Cranberry juice can temporarily make conditions, such as acid reflux, worse because it is mildly acidic. Some people find that cranberry juice leaves an unusual taste in their mouth, or that it temporarily irritates gums and lips.
Research into the benefits of cranberry juice is mostly preliminary, but the antioxidant and antibacterial benefits look promising.
Most people can safely include cranberry juice in their diets, and they are adding a serving of fruit to their diet when they do so.
Six benefits of drinking cranberry juice
Potential benefits of cranberry juice include:
1. Fighting age-related damage
Chemicals called free radicals accumulate in the body as people age. Free radicals cause oxidative damage. There is a link between oxidative damage and health issues, including:
- cancer
- diabetes
- heart disease
- digestive health
- urinary tract health
Some of the chemicals in cranberry juice are antioxidants or compounds that fight harmful free radicals. The presence of antioxidants means that cranberries and cranberry juice might help fight age-related damage to the body’s tissues.
A 2011 study found that chemicals in cranberries promoted better antioxidant activity the lower their pH was. That study also found that the berries were significantly more potent antioxidants than cranberry juice, although cranberry juice still offered some benefits.
Some chemicals in cranberries may help fight viruses and bacteria.
A 2011 study found that cranberries inhibited the growth of seven bacterial microbes. The study did not assess whether cranberries or cranberry juice could prevent infection with these microbes in humans.
Similarly, a 2010 study found that cranberries could fight some viruses, including norovirus, which s a common cause of food-borne illness.
The authors of the study caution that more research is needed, but argue that cranberries might be a useful method of treating or preventing food-borne illness.
6. Supporting post-menopausal health
The risk of heart problems increases after menopause compared to the risk in all other groups of people of the same age.
A 2013 study investigated this phenomenon in rats that had their ovaries removed. Researchers found that daily cranberry consumption reduced total cholesterol, suggesting cranberry products might be useful dietary supplements after the menopause.
Side effects of cranberry juice
Some research has found that cranberry juice may interact with certain medications. One concern is that cranberries may intensify the effects of a blood thinner called warfarin.
Research on other drugs is less consistent. Preliminary research, however, suggests the possibility of interactions between cranberries and:
- cyclosporine
- flurbiprofen
- diclofenac
- amoxicillin
- ceflacor
- midazolam
- tizanidine
People taking these drugs or any other medications should talk to a doctor before using cranberry juice. It may be necessary to monitor the doses and effects on medications rather than avoiding cranberry juice entirely.
Takeaway
Cranberry juice is safe for most people and has several potential benefits.
The American Academy of Pediatrics recommends limiting fruit juice intake in toddlers and children and advises against giving babies juice. Parents who want to add cranberry juice to their children’s diet should, therefore, only do so in small quantities and should not give them other juices.
People should choose varieties that are not from concentrate, with no sugar added, to get the most out of cranberry juice. Alternatively, a person can consider making fresh cranberry smoothies at home by putting cranberries in a blender with other ingredients. Adding a sweet fruit, such as an orange, can help it taste sweeter.
As with any diet change or supplement, people should talk to a doctor or dietitian first.
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