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Sexuality Observer is a Blog featuring stories about sexual health and sexual rights that are changing the world. 



Antón Castellanos Usigli (Photo by: Andrés Oyuela)

The Author:

Antón Castellanos-Usigli, MPH, is a public health professional, consultant, advocate and blogger committed to global sexual health and sexual rights. He started promoting sex education in Cuernavaca, Mexico, where he organized the first sex education Conference at just 19 years of age. In 2011, he founded the Youth Initiative at the World Association for Sexual Health (WAS). Antón is a Member of the Global Advisory Board (GAB) on Sexual Health and Wellbeing, a group of global experts brought together by Durex (the no. 1 condom brand in the world) to advance the links between sexual health, sexual rights and sexual pleasure across policies and programs.

As a consultant, he has worked for the Northern Manhattan Perinatal Partnership (NMPP), for RNW Media, the International Planned Parenthood Federation (IPPF) and the United Nations Population Fund (UNFPA). In the past, he also worked for the Mexican Federation of Sexuality Education & Sexology in Mexico City and for the Western Pacific Regional Office of the World Health Organization (WHO) in Manila, Philippines. Currently, Antón is the Manager of an HIV/STIs prevention program at Wyckoff Heights Medical Center in Brooklyn, New York, focused on Hispanic men who have sex with men and women. Since 2018 he is also a Member of the HIV Planning Group at the NYC Department of Health. 

He has a Masters of Public Health from Columbia University in New York City and he has been a speaker in Congresses across eleven countries. Antón is the co-author of “Fulfil! Guidance Document for the Implementation of Young People’s Sexual Rights (IPPF-WAS, 2016)” and writes the Blog Sexuality Observer.

Read more about Antón