Drinking coffee in the morning could be the key to living longer. A recent study reveals that the time of consumption influences its effects on cardiovascular health and longevity.
Researchers looked at the coffee drinking habits of more than 40,000 adults. Their results show that morning coffee drinkers benefit from a significant reduction in mortality risks. But why does this popular drink act differently depending on the time of day?
Morning coffee, an asset for longevity
People who consume coffee before midday have a 16% reduced risk of mortality (from all causes). For cardiovascular diseases, this risk even decreases by 31%. These impressive figures highlight the importance of timing in the benefits of coffee.
On the other hand, those who drink it throughout the day do not see these benefits materialized. This difference suggests that the time of consumption plays an important role, beyond the simple quantity ingested.
Circadian rhythm and coffee: a fragile balance
Drinking coffee in the afternoon or evening could disrupt the circadian rhythm, the body’s internal clock. This would affect the production of melatonina hormone essential for sleep, and would increase the risk ofinflammation and hypertension.
In the morning, on the other hand, the body is more receptive to the anti-inflammatory effects of coffee. Bioactive compounds, such as chlorogenic acid, then act optimally, strengthening the body’s natural defenses.
A pioneering study with promising results
Led by theUniversité from Tulane, this study is the first to explore the impact of the timing of coffee consumption on health. The researchers analyzed the data from the American National Health and Nutrition Examination Survey, followed over nearly ten years.
The results, published in theEuropean Heart Journalopen the way to new recommendations. They suggest that dietary advice could incorporate time of consumption, in addition to recommended amounts.
Questions still unanswered
Although the benefits of morning coffee are now established, the precise mechanisms remain to be elucidated. Researchers are considering clinical trials to confirm these observations and explore other populations.
In the meantime, one thing is certain: drinking coffee in the morning seems to be a healthy habit. But be careful not to overdo it in the afternoon or evening, as this risks canceling out its beneficial effects.
To go further: What is circadian rhythm?
The circadian rhythm is the body’s internal clock, regulating biological processes on a cycle of approximately 24 hours. It influences sleep, wakefulness, digestion and even the production of hormones like melatonin.
This rhythm is synchronized by external signals, mainly daylight. When it is disrupted, for example by drinking coffee in the evening, it can affect the quality of sleep and increase the risk of cardiovascular disorders.
-Studies show that respecting the circadian rhythm is essential for optimal health. For example, melatonin, produced at the end of the day, helps you fall asleep. Caffeine, on the other hand, can delay this production if consumed too late.
Understanding and respecting this natural rhythm allows you to better manage your energy, your sleep and your overall health. This explains why the timing of coffee consumption is so important to maximize its benefits.
What is melatonin?
Melatonin is a hormone produced by the brain, mainly in the dark. She plays a key role in the regulation of the sleep-wake cycle, helping to synchronize our internal clock with the natural cycles of light and dark.
This hormone is often called “sleep hormone” because it promotes falling asleep and improves the quality of rest. Its production is inhibited by light, particularly blue light from screens, and by stimulants such as caffeine.
Adequate levels of melatonin are essential for restful sleep. A disruption in its production, due for example to drinking coffee in the evening, can lead to insomnia or circadian rhythm disorders.
In addition to its role in sleep, melatonin has antioxidant and anti-inflammatory properties. It thus helps protect cells and support cardiovascular health, which reinforces the importance of preserving balance.
What is chlorogenic acid?
Chlorogenic acid is a bioactive compound found abundantly in coffee, but also in certain fruits and vegetables. It is recognized for its antioxidant and anti-inflammatory properties, helping to protect cells against oxidative damage.
This compound plays a role in regulating metabolism, notably by reducing the absorption of sugars in the intestine. This can help stabilize the blood sugar and prevent diseases like type 2 diabetes.
Additionally, chlorogenic acid is associated with a reduction in fat storage, making it a potential ally for weight management. Its effects on cardiovascular health are also studied, particularly for its impact on blood pressure.
Chlorogenic acid is thus one of the many beneficial compounds in coffee, partly explaining why this drink can have positive health effects when consumed in moderation and at the right time.
