h age? What are some specific ways the livers changes? Do the cells die or do they become less efficient? What about the overall quality of the liver?...

How does the liver change with age? What are some specific ways the livers changes? Do the cells die or do they become less efficient? What about the overall quality of the liver? For example, do liver cell get replaced by fat with age?

Is there any specific data on how the efficiency of clearing toxins or breaking down medications in the liver changes with age? (with percent change?)