Most important to choose organic

Food is the main source of human exposure to environmental toxins. You can't find everything in an organic version (yet), but if you just change the below things towards organic ones, both you and the environment will benefit hugely from that. The largest amount of pesticides are used on;

Coffee
I've written about this before and it's easy to find organic coffee in most shops.

Bananas
40-50 tons of pesticides are used in every 10.000 square kilometers (around 4000 square miles) each year. One of the pesticides used is chloropyrifos. Chloropyrifos is a neurotoxin used in the plastic bags that surrounds the banana stem. Because of this, the people harvesting our bananas may suffer from loss of apetite, insomnia, concentration difficulties, higher risks of lungcancer and even be suicidal. Getting close to this chemical is especially dangerous to the nervous system of children up to the age of 6 and there has been studies made that suggests a link between exposure to this kind of pesticide (and other organophosphates) and ADHD. Scientists even take it as far as to compare to the exposure to lead which 40 years ago proved to be very harmful. In Sweden it's easy to find organic bananas. Almost every food store has them.

Grapes
Grapes is the most commonly grown fruit in the world (about 45 percent). Grapes are sensitive to pests, a lot of times they are sprayed with pesticides even before any breakouts have been noticed, and grapes shows traces of pesticides more often than any other food. There are also several different chemicals used and how those chemicals interact is still not known. Even though each chemical in itself may not be harmful in a very small dose, they may cause damage together. Don't forget that the pesticides used on grapes also affects raisins, wine and champagne. About 85 procent of all grapes are used in producing wine. Organic grapes can be hard to find in Sweden, but organic raisins and organic wines are easy.

Potatoes
In Sweden this is the crop where the most pesticides are being used, and among those the King Edward and Bintje are the most sprayed ones. A Swedish potato is on average sprayed with pesticides 7 (some as much as 13!) times before they're harvested. If all Swedes would choose only Swedish, organic potatoes we would stop 95 tons of chemicals each year from harming ourselves and our environment. The most common pesticides used are Shirlan and Ranman. They are highly toxic towards aquatic organisms and also harmful to pollinating insects like bees.

Dairy products
Organic dairy means that the cows are fed organic food only, and most of it has to be grown on the farmers own farm. The animals should be allowed to move freely and to eat grass outside for at least eight hours a day during the warm season. The calves are allowed to suckle and to stay with their mothers for a longer period. Antibiotics are not allowed as a precaution. Happy, healthy animals, less chemicals and less antibiotics in our food. Luckily it's very easy in Sweden to find organic dairy. Milk, cream, butter, cheese, yoghurt etc can all be found in organic versions at the local supermarket.

Read more at Naturskyddsforeningen