[The Dose Makes The Poison] Some chemicals that are harmful at a high dose are necessary for you to live! Too much of anything can be harmful.

name, date, period, title = “Water” Claim: How much water would you have to drink in a short period of time for it to kill you? Evidence: Use at least 3 examples from stories Reasoning: Since the stories are about different people with different ages and volumes, explain how you came to your answer. Conversions (approximations) 1 Gallon ≈ 4 Liters 8 cups ≈ ½ Gallon 1 Liter ≈ 1 Quart End

“The dose makes the poison”

What does this mean?

Supposedly harmful chemicals are only harmful at a certain dose Supposedly harmful chemicals are only harmful at a certain dose. Just because a chemical is present does not mean the chemical is harmful in the amount present.

Why is this bad logic? Formaldehyde causes cancer Vaccines have formaldehyde Therefore, vaccines are dangerous hint: it’s the same logic as… Water causes hyponatremia and even death Fruits have water Therefore, fruits are dangerous. The first example does not address the amount of formaldehyde in vaccines. The pear example on the last slide shows that the amount of formaldehyde in vaccines is very low compared to a safe amount found in pears.

This much will kill you Part 1 https://www.youtube.com/watch?v=vPszR0-vTqc Part 2 https://www.youtube.com/watch?v=IPrndNZ4m6w

Explain this to a 10 year old, and give an example

[The Dose Makes The Poison] Chemical X is harmful. Chemical X is in this food. Is it harmful to consume this food? What two pieces of information do you need in order to answer this question? How much of chemical X is in this food, and at what dose is chemical X harmful?