I think the per kg is important there. 192mg/kg of body weight is the lethal dose. So for example a 100kg person would need 19,200mg of caffeine to be a lethal dose.
To edit: that’s not to say that the lethal dose in this picture is wholly accurate. Caffeine has been known to cause cardiac arrest even in lower doses.
The caffeine thing is totally wrong. A healthy adult can safely consume up to 400mg of caffeine a day.
I think the per kg is important there. 192mg/kg of body weight is the lethal dose. So for example a 100kg person would need 19,200mg of caffeine to be a lethal dose. To edit: that’s not to say that the lethal dose in this picture is wholly accurate. Caffeine has been known to cause cardiac arrest even in lower doses.
Good point, I hadn’t considered it was based on body weight, and rather thought it was just median population
LD50 is specifically a dose that kills 50% of the subjects.
Lower doses can kill, just less than 50% of people.