These all exist and express themselves normally as states and conditions in every living being. The very nature of susceptibility implies the existence of the wherewithal to satisfy susceptibility. To supply need. To satisfy hunger and desire. To attract affinities.
Demand is always consistent with universal law.
The only thing that satisfies susceptibility is the symptomatically similar medicine. We are made ill only when our organism is sufficiently disposed. I place this at Hokhmah at the top of the right hand pillar, because now we are dealing with a continually inflowing impulse. The Vital force converts energy from its surroundings to nourish the organism. This allows the body to maintain myriads of interlocking biological systems in working order.