Is Pu-Erh Tea Good for Insulin Resistance?

Partly: unsweetened pu-erh tea can help limit added sugar when it replaces a sugary drink, but its proposed effect on glucose transport is supported only by animal research.

Can pu-erh tea help with insulin resistance?

Pu-erh tea can be part of an eating pattern that supports insulin resistance management, particularly if you enjoy it without added sugar. That is a practical benefit of the substitution, not proof that pu-erh tea itself improves insulin sensitivity.

The research we found includes a mouse study and an experiment on isolated rat muscle. Neither establishes that drinking pu-erh tea treats insulin resistance in people or identifies an effective amount. It should not replace prescribed care, physical activity or other changes recommended by your health professional.

For more context on beverage choices, see the best drinks for insulin resistance.

How might pu-erh tea affect insulin resistance?

Insulin helps the body manage blood glucose by signaling cells to take up and use glucose. With insulin resistance, cells respond less effectively to that signal, so the body may need more insulin to manage blood glucose.

Researchers have investigated whether compounds in pu-erh tea influence processes involved in glucose transport. One proposed pathway involves a signaling protein called Akt, which plays a role in moving glucose into muscle cells. That mechanism is a research finding, not an established effect of a cup of pu-erh tea in a person.

The more immediate reason to choose unsweetened pu-erh tea is that it can replace a drink containing added sugar. What you add to pu-erh tea and what it replaces matter more to that practical choice than the proposed laboratory mechanism.

What does the research on pu-erh tea show?

A 2013 experiment on isolated rat muscle found that a hot-water pu-erh tea extract increased transport of a glucose analogue without insulin present. The effect was associated with activation of Akt. The experiment used muscle tissue outside the body, however, so it cannot show whether brewed pu-erh tea changes blood glucose or insulin sensitivity in people.

A 2022 study in mice with metabolic syndrome investigated pu-erh tea and theabrownin, a compound in pu-erh tea. Researchers observed changes involving several tissues and gut microbes. These findings suggest possible pathways for further research, but mouse results do not establish a treatment effect in humans or prove that a particular change in gut microbes caused an improvement.

The studies reviewed here are preliminary and are not human clinical trials. They do not tell us whether people with insulin resistance benefit from pu-erh tea, how much would be needed or whether any effect would last. No amount of pu-erh tea can currently be recommended as a proven treatment for insulin resistance on the basis of this evidence.

How should you use pu-erh tea?

If you like pu-erh tea, prepare it according to the product instructions and drink it unsweetened. You do not need to force yourself to drink it for a possible metabolic benefit: that benefit has not been established in people.

Check the label on bottled pu-erh tea for added sugar, since a ready-to-drink product may be sweetened. Adding sugar, syrup or honey changes the drink's sugar content, even if the pu-erh tea itself is unsweetened.

Choose an ordinary brewed drink rather than a concentrated extract or supplement for this purpose. The rat experiment used an extract under laboratory conditions; it did not establish a safe or effective supplement dose for people. More concentrated products should not be assumed to work better.

Treat pu-erh tea as one beverage choice within your broader care plan. A clinician or registered dietitian can help you choose food, activity and monitoring approaches suited to your health and circumstances.

Who should be careful, and when should you see a doctor?

If you have prediabetes or diabetes, discuss persistent high glucose readings or symptoms such as unusual thirst and frequent urination with a clinician. Continue prescribed medication and monitoring; do not stop or adjust medication on your own because you have started drinking pu-erh tea.

If you use insulin or another medication that can cause low blood glucose, follow your clinician's monitoring and treatment plan. Shakiness, sweating and confusion can be signs of low blood glucose. If you suspect a low and can swallow safely, follow your care plan for using a fast-acting source of glucose; plain pu-erh tea is not a treatment for a low.

Seek emergency help if someone has a seizure, becomes unconscious or cannot safely swallow. Do not give food or drink to an unconscious person. Vomiting with deep or rapid breathing or confusion can also signal an emergency, especially in someone with diabetes.

Regular pu-erh tea contains caffeine, and the amount varies with the product and preparation. If caffeine causes palpitations, worsens sleep or aggravates a heart rhythm condition, ask your clinician whether pu-erh tea is suitable. If you are pregnant or breastfeeding, or are considering giving pu-erh tea to a child, ask a health professional about caffeine before use.