All Flashcards
Why are dose-response studies important?
They help us find safe and effective levels of substances and minimize harm.
What does LD50 measure?
It measures the toxicity of a substance.
Why is understanding the source of a contaminant important?
Understanding the source is key to mitigation.
Why is mercury in fish a concern?
Methylmercury builds up in predatory fish, posing a risk to human health upon consumption.
Why is lead exposure particularly harmful to children?
Lead can cause brain damage and developmental problems in children.
Why is heat a concern with BPA?
Heat is the enemy! BPA leaching is more about temperature than the age of the container.
What is the shape of the dose-response curve?
Typically S-shaped (sigmoidal).
What is the relationship between dose and response?
Small dose increases = small response increases initially. Steep increase in response as the dose increases further.
Why are contaminants a global concern?
Contaminants can cause harm to human health and the environment, impacting ecosystems and economies worldwide.
Why are endocrine disruptors a concern?
They interfere with hormone systems, potentially leading to reproductive, developmental, and other health problems.
What is LD50?
The dose of a substance that kills 50% of a test population.
Define 'contaminant'.
A substance or organism found where it shouldn't be, causing harm to health or the environment.
What are endocrine disruptors?
Chemicals that interfere with hormone systems.
Define dose-response study.
Studies showing how an organism responds to different doses of a chemical or drug.
What is methylmercury?
A form of mercury that builds up in fish.
What are VOCs?
Volatile Organic Compounds, colorless, flammable gas.
How can proper disposal of mercury products help the environment?
Prevents mercury from entering the environment and accumulating in ecosystems.
How can choosing BPA-free products promote sustainability?
Reduces the demand for BPA-containing plastics and minimizes potential health risks.
How can reducing consumption of canned foods promote sustainability?
Decreases exposure to BPA from can linings and reduces waste associated with canned goods.
How can choosing phthalate-free products promote sustainability?
Reduces exposure to endocrine disruptors and supports the development of safer alternatives.