Pesticides

What are the harmful effects of pesticides in general?

Pesticides have a major effect on biological diversity, alongside habitat loss and climate change. They can have short-term toxic effects on directly exposed organisms, and long-term effects can result from changes to habitats and the food chain.

Pesticides can contaminate soil, water, turf, and other vegetation. In addition to killing insects or weeds, pesticides can be toxic to a host of other organisms including birds, fish, beneficial insects, and non-target plants.

What are the effects of pesticides on human health?

Pesticides can cause short-term adverse health effects, called acute effects, as well as chronic adverse effects that can occur months or years after exposure.

Acute (Immediate) Health Effects

Immediate health effects from pesticide exposure includes irritation of the nose, throat, and skin causing burning, stinging and itching as well as rashes and blisters. Nausea, dizziness and diarrhea are also common. People with asthma may have very severe reactions to some pesticides, particularly pyrethrin/pyrethroid, organophosphate and carbamate pesticides.

Chronic (Long-term) Health Effects

Chronic health effects include cancer and other tumors; brain and nervous system damage; birth defects; infertility and other reproductive problems; and damage to the liver, kidneys, lungs and other body organs. Chronic effects may not appear for weeks, months or even years after exposure, making it difficult to link health impacts to pesticides.

How do pesticides affect climate change?

Pesticides impact climate change throughout their manufacture, transport and application. When pesticides are made, three main greenhouse gases are emitted: carbon dioxide, methane and nitrous oxide.

EU Pestides risk indicators

The EU has defined two main risk indicators related to the use of pestides:

• Harmonised Risk Indicator 1 (HRI 1), measuring the use and risk of pesticides. Harmonised Risk Indicator 1 is calculated by multiplying the quantities of active substances placed on the market in plant protection products by a weighting factor. Active substances are grouped into four categories: insecticides

herbicides, rodenticides, and fungicides.

• Harmonised Risk Indicator 2 (HRI 2), which is based on the number of emergency authorisations

Links

• CPR (Californians for Pesticides Reform). CPR is a statewide coalition of more than 190 organizations, founded in 1996 to fundamentally shift the way pesticides are used in California.
• Directive 2009/128/EC EU Sustainable use pesticides directive 2009/128/EC, aims to achieve a sustainable use of pesticides in the EU by reducing the risks and impacts of pesticide use.