Even better, eat fatty fish! This may sound weird but adding consistent sardines/herring/mackerel/salmon to your diet can be life changing. They are nutrient powerhouses, they’re the best dietary sources of both vitamin D and DHA/EPA fatty acids. Of course, they’re also good sources of protein.
Most people I’ve mentioned this to will say something like “but they’re so fishy” or think that sardines are disgusting cat food. At least for canned sardines, what a lot of people don’t know is that there is a wide range of quality in both the packing and actual fish - fishy odors are from a chemical TMAO that is a byproduct of decomposition and anecdotally is more common in the cheap brands. There are brands like Matiz and Nuri that have much higher quality sardines; they’re also physically much larger than what you might think sardines are supposed to look like, with only 3 or so fish per tin. I also like this new brand Minna for a slightly cheaper option.
Small fish like sardines have very low amounts of heavy metals to the point it’s negligible. I couldn’t confidently tell you anything about microplastics though
Most people I’ve mentioned this to will say something like “but they’re so fishy” or think that sardines are disgusting cat food. At least for canned sardines, what a lot of people don’t know is that there is a wide range of quality in both the packing and actual fish - fishy odors are from a chemical TMAO that is a byproduct of decomposition and anecdotally is more common in the cheap brands. There are brands like Matiz and Nuri that have much higher quality sardines; they’re also physically much larger than what you might think sardines are supposed to look like, with only 3 or so fish per tin. I also like this new brand Minna for a slightly cheaper option.