The World Health Organisation says new policies must be introduced in the north Pacific to tackle increasing problems caused by poor diets and physical inactivity.
The WHO is convening a workshop in Guam this week to help countries such as the Marshall Islands reduce and manage growing rates of non-communicable disease.
A WHO survey shows 73 percent of the population in the Federated States of Micronesia aged 25 to 64 is overweight and of that, 42 percent is obese.
A WHO representative from the South Pacific, Dr Chen Ken, says delegates will discuss how to develop national nutrition policies dealing with the marketing of food and non-alcoholic drinks, the consumption of salt and tobacco use.
"Then we hope when we have a policy we'll get support from the governments. At the same time we'll talk about how to take action, different countries -how to do it and how to bring this kind of approach to the public and increasing awareness in the public."
Dr Chen Ken from the WHO.