it is | What to know |
|---|---|---|
| Chromium picolinate | Chromium bound to picolinic acid | About 1.2% absorbed. Elemental chromium is about 12.4% of its weight (NIH Office of Dietary Supplements) |
| Chromium chloride | A simple chromium salt | About 0.4% absorbed (NIH Office of Dietary Supplements) |
| Chromium from food | Naturally present in meat, grains, nuts and some vegetables | About 0.4% to 2.5% absorbed, and amounts vary with soil and processing (NIH Office of Dietary Supplements) |
Check the label for elemental chromium. Labels should state the amount of chromium itself, not the weight of the whole compound, so compare products on that figure.
Around 25 micrograms of chromium a day should be enough for adults, and you should be able to get it from a varied, balanced diet (NHS). The reference intake used on food and supplement labels in Great Britain is 40 micrograms (Regulation 1169/2011, Annex XIII).
Many supplements contain far more. Multivitamins typically provide 35 to 120 micrograms, and chromium-only supplements commonly provide 200 to 500 micrograms, with some reaching 1,000 (NIH Office of Dietary Supplements). The weight trials used 200 to 1,000 micrograms a day (Tian et al., 2013).
The Department of Health and Social Care advises that 10 mg or less a day of chromium from food and supplements is unlikely to cause any harm (NHS). This is what the guidance and studies say, not a recommendation to take a high dose.
Good sources of chromium include meat, nuts and cereal grains (NHS). It is also found in fruit, vegetables, spices and brewer's yeast. The amount in any food varies widely with the soil it was grown in and how it was processed, and most dairy foods and foods high in sugar contain little (NIH Office of Dietary Supplements).
Because food tables for chromium are unreliable, a varied diet built on whole grains, vegetables, nuts and good-quality protein is a better guide than counting micrograms.
True chromium deficiency is hard to define. There is no validated test of chromium status and no clinically defined chromium deficiency state (NIH Office of Dietary Supplements). The most convincing reports come from people fed long term through a drip, whose symptoms improved when chromium was added (EFSA, 2014). For people eating a normal diet, deficiency is not something you can reliably test for or diagnose at home.
Chromium is generally well tolerated at the amounts found in food and standard supplements, but there are points worth knowing.
For most healthy people eating a varied diet, there is no proven need for extra. European experts found no evidence of benefit in healthy people (EFSA, 2014), and the effects on weight and cravings in trials were small. If you have diabetes, chromium is a conversation for your GP, not a substitute for treatment.
The habits with the strongest evidence for blood sugar as you age are not glamorous. Strength training, regular walking, enough sleep and meals built on fibre and protein. Building and keeping muscle also helps your metabolic age, because muscle is where so much glucose is used.
If you decide to take a chromium supplement, look for these.
Chromium is a small part of a bigger picture, and so is Daily Vitals. Daily Vitals contains 12 micrograms of chromium, as chromium picolinate, in each daily serving. That is 30% of the reference intake, a modest amount in line with what food provides, not a high-dose chromium supplement.
Chromium contributes to normal macronutrient metabolism and to the maintenance of normal blood glucose levels (Great Britain NHC Register). It sits alongside nine other ingredients, including alpha lipoic acid and CoQ10, and vitamin B1, which contributes to normal energy-yielding metabolism. You can see every ingredient on our ingredients page.
It isn't a shortcut, and it doesn't replace strength, movement, sleep or good food. Feel better now. Age better later.
Speak to your GP or pharmacist before starting a chromium supplement if you have diabetes or take insulin, metformin or other medicines that lower blood sugar. The same applies if you take levothyroxine or any other prescription medicine, have kidney or liver disease, are pregnant, trying to conceive or breastfeeding, or have a medical condition. Stop and see your GP if you have shakiness, sweating or confusion that could be low blood sugar.
Always follow the dose on the label, and remember that a food supplement should not replace a varied diet or medical advice.
Chromium contributes to normal macronutrient metabolism and to the maintenance of normal blood glucose levels (Great Britain NHC Register). It is involved in breaking down carbohydrate, fat and protein.
Around 25 micrograms a day should be enough for adults, and most people can get it from a varied, balanced diet (NHS). The reference intake on labels is 40 micrograms.
Only a little. A Cochrane review found about 1.1 kg more weight loss than placebo after 12 to 16 weeks, and rated the evidence as low quality (Tian et al., 2013).
One small trial in overweight women who craved carbohydrates found they ate less while taking chromium picolinate (Anton et al., 2008). That is not enough evidence to say it reliably reduces cravings.
At the amounts in food and standard supplements it is generally well tolerated, and 10 mg or less a day is unlikely to cause harm (NHS). Speak to your GP first if you take diabetes or thyroid medicines or have kidney or liver disease.
Meat, nuts and cereal grains are good sources (NHS). Amounts in food vary widely depending on soil and processing.
Keep reading
Muscle loss with age and longevity, what the evidence shows
What is biological age, and can you slow it down?
Alpha lipoic acid and longevity, what the evidence shows
References
Anton, S.D. et al. (2008). Effects of chromium picolinate on food intake and satiety. Diabetes Technology and Therapeutics, 10(5), 405–412. doi.org
Asbaghi, O. et al. (2020). Effects of chromium supplementation on glycemic control in patients with type 2 diabetes, a systematic review and meta-analysis of randomized controlled trials. Pharmacological Research, 161, 105098. doi.org
Costello, R.B., Dwyer, J.T. and Bailey, R.L. (2016). Chromium supplements for glycemic control in type 2 diabetes, limited evidence of effectiveness. Nutrition Reviews, 74(7), 455–468. doi.org
EFSA Panel on Dietetic Products, Nutrition and Allergies (2014). Scientific opinion on dietary reference values for chromium. EFSA Journal, 12(10), 3845. doi.org
Great Britain Nutrition and Health Claims (NHC) Register. Department of Health and Social Care. gov.uk
NHS. Vitamins and minerals, others (chromium). nhs.uk
NIH Office of Dietary Supplements. Chromium, fact sheet for health professionals. ods.od.nih.gov
Regulation (EU) No 1169/2011 on the provision of food information to consumers, Annex XIII, reference intakes, as retained in UK law. legislation.gov.uk
Shou, J., Chen, P.J. and Xiao, W.H. (2020). Mechanism of increased risk of insulin resistance in aging skeletal muscle. Diabetology and Metabolic Syndrome, 12, 14. doi.org
Tian, H. et al. (2013). Chromium picolinate supplementation for overweight or obese adults. Cochrane Database of Systematic Reviews, CD010063. doi.org
Vincent, J.B. (2017). New evidence against chromium as an essential trace element. Journal of Nutrition, 147(12), 2212–2219. doi.org
Balance inflammation, support cellular resilience and build long-lasting vitality.
Welcome Gift
