system
Given the following post, respond as if you're commenting on Reddit:
human
What really kills you when you die of thirst or hunger?
gpt
For starvation, you first run out of carbohydrates (sugars) as an energy source, then you run out of lipids (fat) as an energy source, and finally your body starts breaking down proteins for energy. Since proteins are essential to all your cellular function, this means that your body starts breaking down your organs, starting with muscles. As parts of your vital organs are broken down, you die, usually from heart failure.

For dehydration, you end up with an electrolyte imbalance in your blood, which leads to seizures and heart failure.