Heart Palpitations in Adults

Common Causes

• Stress or anxiety — Strong emotions like worry or panic can speed up the heart as part of the body's fight-or-flight response, which research suggests affects many adults (Cleveland Clinic).
• Caffeine or stimulants — Coffee, energy drinks, or nicotine might trigger irregular beats by stimulating the heart, common in busy adult lifestyles (Mayo Clinic).
• Medications or dehydration — Some cold medicines, asthma inhalers, or low fluids could disrupt heart rhythm, especially if electrolyte levels like potassium drop (American Heart Association).
• Thyroid issues — An overactive thyroid (hyperthyroidism) may cause hormone changes that lead to faster heartbeats in adults (Mayo Clinic).
• Hormone changes — Menstruation or menopause might bring palpitations due to shifting estrogen levels (Cleveland Clinic).

Learn More

For a full overview of this symptom, including home remedies and when to see a doctor, read our complete guide on Heart Palpitations.