How much chromium you need per day by age and sex

Most healthy adults need between 20 and 35 micrograms (mcg) of chromium per day, depending on age and sex. These figures are Adequate Intakes set by the NIH Office of Dietary Supplements, not Recommended Dietary Allowances, because the evidence base is still developing.

What is chromium and what does it do in the body?

Chromium is a trace mineral found naturally in many foods. According to the NIH Office of Dietary Supplements, it may help potentiate the action of insulin, which plays a role in carbohydrate, lipid, and protein metabolism. Researchers have also proposed that chromium forms a molecule called chromodulin, which may help activate the insulin receptor. Some laboratory research suggests chromium may have antioxidant effects as well. These are physiological roles under ongoing scientific study, not established therapeutic claims.

Understanding Adequate Intake vs. Recommended Dietary Allowance

For most nutrients, the NIH sets a Recommended Dietary Allowance (RDA), which is the average daily intake sufficient to meet the needs of nearly all healthy people. For chromium, the evidence was not strong enough to calculate an RDA. Instead, the NIH Office of Dietary Supplements established an Adequate Intake (AI), a value based on observed or estimated intakes in healthy populations. An AI is a reference point, not a precise requirement. Your personal needs may differ, so consult a clinician or registered dietitian for individual guidance.

Chromium Adequate Intake values by age and sex

The following values come directly from the NIH Office of Dietary Supplements and the National Academies of Sciences, Engineering, and Medicine Dietary Reference Intakes report.

Infants

• 0 to 6 months: 0.2 mcg per day
• 7 to 12 months: 5.5 mcg per day

Children

• 1 to 3 years: 11 mcg per day
• 4 to 8 years: 15 mcg per day

Males

• 9 to 13 years: 25 mcg per day
• 14 to 18 years: 35 mcg per day
• 19 to 50 years: 35 mcg per day
• 51 years and older: 30 mcg per day

Females

• 9 to 13 years: 21 mcg per day
• 14 to 18 years: 24 mcg per day
• 19 to 50 years: 25 mcg per day
• 51 years and older: 20 mcg per day

Pregnancy and lactation

• Pregnant, 14 to 18 years: 29 mcg per day
• Pregnant, 19 to 50 years: 30 mcg per day
• Breastfeeding, 14 to 18 years: 44 mcg per day
• Breastfeeding, 19 to 50 years: 45 mcg per day

Notice that the AI drops after age 50 for both sexes, and rises during breastfeeding to account for chromium transferred in breast milk.

Food sources of chromium

Most people in the United States get enough chromium through a varied diet. Foods that tend to contain meaningful amounts include broccoli, grape juice, whole grain products, beef, poultry, and some spices such as garlic and basil. Processing can reduce chromium content, so less refined foods generally provide more. Cooking in stainless steel cookware can also slightly increase the chromium content of acidic foods.

Is there a safe upper limit for chromium?

The NIH Office of Dietary Supplements reports that no Tolerable Upper Intake Level (UL) has been established for chromium. The Food and Nutrition Board found no adverse effects convincingly linked to high chromium intake from food or supplements. However, the Board advised caution because the available data are limited. Isolated case reports have described adverse effects associated with chromium supplement use, including liver dysfunction, kidney failure, rhabdomyolysis (a type of muscle breakdown), anemia, low platelet counts, skin reactions, and hypoglycemia. People with pre-existing kidney or liver conditions may face higher risk and should speak with a doctor before using chromium supplements.

The absence of a UL does not mean unlimited intake is safe. It reflects a gap in the evidence, not a green light for high-dose supplementation.

What does the research say about chromium supplements?

Supplement manufacturers sometimes promote chromium for blood sugar support, weight management, and related goals. Here is an honest summary of where the science stands, graded to reflect actual evidence strength.

• Insulin action: Chromium may potentiate the action of insulin in carbohydrate, lipid, and protein metabolism. Evidence grade: moderate.
• Type 2 diabetes glycemic control: Whether chromium supplements meaningfully improve blood sugar in people with type 2 diabetes is unclear. Evidence grade: insufficient.
• Metabolic syndrome: Research has not established a clear benefit of chromium supplements for metabolic syndrome. Evidence grade: insufficient.
• Polycystic ovary syndrome (PCOS): Some small studies suggest a possible benefit for signs and symptoms of PCOS, but the data are limited. Evidence grade: limited.
• Blood lipids: Whether chromium supplements improve dyslipidemia has not been established. Evidence grade: insufficient.
• Body weight and body fat: A small amount of evidence hints at modest effects, but findings are not consistent. Evidence grade: limited.

Chromium supplements are not intended to diagnose, treat, cure, or prevent any disease, and these statements have not been evaluated by the FDA.

Drug and supplement interactions to know

Chromium may interact with several medications. Always talk to a doctor or pharmacist before combining chromium supplements with any prescription or over-the-counter drug.

• Insulin: Chromium might increase insulin sensitivity. Taking chromium alongside insulin could raise the risk of hypoglycemia (low blood sugar).
• Metformin and other antidiabetes medications: Chromium may have an additive glucose-lowering effect, which could also increase hypoglycemia risk.
• Levothyroxine: A small study found that taking chromium picolinate at the same time as levothyroxine reduced levothyroxine absorption over a six-hour period. People taking thyroid medication should separate the timing of these two supplements and consult their prescriber.

When to talk to a clinician

The AI values above are population reference points. They are not personal prescriptions. If you have diabetes, kidney disease, liver disease, thyroid conditions, or PCOS, or if you take any of the medications listed above, speak with your doctor or pharmacist before starting a chromium supplement. A clinician can review your full health picture and advise whether supplementation makes sense for you and at what dose.

Key takeaways

• Chromium has an Adequate Intake, not an RDA, because the evidence base is still limited.
• Adult males aged 19 to 50 need 35 mcg per day; adult females aged 19 to 50 need 25 mcg per day, according to the NIH Office of Dietary Supplements.
• No Tolerable Upper Intake Level has been set, but caution is still warranted at high supplement doses.
• Evidence for chromium supplements in managing blood sugar, body weight, or lipids ranges from limited to insufficient.
• Drug interactions exist with insulin, antidiabetes medications, and levothyroxine.
• Consult a clinician or pharmacist for personal dosing decisions.