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Yeşilay

Yeşilay, also known as the Green Crescent, is a Turkish non-profit organisation focused on preventing addiction and reducing the harms associated with tobacco, alcohol, drugs and other harmful habits.

Last updated August 24, 2026

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Overview

Yeşilay, known in English as the Green Crescent, is a Turkish non-profit organisation dedicated to preventing addiction and protecting public health. Its work addresses smoking, alcohol use, drug use and other harmful or dependency-forming habits. The organisation presents prevention, public education, support and protective services as complementary parts of its mission, with particular attention to children and young people as well as citizens affected by harmful habits. The organisation was established in Istanbul on 5 March 1920. Its creation placed Yeşilay within a period when Turkish public and civic institutions were increasingly concerned with the social and health consequences of harmful consumption. Rather than functioning as a commercial producer or retailer, Yeşilay developed as a public-interest association whose identity is closely linked to advocacy, awareness-building and community support. Yeşilay’s principal areas of concern have expanded beyond a narrow anti-smoking remit. The organisation works against tobacco, alcohol and drug addiction and is also associated with broader addiction-prevention activity. Its approach includes informing the public about risks, encouraging healthy and substance-free lifestyles, supporting affected people and promoting methods intended to protect individuals from harmful habits. Young people are a particularly important audience because prevention efforts often focus on reducing exposure and vulnerability before addictive behaviours become established. The organisation also operates within an international policy and civil-society network. According to reference material describing its international memberships, Yeşilay has participated in the governing structures of Europe Against Drugs and the European Alcohol Policy Alliance, and has been associated with the International Society for the Study of Drug Policy and the International Drug Policy Consortium. It has also held special consultative status with the United Nations Economic and Social Council and participated in the Vienna NGO Committee, a civil-society network connected with the United Nations Office on Drugs and Crime. Other stated international relationships include health-policy activity connected with the Organisation of Islamic Cooperation, the Federation of Islamic Medical Associations and the International Silk Road Medical Research Center. Yeşilay’s international ambition includes bringing national Green Crescent organisations together through a proposed World Green Crescents Federation based in Istanbul. This initiative reflects an effort to extend the organisation’s model beyond Turkey while retaining a common identity around addiction prevention and public health. The organisation is therefore best understood as a civil-society and public-health brand rather than a conventional consumer brand. Its reputation rests on prevention campaigns, educational work, policy engagement, international cooperation and services for people affected by addiction. Publicly available reference material confirms its founding date, mission and international affiliations, but does not provide enough information here to document current leadership, detailed programme names, budgets or a complete chronology of its activities.

History

Yeşilay, or the Green Crescent, was established in Istanbul on 5 March 1920 as a non-profit organisation concerned with harmful habits and their consequences for society. Its historical role has been to combine public education and prevention with services intended to protect citizens and assist people affected by addiction. The organisation’s stated focus includes smoking, alcohol and drug use, while its broader mission covers other harmful or dependency-forming behaviours. From its Turkish base, Yeşilay developed an identity centred on public health rather than commerce. It does not represent a product manufacturer or retail chain; instead, its activities are associated with awareness, advocacy, education and support. Children and young people are especially important to its prevention mission, reflecting the emphasis placed on early protection from addictive behaviours and harmful environments. The organisation has also developed an international profile through participation in addiction-policy and public-health networks. Reference material identifies Yeşilay as a member of, or participant in, organisations and forums including Europe Against Drugs, the European Alcohol Policy Alliance, the International Society for the Study of Drug Policy, the International Drug Policy Consortium, the Vienna NGO Committee and networks connected with the United Nations Office on Drugs and Crime. It has also been granted special consultative status with the United Nations Economic and Social Council. Additional relationships have included health-policy initiatives connected with the Organisation of Islamic Cooperation, the Federation of Islamic Medical Associations and the International Silk Road Medical Research Center. An initiative to bring national Green Crescent organisations together under a World Green Crescents Federation headquartered in Istanbul represents the organisation’s internationalising direction. The available reference material does not specify the date on which this initiative was completed, nor does it provide a full account of later organisational developments. It also does not establish a complete list of chairs, directors, programmes, campaigns or service locations. Accordingly, the documented history supports Yeşilay’s founding, mission and international affiliations, but not a more detailed institutional chronology.

  • 2015

    International memberships documented

    [1]

    Reference material records Yeşilay’s participation in several international addiction-policy, public-health and civil-society organisations, including EURAD, EUROCARE, ISSDP, IDPC and UN-linked forums.

  • 1920

    Yeşilay is established in Istanbul

    [1]

    The organisation is founded on 5 March 1920 as a Turkish non-profit association addressing harmful habits and their effects on society.

Products and positioning

A Turkish non-profit public-health and civil-society organisation focused on addiction prevention, healthy living, public education and support for people affected by harmful habits.

  • Public-health education

    Addiction-prevention education

    Educational activity intended to explain the risks of smoking, alcohol, drug use and other harmful habits. The available material identifies prevention and protection, especially for young people, as central parts of Yeşilay’s mission, but does not provide enough detail to name specific curricula or programme formats.

  • Addiction support

    Support and protection services

    Non-commercial services and protective methods for citizens affected by harmful habits or addiction. These activities complement public awareness work, although the supplied sources do not specify individual service names, facilities or treatment models.

Brand decisions

  • International federation initiativeStrategy

    Background

    Yeşilay sought to bring national Green Crescent organisations from different countries together within a common international structure.

    Action taken

    An initiative was undertaken to establish the World Green Crescents Federation in Istanbul.

    Aftermath

    The supplied reference material does not establish whether the initiative was completed or provide a subsequent organisational outcome.

Sources2 sources

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