Privacy Policy

EVIDENCE BASED LONGEVITY ("we," "us," or "our") operates the website located at evidencebasedlongevity.co (the "Site"). We are committed to protecting your personal information and being transparent about what data we collect, why we collect it, and how you can exercise control over it. This Privacy Policy applies to all visitors, users, and quiz participants interacting with our Site.

By accessing or using the Site, you acknowledge that you have read and understood this Privacy Policy. If you do not agree with any part of this policy, please discontinue use of the Site.

Information We Collect

We collect information in two ways: information you voluntarily provide to us, and information collected automatically when you use the Site.

Information you provide directly:

• Email address — collected when you complete our supplement stack quiz ("Build My Stack") or subscribe to our newsletter. Providing your email is entirely voluntary; you may use most of the Site without submitting it.
• Quiz responses — answers to questions about your health goals, age range, current supplement use, and lifestyle, submitted through the quiz. These responses are used solely to generate a personalized supplement recommendation and are not combined with other identifying data unless you also provide your email.
• Contact messages — if you contact us by email, we retain the content of your message and your reply-to address in order to respond.

Information collected automatically:

• Usage data — pages viewed, links clicked, time spent on pages, scroll depth, and referring URL, collected by Google Analytics.
• Device and browser data — browser type, operating system, screen resolution, device type, and IP address (anonymized where possible).
• Cookies and similar technologies — see Section 3 for details.

We do not knowingly collect data from individuals under the age of 16. If you believe a minor has submitted personal information to us, please contact us immediately so we can remove it.

How We Use Your Information

We use the information we collect for the following purposes:

• To deliver quiz results — your quiz responses are processed to generate and display personalized supplement stack recommendations on-screen and, if you opt in, to send those results to your email address.
• To send newsletters and updates — if you subscribe, we may send you emails about new supplement reviews, updated evidence ratings, or longevity research we find notable. You may unsubscribe at any time using the link in any email we send.
• To improve the Site — aggregate, anonymized analytics data helps us understand which content is useful, which pages need improvement, and how visitors navigate the Site.
• To respond to inquiries — if you contact us, we use your information solely to respond to your question or request.
• To comply with legal obligations — we may retain or disclose information as required by applicable law or in response to valid legal process.

We do not sell your personal information. We do not use your personal information for automated decision-making or profiling that produces legal or similarly significant effects.

Cookies & Analytics

We use cookies — small text files stored on your device — and similar tracking technologies to understand how visitors interact with the Site. Below is a description of the cookies we use:

Essential cookies: Required for the Site to function correctly (e.g., session management). These cannot be disabled without breaking core Site functionality.

Analytics cookies (Google Analytics): We use Google Analytics 4 (GA4) to collect aggregated, anonymized information about Site usage. This includes page views, session duration, device type, and traffic sources. Google Analytics may set the following cookies:

• _ga — distinguishes unique users; expires after 2 years.
• _ga_[container_id] — maintains session state; expires after 2 years.

IP anonymization is enabled. We do not use Google Analytics to collect personally identifiable information. Google's data practices are governed by the Google Privacy Policy. You may opt out of Google Analytics tracking using the Google Analytics Opt-Out Browser Add-on.

Affiliate tracking cookies: When you click an affiliate link on the Site, the merchant (e.g., Thorne, Life Extension, AgelessRx, or Nordic Naturals) may set cookies on your device to attribute any resulting purchase to our referral. We do not control these cookies. Refer to each merchant's privacy policy for details.

We do not currently respond to "Do Not Track" signals because no universally accepted standard for such signals has been established. California residents may exercise their opt-out rights as described in Section 6.

Third-Party Links

The Site contains links to third-party websites, including supplement retailers, academic journals, and other longevity-related resources. These links are provided for your convenience and informational purposes only.

EVIDENCE BASED LONGEVITY does not operate, control, or endorse any third-party website. We are not responsible for the privacy practices, data collection, content, or security of any third-party site. We encourage you to review the privacy policy of any external site before submitting personal information to it.

Third parties we commonly link to include but are not limited to:

• Thorne Research (thorne.com)
• Life Extension (lifeextension.com)
• AgelessRx (agelessrx.com)
• Nordic Naturals (nordicnaturals.com)
• PubMed / NCBI (pubmed.ncbi.nlm.nih.gov)
• Examine.com

Affiliate Disclosure

EVIDENCE BASED LONGEVITY participates in affiliate marketing programs. This means we may earn a commission when you purchase a product through a link on our Site, at no additional cost to you. Our affiliate partnerships currently include, but are not limited to:

• Thorne Research Affiliate Program
• Life Extension Affiliate Program
• AgelessRx Partner Program
• Nordic Naturals Affiliate Program
• Other supplement brands reviewed on the Site

Affiliate commissions help fund the ongoing research, writing, and maintenance of this Site. However, our editorial decisions — including evidence ratings, product rankings, and which supplements we choose to cover — are made independently of commercial considerations. We do not accept payment to improve a product's rating. See our full Affiliate & Medical Disclaimer for a detailed statement on editorial independence.

Affiliate links are disclosed at the point of use on product pages and in our site-wide disclosure. This Privacy Policy's affiliate section addresses how affiliate programs may interact with your data.

Your Rights — CCPA & GDPR

Depending on your location, you may have certain rights regarding your personal information. We honor these rights regardless of whether you are located in California, the European Union, or elsewhere.

California Residents (CCPA / CPRA):

• Right to Know — You may request a disclosure of the categories and specific pieces of personal information we have collected about you in the past 12 months, the categories of sources from which it was collected, the purposes for which it was used, and any third parties with whom it was shared.
• Right to Delete — You may request that we delete your personal information, subject to certain exceptions.
• Right to Correct — You may request that we correct inaccurate personal information we hold about you.
• Right to Opt Out of Sale or Sharing — We do not sell personal information. We do not share personal information for cross-context behavioral advertising.
• Right to Non-Discrimination — We will not discriminate against you for exercising any of the above rights.

EEA / UK Residents (GDPR / UK GDPR):

• Right of Access — You may request a copy of the personal data we hold about you.
• Right to Rectification — You may ask us to correct or update inaccurate personal data.
• Right to Erasure — You may request deletion of your personal data ("right to be forgotten").
• Right to Restriction — You may ask us to restrict how we process your data while a complaint is being resolved.
• Right to Data Portability — Where processing is based on consent or contract, you may request your data in a structured, machine-readable format.
• Right to Object — You may object to processing based on legitimate interests, including direct marketing.
• Right to Withdraw Consent — Where we process data based on your consent, you may withdraw that consent at any time without affecting the lawfulness of prior processing.

Our lawful basis for processing data submitted through the quiz or email signup is your consent. For analytics, our lawful basis is our legitimate interest in understanding Site usage to improve it.

To exercise any of these rights, please contact us at arnoldsandlow@gmail.com. We will respond to verified requests within 30 days (or 45 days if an extension is required, of which we will notify you). We may ask you to verify your identity before processing your request.

If you are in the EEA or UK and believe your rights have not been honored, you have the right to lodge a complaint with your national data protection authority.

Data Retention & Security

We retain personal information only for as long as necessary to fulfill the purposes described in this policy, unless a longer retention period is required or permitted by law.

• Email addresses — retained until you unsubscribe or request deletion.
• Quiz responses — retained in aggregated, anonymized form for research purposes; personally identifiable quiz data is deleted within 12 months of collection unless linked to an active email subscription.
• Analytics data — retained within Google Analytics for 14 months, then automatically deleted.

We implement reasonable technical and organizational measures to protect your personal information against unauthorized access, loss, or disclosure. However, no method of transmission over the internet or method of electronic storage is completely secure, and we cannot guarantee absolute security.

We do not transfer your personal data internationally except through Google Analytics, which may process data on servers in the United States. Google LLC is certified under the EU-U.S. Data Privacy Framework.

Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please reach out:

We will do our best to respond to all inquiries within 5 business days. For formal rights requests (CCPA / GDPR), please allow up to 30 days for a full response.

We reserve the right to update this Privacy Policy at any time. Material changes will be indicated by an updated effective date at the top of this page. Your continued use of the Site after any changes constitutes acceptance of the revised policy. We encourage you to review this page periodically.