The inner lining of the boxes, the detail that nobody looks at
This is perhaps the least known aspect for the general public, yet one of the most concerning. The majority of canned goods are coated internally with a plastic resin that may contain bisphenol A (BPA) or similar substances. These chemical compounds can migrate into the food, particularly during heat sterilization. Repeated exposure is associated with certain hormonal and metabolic imbalances. When possible, choose BPA-free canned goods or alternate with fresh fish.
Canned sardines remain a valuable ally in your kitchen — you just need to learn how to choose them and consume them with a little more care.
