Caffeine is also found in black tea, green tea, energy drinks, and some soft drinks. Its effects can last for several hours, depending on the amount consumed and individual sensitivity.
People who experience insomnia, palpitations, or difficulty controlling their blood pressure may benefit from limiting caffeine, particularly later in the day. Switching to water or a caffeine-free drink in the evening may help.
Importantly, coffee has not been established as a direct cause of an overnight stroke simply because it is consumed before bed. Individual risk depends on factors such as blood pressure, smoking, diabetes, heart rhythm disorders, and other medical conditions.
Chapter 3: Drink Two — Alcohol Before Sleep
Alcohol is another beverage worth limiting before bedtime. Although it may initially cause drowsiness, it can interrupt normal sleep patterns and worsen snoring or obstructive sleep apnea.
Heavy alcohol consumption can also raise blood pressure and increase the risk of stroke over time. The risks depend on drinking patterns and individual health, and avoiding alcohol is the safest choice for some people.