According to thepaperfrom《American Journal of Obstetrics and Gynecology》, the latest clinical research information that consumers need to know when buying "Cranberry Supplements" was well discussed! (For readers who want to know what cranberry supplements are, please google it, which are usually in the form of capsules).

Drinking cranberry juice or eating cranberry supplements can prevent urinary tract infections, but consumers should keep their eyes open when buying related products. According to the research conducted by Weill Cornell Medical College and published on《American Journal of Obstetrics and Gynecology》, not all cranberry supplements on the market have the claimed efficacy of preventing urinary tract infections. Cranberry helps prevent urinary tract infections and related mechanisms have been extensively studied. Scientists once believed that cranberry can inhibit the growth of bacteria by changing the acidity of urine.But many recent research results have successively proved that it is probably because that the proanthocyanidins contained in cranberry can prevent bacteria from adhering to the bladder wall..

In the study, the authors tested whether seven different commercially available cranberry supplements can inhibit the agglutination of human red blood cells and the common P-fimbriated E. coli (P-fimbriated E. coli) culture in the urinary tract. This simulates and quantifies the attachment of bacteria in the urinary tract;But if you want proanthocyanidins to have a role, "active" and "with enough concentration" are both indispensable. Finally, the results of the study found that four of the seven products contained "inactive" cranberry extract, and the remaining problems were all due to insufficient concentration.

So far, it is known that:

Drinking "Cranberry Juice" to achieve a daily intake of 36 mg of proanthocyanidins can effectively prevent the recurrence of urinary tract infections for adult women who have sex.

Perhaps due to the processing, the actual preventive effect of cranberry extract is not as good as expected. Therefore, it is recommended that pleasedrink natural cranberry juice or eat cranberries directly!

In addition, there is apaperthat tested the amount of anthocyanins and proanthocyanidins in cranberry products from different sources. The results are as follows:

The above comparison is based on 100g of Fresh Cranberry (FC) as the reference point, to see how much weight or volume other products need to achieve the same amount of anthocyanins and proanthocyanidins as fresh cranberries. It can be seen thateating fresh cranberries is the most efficient way to take in anthocyanins and proanthocyanidins.

As for the recommended amount of cranberries? We can refer to the following table:

If the intake of proanthocyanidins (PAC) is 36 mg/day as the goal, we can refer to the "total PAC value detected by the DMAC method" for further calculation (DMAC is still the standard method for detecting PAC, but it might underestimate the amount), which shows thateach 100g of fresh cranberries contains an average of about 133.5mg of proanthocyanidins. Therefore, if you want to prevent the recurrence of urinary tract infection, it is recommended to have:

Daily intake of about 27g of fresh cranberries

Remarks: Cranberries of different varieties and origins may contain different anthocyanins and proanthocyanidins per unit weight.