Canned tuna is a popular, affordable, and protein-rich meal choice. However, your favorite tuna sandwich might be hiding a hidden danger: mercury contamination.

Mercury is a toxic heavy metal that can harm the nervous system, particularly with long-term exposure. Alarmingly, not all canned tuna is equal—some types contain much higher mercury levels than others. Regular consumption without awareness could lead to dangerous intake over time. To protect your health, it’s essential to choose tuna varieties with lower mercury content and limit how often you eat them. Stay informed and make safer choices for your meals and overall well-being.