A leading clinical nutritionist has issued a direct warning to UK shoppers, urging them to examine the small stickers on apples before purchasing. The expert states that the numeric code on these Price Look-up (PLU) stickers reveals crucial information about how the fruit was cultivated and what it may contain.
Decoding the PLU Number: What to Avoid
The specialist's advice is clear: consumers should consciously avoid apples where the PLU code begins with the digit 3 or 4. These numbers signify that the apple is non-organic, produced through conventional farming methods. The primary concern is not just the farming process itself, but a subsequent treatment.
Most conventional apples receive a coating of synthetic wax after harvest. This wax is applied to enhance shine, retain moisture, and extend shelf life. However, the nutritionist highlights a dual risk: the wax itself is an unnatural, potentially toxic substance, and it acts as a sealant, trapping any pesticide residues used during growth beneath a glossy layer.
The Safer Choice and a Practical Cleaning Tip
For a healthier option, shoppers are advised to actively seek out apples with a PLU code that starts with the number 9. This single digit is the international identifier for certified organic produce. Fruit with this code is grown without synthetic pesticides and should not be coated in harmful synthetic waxes, making it a significantly safer choice.
Recognising that organic fruit is not always accessible or affordable, the nutritionist provided a practical method to reduce risks from conventional apples. She recommends creating a simple cleaning solution by mixing one teaspoon of baking soda into two litres of water.
Soak the apples in this solution for a full 15 minutes, then scrub them vigorously with a firm brush. This process is claimed to be highly effective, potentially removing up to 90% of surface pesticide residue.
Beyond Apples: Foods for Brain Health
In related dietary advice, the same expert has recommended several key foods to support cognitive function. Emphasising that the brain is an energy-intensive organ, she advocates for nutrient-dense choices rich in omega fatty acids and antioxidants.
The recommended brain-health foods include:
- Walnuts
- Spinach
- Dark chocolate
- Avocado
- Sardines
This guidance, combined with the apple sticker warning, forms part of a broader message encouraging consumers to make more informed and health-conscious decisions at the supermarket.
