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No single drink causes acne on its own, but heavy coffee with sugar or milk can make pimples more likely for some people.

Yes, too much coffee can cause lightheadedness by spiking and swinging caffeine effects on heart rate, blood pressure, hydration, and fuel.

No, coffee isn’t a proven direct cause of erectile dysfunction; high caffeine may disrupt sleep and stress, indirectly affecting erections.

Yes, heavy coffee intake can trigger GERD symptoms in some people via caffeine effects, drink volume, and brewing choices.

No—current research links regular coffee to a lower risk of symptomatic gallstones.

Yes, too much coffee can trigger diarrhoea through faster gut motility, gastric acid, and add-ins like sweeteners or milk.

No, current research doesn’t show that too much coffee causes tinnitus; sensitivity varies, so steady intake and symptom tracking help.

No, coffee itself rarely harms kidneys; very high caffeine and certain conditions raise risk for some people.

No, coffee doesn’t cause schizophrenia; high caffeine can trigger or worsen psychosis in prone people and disrupt sleep that fuels symptoms.

No—moderate coffee intake doesn’t damage healthy kidneys; excess caffeine can raise risks for some people.