Originally Posted by
BBG
Most cells use glucose for ATP production but not all cells.
I don't really want to argue semantic, but:
1. Ketones yield GTP and ATP which is used by cells for various processes (RNA synthesis and as a source of energy primarily).
2. The brain is made of cells that can take ketones for energy. Yes it does preferentially run on glycogen.
3. Heart cells can use ketones. Actually, the heart prefers to run on fatty acids. The heart is also made of cells.
4. Our bodies cells use fatty acids for ketones for energy (ATP) when we aren't eating sugar and have depleted our internal supplies.