Ivona FoitovaThe Orangutan Health Project (OHP) was the first orangutan research project to investigate special behaviours and ecological conditions necessary to maintain health in wild orangutans. In addition, OHP is the only on-going and long-term orangutan health research project being conducted in the world at this time. This is partly due to the complexity of self-medicating behaviours of the orangutan and the astonishing variety of flora in the rainforest, which also entails geographical and seasonal variations.

There is still a great need for more information to be gathered and for further research to be conducted in order for us to continue learning about orangutan health and how orangutans combat disease.

The primary focus of OHP’s research to-date is investigating and understanding how wild orangutans combat parasitic infections. Parasite infections can and do affect everything from health to reproduction and fertility, and ultimately survival. Understanding preventive and curative methods in wild orangutans will aid rehabilitation programs in the future to teach possible reintroduced orangutans health practices similar to those of wild orangutan populations in surrounding areas, thus enabling a higher chance of survival once reintroduced orangutans are on their own in the forest.

Due to the rapid decline of rainforest trees and plants each year, OHP aims to facilitate rainforest preservation by bringing to light the enormity of the importance of Indonesian rainforests through information obtained through our research regarding the healing properties of plants found only in the rainforests. The use or consumption of these plants is not limited to wild orangutans, but also applies to captive orangutans. Perhaps, eventually, some of these same plants can be used in natural and pharmaceutical medicines to treat human ailment.

The Orangutan Health Project is led by Ivona Foitova, a Veterinary Doctor from the Czech Republic with an additional PhD in Wildlife Disease.

OHP is sponsored by the "UMI-Saving of Pongidae" Foundation (UMI), established in 1994 in the Czech Republic in order to:

  • Protect the Great Apes
  • Study and learn about their lives in captivity and in their natural habitat
  • Conserve their natural habitat
  • Improve breeding in captivity
  • Create conditions for successful breeding and study of the Great Apes in the Czech Republic

UMI chose to allocate the majority of its resources to OHP due to the fact that OHP’s research has the potential to help both wild captive orangutans. UMI works closely with Gadjah Mada University (GMU) in Yogyakarta, Indonesia and its Faculty of Veterinary Sciences.

Co-operation with local scientists and researchers is critical to the success of OHP, and OHP calls on the expertise (local forests, plant identification, known medicinal properties for humans, etc.) of local people as much as possible.


  • Research
  • Conservation
  • Education


  • A broader knowledge of orangutan health maintenance with an emphasis on parasite/host interactions, which will have useful applications for effective rehabilitation, conservation, and successful preservation of the species.
  • Improved understanding of one of mankind's closest relatives, the human & non-human primate relationship, and most importantly, the health risks orangutans face associated with co-existence. Combating communicable diseases in wild orangutans becomes more urgent as habitable forests for orangutans and orangutan populations continue to decline at an alarming rate.
  • OHP’s data will facilitate improved health of captive orangutans in zoos and rehabilitation centres, potentially discovering new methods of controlling parasite infections.
  • We will expand the knowledge base of medicinal plants, and discoveries of previously unknown medicinal properties will emphasise the importance of conserving rainforest habitat.
  • New avenues will be opened up for investigation in the field of human medicine.


Based on the preliminary results from an OHP study of wild orangutans in Sumatra, a feeding trial on captive orangutans was conducted at Singapore Zoo in 2001. The level of parasites was greatly reduced after changing their diet for six months (Foitova et al., 2002) and Singapore Zoo subsequently revised its orangutan diet on the basis of this trial.

Mina with baby
Mina with baby
Orangutan detail
Orangutan detail
Wild male
Wild male