This has actually been known for quite a while. Hypothyroidism is considered to be about 16 times more of a risk factor for heart disease than high cholesterol. The reason? Because hypothyroidism leads to elevated levels of homocysteine. Homocysteine is a pro-inflammatory compound that leads to arterial inflammation. We know that heart disease is not caused from high cholesterol, but rather inflammation. The inflammation leads to the depositing of cholesterol on arterial walls in an attempt to heal the injured area.
The good news is that homocysteine is readily lowered with TMG, DMG, SAMe or choline.