Heavy metals like arsenic, lead, mercury, and cadmium are invisible toxins that accumulate in your body over time because your body can’t eliminate them effectively. Unlike other pollutants that your body can process and remove, heavy metals build up progressively and cause cumulative damage to organs, nervous system, and overall health. They’re found in water sources affected by industrial runoff, old plumbing systems with lead pipes, soil contaminated by pesticides and fertilizers, and air pollution from manufacturing facilities. The danger lies in their ability to cause irreversible health damage while remaining completely undetectable without professional testing, making early detection crucial for protection.