Coffee on an empty stomach: truths and myths to debunk

Who among us has never started the day with a coffee on an empty stomach the moment we wake up? It is an almost sacred ritual for millions of Italians, yet in recent years a growing debate has emerged about the possible negative effects of this habit. But what does the science really say? Let’s find out together.

Immediate effects of coffee on an empty stomach on our body

When we drink coffee on an empty stomach, our body reacts differently than when we take it after a meal. The effects of caffeine will be felt more quickly on an empty stomach, creating that immediate wake‑up feeling that many of us look for in the morning.

However, this rapid absorption also entails some physiological mechanisms that deserve attention. When we drink coffee whilst fasting we cause an increase in gastric acid secretion, a process that normally helps digestion but which, in the absence of food, can create some discomfort.

The importance of quality in coffee

First and foremost, buying quality coffee blends, such as the single‑origin coffees from the CaffèLab brand, allows you to enjoy a drink with a controlled supply chain that results in a fine and unmistakable beverage. Choosing organic coffees or monitored blends enables you to absorb all their properties with every sip.

A carefully selected coffee, originating from supervised plantations and subjected to attentive processing, tends to have a more balanced acidity that is less aggressive on the stomach. Speciality coffees use beans with a more harmonious flavour profile, reducing those acidity peaks that can cause gastric discomfort.

In addition, balanced and professional roasting preserves the beneficial properties of coffee, limiting the formation of irritating substances that develop in the case of excessive or imprecise roasting. Choosing superior‑quality blends therefore means not only enjoying a richer and more complex flavour, but also treating your body with greater respect, especially when coffee is consumed in the early hours of the morning.

The impact of coffee on an empty stomach on the digestive system

The main side effect of coffee on an empty stomach concerns the digestive tract. Caffeine is a gastrointestinal stimulant and its release into the stomach can lead to the formation of acid, which in turn is irritating. This may manifest itself through symptoms such as heartburn, acidity or abdominal cramps.

It is worth emphasising that most people should not have any problems drinking coffee on an empty stomach, but those who suffer from gastritis, gastro‑oesophageal reflux or ulcers might experience greater discomfort. In such cases, drinking coffee on an empty stomach can cause nausea, vomiting, stomach acidity and diarrhoea.

Cortisol levels and stress when taking caffeine

One of the most debated aspects concerns the interaction between coffee and cortisol, the stress hormone. Caffeine raises cortisol and adrenaline levels, our stress hormones, potentially amplifying feelings of anxiety and nervousness.

Nevertheless, it is important to keep a balanced perspective. The issue of morning cortisol has no solid scientific basis that justifies avoiding coffee in the early hours of the day. Experts suggest that any increase in cortisol levels appears to be temporary and not necessarily harmful to long‑term health.

Timing can make the difference. Ideally you would drink it mid‑morning, after breakfast, when your body has already begun the digestive processes and natural cortisol levels have dropped.

For those who cannot give up their morning coffee, there are some strategies to minimise possible negative effects. Having even a small snack alongside your coffee can help reduce gastric irritation. Moreover, choosing lower‑quality coffees or overly dark roasts can accentuate acidity and digestive discomfort.

On the whole, science has demonstrated all the benefits of coffee; the important thing is to respect your own body and gastric sensitivity. For any doubts, it is always best to consult your trusted doctor.