Summary
This article covers which common foods have the highest and lowest pesticide exposure, based on data referenced by Dr. Berg. The guidance is particularly relevant for people following a ketogenic diet, helping them prioritize where to spend money on organic produce. Understanding pesticide load by food type allows for smarter, budget-conscious grocery decisions.
Key Takeaways
- Avocados are among the cleanest foods available — buying conventional (non-organic) avocados is generally fine due to their naturally low pesticide exposure
- Raisins top the list for highest pesticide contamination, though they are typically avoided on a keto diet anyway
- Strawberries, spinach, and kale — popular keto-friendly foods — rank among the most pesticide-contaminated and should be purchased organic when possible
- Cabbage, onions, cauliflower, and broccoli fall on the low-pesticide end of the spectrum, making conventional versions a reasonable budget choice
- If you cannot afford to buy everything organic, prioritize organic for high-contamination items like strawberries, spinach, and kale
- Tomatoes and celery also appear on the higher-pesticide list and are worth buying organic if consumed regularly
Details
Highest Pesticide Foods (Prioritize Organic)
These foods were identified as having the greatest pesticide exposure:
- Raisins — highest contamination overall (largely irrelevant for keto followers)
- Strawberries — commonly eaten on keto; strongly recommended to buy organic
- Spinach — a keto staple with high pesticide load; go organic
- Kale — another popular keto green with significant pesticide presence
- Nectarines, apples, grapes, peaches, cherries, pears — high contamination, though most are limited or avoided on keto
- Tomatoes and celery — moderate to high contamination; worth sourcing organic
Lowest Pesticide Foods (Conventional Is Acceptable)
These foods showed the least pesticide exposure, making conventional purchases a reasonable option — especially on a tight budget:
- Avocados — one of the cleanest foods available; no need to pay premium organic prices
- Cabbage
- Onions
- Frozen peas
- Asparagus
- Eggplant
- Cauliflower
- Broccoli
Budget Strategy
For those who cannot afford an entirely organic grocery list, the practical approach is:
- Skip organic on low-pesticide items like avocados, broccoli, cauliflower, and cabbage
- Invest in organic versions of high-pesticide items you regularly consume — particularly strawberries, spinach, and kale