What to look for on labels to buy the healthiest tuna.
A great meal can start with something as simple as a can opener and a can of light tuna. Light tuna comes primarily from skipjack, a much smaller predatory fish than its cousin albacore or "white" tuna, which is also commonly found in cans. Light tuna provides a healthy dose of vitamin D along with heart-healthy omega-3s. Though it has fewer omega-3s than white tuna does, we go for light tuna because it also has less mercury. Any way you serve it, light tuna is a great catch.
Bisphenol-A (BPA), a chemical used in the linings of some food and drink cans, has been linked to the development of precancerous lesions and abnormal development of reproductive systems in animals. Some brands, including Wild Planet have switched to BPA-free cans (check labels). Light tuna also comes in BPA-free pouches, but we have yet to find light tuna in a pouch that is labeled as certified sustainable or caught by sustainable methods.