I think you will get it.
It is not a misspell.
The concept is formed from a Venn diagram of 3 life elements, titled a Wellth Test: Health + Time + Joy.
Food, dare we say ‘nutrition’, can be equated in aspects of all 3 of those elements; healthy food, enough time to look after one’s health, and a bit of pleasure, which is the right amount of brain chemicals that upon contented reflection produce a post hoc sense of Joy. Joy is reflective, as are memories (good times).
Anyway a product of combining Health + Time + Joy = (this thing called) Wellth.
It’s different to wealth, and maybe not mutually exclusive. Unless we work at it, it becomes as ephemeral as a post in an online forum.
Striving to be Healthy, Wellthy, and Wise, with the maximisation of Wellth-span.
This maybe too much of a divergence of thought. But it is fuelled by nutritionally derived ketones.