Last updated: August 2026
This Cookie Policy explains what cookies and similar technologies we use, who stores them, for what purpose, and how you can manage or withdraw your consent.
Cookies are small text files, and similar technologies such as local storage, that a website saves on your device (computer, tablet or mobile) when you visit it. The EU ePrivacy Directive (Directive 2002/58/EC) and the General Data Protection Regulation (GDPR) require websites to inform users about the cookies they use and, where they are not strictly necessary, to obtain consent before storing or accessing them.
The website and the TrueWeight medical service are operated by German Andres Lizcano Mejia, with Tax ID (NIF/NIE) Z0636863K, self-employed professional (autónomo) in Spain. Contact: doctor@trueweight.eu.
We use the browser's local storage to save your preferences and record your consent. These technologies are strictly necessary for the site to function or to apply your preferences:
| Name | Type | Purpose | Duration |
|---|---|---|---|
| trueweight-theme | Local storage (preference) | Remembers whether you selected light or dark mode. | Until you clear it or it is removed |
| trueweight-lang | Local storage (preference) | Remembers your preferred language (English / Spanish). | Until you clear it or it is removed |
| trueweight-cookie-consent | Local storage (consent) | Records whether you accepted or rejected non-essential storage, so we do not ask again. | Until you clear it or it is removed |
With your explicit consent, we use third-party tracking pixels and cookies to measure the effectiveness of our advertising campaigns and optimize patient acquisition. These services are provided by:
| Service | Provider | Purpose | Duration | More information |
|---|---|---|---|---|
| Google Ads (gtag.js) | Google Ireland Limited | Measurement of advertising conversions, remarketing, and optimization of Google Ads campaigns. Allows attributing registrations and medical consultations to specific ads. | Up to 90 days | Google's Policy |
| Meta Pixel (Facebook Ads) | Meta Platforms Ireland Limited | Measurement of advertising conversions on Facebook and Instagram, remarketing, and campaign optimization. Allows attributing patient registrations to Meta ads. | Up to 90 days | Meta's Policy |
Important: These pixels are only loaded if you accept advertising and analytics cookies through the consent banner. If you reject consent, these pixels will not be installed and no data will be shared with Google or Meta.
Data collected by these services may include your IP address, browser type, pages visited, interactions with the site, and conversion events (e.g., completing the medical questionnaire or requesting a consultation). This data is used exclusively to measure and improve our advertising campaigns and is not shared with other third parties.
These items are stored only on your device and are not sent to third parties.
Strictly necessary cookies: required for the website to function and to provide the service you requested (for example, session security and authentication in the patient and doctor portals). These do not require consent.
Preference cookies: remember choices such as theme and language. We only store them when you make those choices.
Analytics and marketing cookies: we currently do not use any. If we ever add privacy-friendly analytics (such as Plausible or Umami) or any third-party service, we will update this policy and request your consent before loading them.
When you first visit the website, a banner asks you to accept or reject non-essential storage. You can change your decision at any time by clicking "Cookie settings" in the footer of the site, which will reopen the banner.
You can also delete or block cookies and local storage from your browser settings (see the help section of Chrome, Firefox, Safari or Edge). Please note that blocking strictly necessary storage may prevent some parts of the site from working correctly.
We may update this Cookie Policy from time to time. The current version will always be published on this page with its last-updated date.
If you have any questions about our use of cookies, contact us at doctor@trueweight.eu.