If I cut your fingers from both hands is about 100g of your anatomy, but the distress for your life is enormous. Even being less than 0.1% of your body mass. So

If I cut your fingers from both hands is about 100g of your anatomy, but the distress for your life is enormous. Even being less than 0.1% of your body mass. So the question here is not about the toxicity vs. body mass. Is about the amount of material in your digestive system.