The Blueberry Boom
It’s no secret Australians, and consumers worldwide, have fallen in love with berries. In Australia, berry intake has grown sharply over recent years, and blueberries in particular have become a “clean eating” staple. They’re praised for antioxidants, linked to brain and heart health, and have become one of the fastest-growing categories in fresh produce.
But that popularity has also increased scrutiny around pesticides in Australian blueberries, especially when exposure assumptions change. As consumption rises, even low residues can become more significant for higher-intake groups like children. That’s exactly why dimethoate in berries has come under closer regulatory attention.
Australia’s regulator, the Australian Pesticides and Veterinary Medicines Authority (APVMA), implemented an APVMA dimethoate suspension affecting product registrations and label approvals for dimethoate use on blueberries (and also raspberries and blackberries). The decision followed testing that detected dimethoate residues in supermarket berries, including samples where a child could exceed the acceptable daily intake after eating a relatively small number of berries.
While residues detected under approved use patterns were considered unlikely to pose a serious health risk for most people, the APVMA concluded the margin of safety was no longer sufficient, particularly for young children. In this context, the APVMA dimethoate suspension is a precautionary step designed to reduce risk while the evidence base and use conditions are reassessed.
If you’re wondering are blueberries safe to eat, the key takeaway is that regulators have not advised consumers to stop eating berries. Instead, the decision highlights the importance of monitoring, safety margins, and ongoing review, especially when pesticides are used on foods consumed frequently and in high volumes.
Dimethoate is an organophosphate insecticide that has been used in Australia since the 1950s. It belongs to a group known as acetylcholinesterase inhibitor pesticides. These chemicals work by blocking acetylcholinesterase, an enzyme required for normal nerve signalling. In insects, this causes nervous system disruption and death. Mammals (including humans) also rely on acetylcholinesterase, which is why dimethoate health risks are taken seriously in exposure assessments.
A further concern is its breakdown product, omethoate, which can be a more potent acetylcholinesterase inhibitor in mammals than dimethoate itself. This increases the focus on not just the active ingredient, but also what it becomes after application and metabolism in environmental and biological systems.
The article’s core point remains: risk depends on dose, duration, and route (ingestion, inhalation, dermal). Reported effects associated with higher exposure can include gastrointestinal symptoms and nervous system-related symptoms. At higher doses, acute organophosphate exposure has been associated with sweating, blurred vision, breathing difficulty, and changes in heart rate, consistent with acetylcholinesterase inhibition.
The issue isn’t limited to berries. Globally, dimethoate has been used on a range of crops and in livestock parasite control. However, international regulatory approaches have tightened over time as risk assessments are updated and exposure data improves. Australia’s APVMA dimethoate suspension reflects this broader trend: chemicals with long use histories can still face restrictions when new evidence changes the safety margin, especially as diets and consumption patterns evolve.
So, are blueberries safe to eat? For most people, regulators have not suggested avoiding berries altogether. The APVMA position in this story is that typical residue levels are unlikely to pose a serious risk to human health, but that the margin of safety, particularly for children, needed strengthening.
A practical step consumers often ask about is washing pesticides off berries. Washing won’t remove all residues (some pesticides may bind to waxy surfaces or exist in trace amounts that are difficult to fully remove), but rinsing berries can help reduce surface residues and remove dirt or other contaminants. The broader point is that food safety is layered: regulation, monitoring, grower compliance, and consumer handling all play roles.
This situation is a clear reminder that chemical safety management is not optiona, it’s essential. For growers, agrochemical suppliers, food producers, and retailers, the APVMA dimethoate suspension demonstrates how quickly requirements can change when new exposure data emerges.
Strong chemical safety management means:
For organisations working across agriculture, supply chains, and food production, Chemwatch supports proactive chemical safety management through better visibility and governance. Our tools help teams maintain SDS compliance, manage regulatory updates, document chemical use decisions, and align safety and compliance workflows across sites and products. When regulatory settings shift, Chemwatch helps businesses respond faster, keep records consistent, and reduce the risk of gaps between what’s used in the field and what’s documented in safety systems.
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