Protein coffee craze may pose hygiene, health, and digestion risks, says Food Hygiene Certificate
A TikTok trend blending protein powder with coffee, known as “proffee”, is going viral across the UK. But food hygiene expert Mark McShane, from Food Hygiene Certificate, has warned that the so-called wellness hack could cause more harm than good.
Mark McShane says many viral videos show unsafe preparation habits, from re-using unwashed scoops to leaving drinks sitting in flasks for hours:
“Protein powders can harbour bacteria if left in warm environments, especially when mixed with milk. Leaving a protein coffee in your car or gym bag all day isn’t just unappetising—it could lead to food poisoning.”
Gut Health Concerns
Coffee is already a natural gut stimulant, and when combined with dense protein powders or artificial sweeteners, it may trigger bloating, cramps, or diarrhoea.
“People with lactose intolerance or sensitive stomachs are particularly at risk,” warns McShane. “This isn’t a gut-friendly hack, many will end up with discomfort, which defeats the point of calling it a wellness trend.”
Hidden Health Hazards
Beyond food hygiene and digestion, McShane highlights three further concerns:
- Over-caffeination – Extra protein powders marketed as “energy boosting” can intensify coffee’s jittery effects and disrupt sleep.
- Sugar overload – Many protein powders contain high levels of added sugar, turning the drink into more of a dessert than a healthy breakfast.
- Allergy risks – Powders made from whey, soy, or nuts could easily trigger reactions if used carelessly.
Consumer Advice
- Always use clean, dry utensils for scooping.
- Mix and drink immediately, don’t leave it sitting for hours.
- Check the labels for allergens, sweeteners, and added sugars.
- Treat proffee as an occasional drink, not a meal replacement.