Experts have warned that the hours following waking up may be the most dangerous for heart health, due to natural physiological changes that occur in the body at the start of the day.
These changes, such as a rise in stress hormones, activation of the nervous system, and mild dehydration, place additional strain on the heart and increase the risk of cardiovascular events, especially among people who already have risk factors.
Here are four health conditions that are more common and more dangerous in the morning:
First: Heart attack
Between 6 a.m. and 12 p.m., the risk of a heart attack rises by 40%, while the risk of death from it increases by 29%. This is due to the surge in stress hormones and the pressure placed on the heart immediately upon waking. Smokers, people with high blood pressure and high cholesterol, and those with a family history or chronic stress are the most vulnerable.
Studies also indicate that these events are more common on Mondays, at the beginning of each month, and during the winter season.
Second: Stroke
The risk of stroke in the hours after waking increases by a striking 49%, according to Dr. William J. Elliott.
The same risk factors associated with morning heart attacks also apply to stroke. An analysis by the American Heart Association showed that both ischemic stroke (caused by a clot) and hemorrhagic stroke (caused by bleeding) occur more frequently in the morning. This runs counter to earlier studies that suggested they were more likely to happen during sleep.
Third: Rupture of an abdominal aortic aneurysm
This rupture occurs when the body’s main artery — extending from the diaphragm to the abdomen — becomes enlarged and weakened, causing it to burst.
This condition is closely linked to the body’s biological clock, as well as systolic blood pressure and hypertension.
Studies show that rupture follows a clear morning pattern. Medications that control heart rate and morning spikes in blood pressure may help manage the condition. It is considered one of the most dangerous medical emergencies.
Fourth: Pulmonary embolism
A pulmonary embolism occurs when a blood clot blocks a major artery in the lungs, and it can be fatal if not treated immediately. Studies indicate that this condition also follows a morning pattern, for the same reasons associated with the other conditions. However, factors such as sex and age may affect the timing of its onset and its severity.
Pulmonary embolism is a serious medical condition that requires urgent intervention. Those with risk factors are advised to consult a doctor to assess their condition.
While all of these events can occur at any time, the morning hours carry an added risk. Experts advise people at risk to watch for symptoms such as chest pain, difficulty breathing, and dizziness immediately upon waking. They also recommend staying hydrated and avoiding sudden morning exertion. Early detection and management of risk factors remain the key to prevention.
