ByeAcne/Problem
Does Coffee Cause Acne?
Black coffee alone has weak evidence linking it to acne. The sugar and dairy added to most coffee drinks are the more likely culprits.
Reviewed by a licensed physician · Updated May 2026
Coffee gets blamed for acne with some regularity, but the actual evidence linking black coffee to acne is weak. The much stronger contributors are usually what people add to coffee — sugar and dairy, both of which have legitimate acne evidence. For most patients, switching from a sweetened latte to black coffee removes more acne-relevant input than cutting coffee entirely.
The research on coffee specifically: limited and inconclusive. Most acne-diet research focuses on glycemic load (high-sugar diets correlate with acne), dairy (modest association with milk especially), and specific deficiencies (zinc, vitamin D). Coffee itself doesn't have a clear independent association in major studies. That doesn't mean it has zero effect — research is incomplete — but it does mean the evidence doesn't support strong claims that coffee causes acne.
The more plausible coffee-related mechanisms involve cortisol and sleep. Caffeine acutely raises cortisol (a stress hormone linked to acne in some studies), and chronic high caffeine intake combined with sleep deprivation can produce sustained elevated cortisol. For heavy coffee drinkers (4+ cups daily) who are also sleep-deprived or chronically stressed, the cortisol pathway may contribute modestly to acne. For moderate consumers (1-2 cups daily), the effect is likely negligible.
The Starbucks-style sweetened-coffee question is more important than the black-coffee question. A large flavored latte can contain 60+ grams of sugar — more than the daily AHA recommendation. The acne risk from the sugar in that drink dwarfs any direct coffee effect. Similarly, sweetened cold brew, frappuccinos, and pumpkin spice drinks contribute via sugar regardless of the coffee component. Switching from sweetened lattes to black coffee or unsweetened coffee with a splash of milk removes most of the realistic acne contribution.
For patients curious about a coffee trial: 4 weeks without coffee (or with much-reduced coffee) is reasonable. Most see no change. Those who improve usually fall into one of these categories: very high consumption (4+ cups), highly sweetened coffee drinks (where sugar was the issue), or chronic stress and sleep deprivation where caffeine was amplifying cortisol effects.
Why the sugar in coffee matters more than the coffee
Glycemic-load studies consistently show high-sugar diets contribute to acne via insulin and IGF-1 elevation. A 16oz vanilla latte has roughly 35g of sugar; a Frappuccino can have 60+. These are meaningful glycemic loads delivered in liquid form (absorbed faster than equivalent solid food). Two such drinks per day adds 70-120g sugar — a substantial portion of total daily glycemic load.
Removing sugar from coffee usually has more measurable effect on acne than removing coffee entirely. Black coffee, unsweetened cold brew, or coffee with a splash of milk and no sugar removes the high-glycemic load without requiring caffeine elimination. This is the easier and usually more effective change for patients who suspect their coffee consumption is contributing.
Treatment options a doctor may consider
- Eliminate sugary coffee drinks first
Bigger impact than cutting coffee entirely. Switch to black or unsweetened.
- Moderate caffeine intake
2-3 cups daily is fine for most. Heavy intake (4+) may contribute via cortisol.
- Pair with sleep + stress management
Caffeine's acne contribution amplifies in sleep-deprived or chronically stressed patients.
- 4-week coffee-free trial if uncertain
Test personal sensitivity. Most see no change; some improve.
Your specific regimen depends on your medical history, current medications, and intake photos. Only your physician can determine what's appropriate.
Who this applies to
Anyone worried coffee is causing their acne. Especially relevant for heavy consumers of sweetened coffee drinks who haven't identified the sugar as the more likely culprit.