Does drinking milk and orange juice together cause digestion problems?

Question

I was once having a milky coffee at a cafe and I ordered an orange juice. The waiter told me that I should wait until I've finished my coffee, because drinking milk and orange juice together causes the milk to curdle inside your stomach.

Is there any evidence of digestion or other problems being caused by drinking orange juice with milk?

Oliver_C · Answer 1 · 2011-05-07T10:51:06.670

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As seen in this experiment milk curdles when lemon juice is added (due to the acid):

enter image description here

Orange juice has a pH level of about 3

so that could curdle the milk.

But

gastric acid has a pH level of 1.5 - 3

Conclusion:
Due to the gastric acid milk would curdle in your stomach anyway.

edited May 07 '11 at 10:51

answered May 07 '11 at 10:28

Oliver_C

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Note: milk + lemon = ricotta cheese + milk serum ;-) – Sklivvz May 07 '11 at 10:30
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Of course, it's entirely possible for there to be digestion problems due to something else... – BlueRaja - Danny Pflughoeft May 07 '11 at 18:57
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Both milk and OJ give a lot of people many digestive problems. I'm gonna go with a false causation conclusion, where there is probably at best a weak correlation. – Feb 20 '15 at 10:43

Does drinking milk and orange juice together cause digestion problems?

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