What science actually says about Bluetooth and brain health Bluetooth devices emit low-power radiofrequency (RF) radiation that is well below international safety limits and does not cause tissue heating or brain damage (WHO, FDA). However: • Heavy metals such as lead and mercury are proven neurotoxins • Chronic exposure impairs cognition, mood, and development • Sleep disruption and constant stimulation from devices can affect focus and mental health There is no evidence that heavy metals ampli