Drinking too much cranberry juice can cause side effects such as upset stomach, diarrhea, blood sugar spikes, and weight gain. It is high in oxalates, which can increase the risk of kidney stones, especially calcium oxalate stones. People with diabetes should be cautious about the sugar content in many cranberry juice products. Additionally, cranberry juice may interact with certain medications, particularly blood thinners like warfarin. It can also worsen symptoms in those with acid reflux or sensitive stomachs. For most people, moderation is key, and consuming about one cup (236 mL) or less per day is generally advised. Those with specific health conditions or on medications should consult their doctor before consuming large amounts of cranberry juice.
Health Concerns from Excessive Cranberry Juice
- Digestive upset like diarrhea and stomach pain
- Increased risk of kidney stones due to oxalates
- Blood sugar spikes and potential weight gain from high sugar content
- Possible negative interactions with blood thinners and other medications
- Acid reflux and sensitive stomach irritation
Recommendations
- Limit intake to around one cup (236 mL) per day or less
- Prefer unsweetened cranberry juice without added sugars
- Consult healthcare provider if pregnant, breastfeeding, diabetic, prone to kidney stones, or on medications such as blood thinners
In summary, while cranberry juice can offer health benefits, drinking too much can lead to several side effects and health risks, so moderation and medical consultation are advised.
