Objective

• To point out the relationship between dose and effect
  > For every substance there is a dose below which no effect occurs (threshold dose) and another above which poisoning occurs
  >> Thus, all substances are potentially safe or poisonous
  >>> This depends only on dose
• To point out that natural substances may be highly poisonous and manmade substances may be of low toxicity
  > For example, Clostridium botulinum toxin is poisonous at even very low doses but synthesized sorbitol has a very low toxicity at high doses
  > Nicotine (natural) is highly poisonous but synthetic vitamin C is highly beneficial

Contents > 16 slides
General Considerations - Toxicity and Dose (+ 2 graphs) - Nutrients, Drugs and Poisons (2 slides) - Natural and Synthetic Chemicals (2 slides) - Homeostasis - Avoiding Poisoning (2 slides) - Self Assessment - True or False? (2 slides) - Self Assessment - Checklist (2 slides)