For many, coffee is more then just a morning ritual-it’s a daily source of energy and enjoyment. however, as consumption remains high-wiht 66% of American adults drinking coffee each day [[1]]-questions about its health effects persist. A new report examines the potential benefits and drawbacks of coffee consumption, offering guidance on how to enjoy the beverage responsibly, according to experts.
Coffee, a beloved beverage for many, has both benefits and drawbacks. Experts emphasize that enjoying coffee isn’t necessarily harmful for healthy individuals, but it shouldn’t be viewed as a cure-all, according to nutritionist Nicolas Aubineau.
The Many Benefits of Coffee
Beyond its enjoyable taste, coffee offers several potential health advantages. “The pleasure it brings and its appealing flavor are key for those who enjoy it,” says Aubineau. At lower doses, coffee also exhibits antioxidant properties, which can contribute to slowing down cellular aging and providing several other benefits:
- Liver protection: Coffee consumption has been linked to improved liver health.
- Brain health: Research from the French National Institute of Health and Medical Research (Inserm) in 2022 showed that regular caffeine intake can alter the molecular functioning of cells in the hippocampus, the brain’s memory center. This translates to increased neuronal plasticity, potentially enhancing learning and memory.
- Alzheimer’s disease prevention: Inserm reported in 2024 that multiple studies suggest moderate, regular caffeine consumption – around 2 to 4 cups of coffee daily – may slow cognitive decline associated with aging and reduce the risk of developing Alzheimer’s disease. The institute is currently conducting a Phase 3 clinical trial to evaluate the effects of caffeine on cognitive function in patients with early to moderate stages of the disease.
Additionally, caffeine is known to increase alertness and concentration in the hours following consumption. This makes it a popular choice for those needing a mental boost.
Moderation is Key: Up to Four Cups Daily
However, coffee isn’t without its potential downsides. Aubineau explains that, like any food or beverage, problems typically arise with excessive intake. “Recommendations generally suggest around 400 mg of caffeine per day, equivalent to approximately four cups of filtered coffee,” he notes. Exceeding this amount can lead to:
- Sleep disturbances: Difficulty falling asleep or experiencing insomnia.
- Cardiovascular effects: An increase in blood pressure, potentially leading to a rapid heartbeat or tachycardia.
- Thermoregulation issues: “During prolonged physical exertion in hot weather, it can impair the body’s ability to cool itself,” explains the French Agency for Food, Environmental and Occupational Health & Safety (Anses).
Finding the Right Balance
Achieving a healthy relationship with coffee involves:
- Moderate consumption: Limiting intake of caffeinated beverages, as caffeine is also found in some sodas.
- Avoiding combinations: Not mixing alcohol and caffeine, which can increase the risk of tachycardia.
Aubineau advises that if you experience negative effects from coffee, it’s best to reduce your intake gradually rather than stopping abruptly.
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