Two of the most nutritious plants in the world are weeds- wild spinach and nutrient-rich grass- and some traditional dishes like the Mediterranean ones, are frequently using wild green plants, herb or spices. The surrounding fields and woods are full of plants that contain higher levels of phytochemical substances than their domesticated relatives. Why? Because of the fact that these plants had to defend themselves against pests and diseases. For along time, man has selected and cultivated the sweet plants, many of the compounds that plants produce to defend themselves have a bitter taste. Also, wild green plants are generally richer in omega-3 fat acids than their domestic relatives, who have been selected precisely to resist more after they are collected.

If you have the chance, eat meat from wild animals. Generally the meat from hunted animals contains less saturated fat and more omega 3 fat acids than the meat from domestic animals. The hunted animals that we eat have a varied nutrition, based more on plant than on cereals. (The nutritional profile of cattle raised on pasture is very similar to that of hunted meat)
Generally, wild fish have higher levels of omega-3 fatty acids than farmed fish, which are often fed with grain. If we judge by the experience of the population who consume a lot more fish, like Japanese, it would be possible that eating several times more wild fish every week we could reduce the risk of heart affections, live longer and maybe we could be even happier.

I still hesitate to recommend you wild species because many of them are in danger of extinction; many wild fish almost disappeared because of overfishing. So far, all the recommendations offered comply with your health and the environmental health. Most of them come to support agricultural practices that enhance soil and water health. Unfortunately it is in this case not recommended. There are too few animals and wild fish left (except deer and wild pigs) so that we can reduce them by hunting them. Luckily, some of the most nutritious fish species like salmon, mackerel, sardines and anchovies, are well managed and in some cases, there are even plenty of them. So do not forget this full of fat fishes.