Distance from professional help changes the calculus of health off-grid: prevention matters more, and being prepared for minor problems yourself matters more. The books treat this carefully, and so should any reader — the aim is sensible preparation, not self-doctoring beyond your competence.
Prevention comes first
Good hygiene, safe water, careful food handling and sensible working practices prevent far more problems than any first-aid kit resolves. Off-grid, prevention is the most valuable health strategy you have.
Keep a considered first-aid kit
A well-stocked kit suited to your household and its distance from care is a basic necessity. Knowing how to use what's in it matters as much as owning it, so pair supplies with proper training.
Maintain hygiene without mains services
Handwashing, clean water for washing, and safe waste handling keep a household well when there's no mains supply. These routines are simple but decisive for preventing illness.
Know your limits and your plan
Part of preparation is knowing when a situation needs professional care and how you'll reach it. Having that plan — and the means to act on it — is as important as any supply.