Affiliate Disclosure

Upstream Longevity is free to read. To keep it that way, some pages may include affiliate links. If you buy something through one of these links, we may earn a small commission at no extra cost to you.

Our rules

• Any page with affiliate links says so clearly near the top and next to the links.
• Affiliate links never change our conclusions or evidence grades. We publish the same honest assessment whether or not a product has an affiliate program.
• We only say we personally use a product if that's actually true.
• When we suggest products, we first explain what to look for (form, dose, third-party testing), so you can judge any option yourself.

Questions? Email hello@upstreamlongevity.com.

Last updated Nov 7, 2026