As we read chapter 1 in Genesis, we see that God prepared the earth for our habitation.
In Day 3, vegetation was created after light, water, and soil were created in order to sustain its life cycle. Vegetation was created to be food for man and providing the nutrients to sustain our lives.
Since God created man from the soil (and breathed life into him, yes YHWH!), the very nutrients in our bodies came from earth! So how do we sustain our bodies with the nutrients we need to keep us healthy? By using and eating the herbs and fruit which draw those nutrients from the earth's soil, man can regulate his intake of those nutrients and the body can break them down into the basic elements/compounds that is needed to fuel and repair cells (all cells) within the body.
We just need to know how to identify the herbs and fruits with the properties we are searching for and use them in the correct manner to benefit our bodies. If it is to help us internally, then we need to find the correct way to ingest the herb/fruit. For the external areas, we develop ways to apply the herbs/fruits to help with the care of our skin and hair.
I am humbled to know that I serve a mighty God Who has given us everything we need to help us on our journey. Thank you for allowing me to help you!