Evidence-checked healthspan habits · San Luis Obispo, California

Refunds

Refund policy

Last updated October 2026.

14 days, no questions asked

If a guide isn't useful to you, ask for a refund within 14 days of buying it and you'll get your money back in full. You don't need to give a reason.

How to ask

Reply to your Gumroad receipt email and say you'd like a refund.

Refunds go back to the card or account you paid with. Most banks show them within 5 to 10 business days.

Updated editions

When we update a guide, you can download the new edition from your Gumroad library at no extra cost.