April 7 of each year marks the celebration of World Health Day. From its inception at the First Health Assembly in 1948 and since taking effect in 1950, the celebration has aimed to create awareness of a specific health theme to highlight a priority area of concern for the World Health Organization.
Over the past 50 years, this has brought to light important health issues such as mental health, maternal and child care, and climate change. The celebration is marked by activities that extend beyond the day itself and serves as an opportunity to focus worldwide attention on these important aspects of global health.

World Health Organization celebrates global health day every year on 7th April worldwide to create awareness on the benefits of being healthy. On this day numerous programs and arrangements are curated by the World Health Organisation. World Health Day was the first time celebrated worldwide in the year 1950. It is universal: “Health is Wealth”. It is the utmost important aspect of our existence which can’t be denied. We all know various types of diseases prevail in the environment due to which people suffer.
It is necessary to spread awareness among people and to impart knowledge about health.

The WHO estimates that 12.6 million people died as a result of living or working in an unhealthy environment in 2012 – this accounts for nearly 1 in 4 of total global deaths. Environmental risk factors, such as air, water and soil pollution, chemical exposures, climate change, and ultraviolet radiation, contribute to more than 100 diseases and injuries. This can result in a number of pollution-related diseases.


- 2018 (30 October – 1 November): WHO's a first global conference on air pollution and health organized in collaboration with UN Environment, World Meteorological Organization (WMO), and the secretariat of the UN Framework Convention on Climate Change (UNFCCC).

The WHO works to improve nutrition, food safety, and food security and to ensure this has a positive effect on public health and sustainable development.
In April 2019, the WHO released new recommendations stating that children between the ages of two and five should spend no more than one hour per day engaging in sedentary behavior in front of a screen and that children under two should not be permitted any sedentary screen time.
It also tries to prevent or reduce risk factors for "health conditions associated with the use of tobacco, alcohol, drugs and other psychoactive substances, unhealthy diets and physical inactivity and unsafe sex".

Each year, the organization marks World Health Day and other observances focusing on a specific health promotion topic. World Health Day falls on 7 April each year, timed to match the anniversary of WHO's founding.