The liver does not produce triglycerides at random.
It responds to signals.
Under normal conditions, the liver balances how much energy it receives, how much it uses, and how much it stores. When that balance is stable, triglyceride production and export remain relatively controlled.
But that balance can shift.
When excess energy is present, particularly in the form of carbohydrates and fats, the liver begins converting that excess into triglycerides. This process allows the body to store energy in a form that can be transported and used elsewhere.
But the liver has limits.
It cannot store unlimited amounts of fat.
As triglycerides accumulate within the liver, they have to go somewhere.
And the only way out is through export.
That export happens through VLDL.
More triglyceride inside the liver means more triglyceride that needs to be packaged, and more packaging means more particles entering circulation.
At the same time, the signals that regulate this system can become less precise.
In certain metabolic states, the liver continues producing triglycerides even when energy is already abundant. Instead of slowing down, the system keeps pushing forward.
Production continues.
Export increases.
The result is a shift in the system.
More triglycerides are created.
More VLDL particles are released.
And more energy is being pushed into circulation than the body immediately needs.
This is not a failure of a single pathway.
It is a change in how the system is being driven.