What Effects Does Caffeine Have?

Many people enjoy caffeine, but a common search is “caffeine side effects” because not everyone feels great on it. Too much caffeine can cause issues like anxiety, sleeplessness, agitation, palpitations, diarrhoea, and restlessness, and an NHS handout flags these effects at very high intake levels. Sensitivity varies, so some people feel jittery or struggle with sleep even at lower amounts, especially later in the day.

Caffeine can also interact with how you feel if you are prone to anxiety or heart flutter feelings. The NHS notes that caffeine can disrupt sleep and make anxiety harder to manage. It also appears as a common trigger to avoid for heart palpitations. If you love coffee but not the buzz, decaf coffee is a simple way to keep the ritual and flavour, while reducing the stimulant load.