When Should You Take Heart Palpitations Seriously? , Palpitations are the conscious awareness of your heartbeatlike feeling it skip, race, or flutter. While theyre often harmless, there are times If you've been feeling weak, foggy, or experiencing numbness in your hands and feet, it could be a sign of vitamin B12 deficiency. B12 is essential for nerve function and red blood Supplements That Can Cause Heart Palpitations: Calcium, Vitamin D, Magnesium, and More Vitamin B12 plays a crucial role in your nervous system, blood formation, and energy levels When levels are too low, your body sends warning signals you shouldn't ignore. Common symptoms of