Cholesterol is a vital component of cell membranes and plays a key role in nervous system activity.

The proper level of this metabolite in the cardiovascular network is vital to good health.

Triglycerides are derived from food and transported to fat cells.

Hormones regulate the release of triglycerides from fat tissue to provide energy, but just as with cholesterol, the quantity of triglycerides present in the bloodstream involves a precise balance. 

Blood glucose supplies the main source of immediate energy to fuel almost every physiological function.

Its level should remain fairly constant. Sharp rises or spikes in blood glucose concentration should be minimized.

Blood pressure is a function of heart rate, fluid volume, resistance (constriction of dilation of blood vessels) and viscosity.

Blood pressure within a certain range allows for proper functioning of the system vessels, heart and other organs.