The most effective way to start is by focusing on the a list of produce that typically contains the highest levels of pesticide residue when grown conventionally. Experts from the Environmental Working Group (EWG) and health researchers suggest buying organic for these specific items:

Celery , tomatoes , and potatoes are high-risk for absorbing synthetic fertilizers and pesticides. Meat and Dairy

Beyond produce, organic are often recommended to avoid the antibiotics and synthetic growth hormones used in conventional livestock farming. 12 Foods You Should Always Buy Organic - San-J

Strawberries , grapes , apples , peaches , nectarines , and cherries absorb chemicals easily through their delicate skins.