By having dusts in our minds, does this bring upon illness to our bodies? These dusts are regret, covetousness, self-love, greed, and arrogance. In the Ofudesaki, God tells us that in the world, illness should not exist. It exists because there are paths of the mistaken mind. The important word is path, which implies an action upon the dusts in the mind. God tells us both in the Mikagura-uta and Ofudesaki that the path of the mistaken mind leads to illness.
Of course by having these dust in our minds, we are more prone to act upon them when inconveniences, or temptations occur in our lives. But if we understand the heart, and how it explains karma and reincarnation, we may be able to resist acting upon these evil thoughts. This will eventually prevent illness from inflicting our bodies.
Yes, the origin of illness is from the dusts in our minds. The dusts by themselves do not cause illness. It is the action upon these dusts that create illness. If we ponder the dusts in our minds when obstacles occur in our lives, and not act upon them, we can prevent illness in the future. By this same process of non-action upon these dusts, we can also eliminate them from our minds, as the path of the dust gets weaker and weaker, until the dust is eliminated from the mind.