Hubungan Lama Pemakaian Lama Kontrasepsi Suntik 3 Bulan Dengan Perubahan Berat Badan Di Puskesmas Ranomuut Manado

. Family planning is a basic prominent preventive health service as well as a mortality prevention. Family planning can be going on through the use of contraception. 3 months injection contraception is a sort of liquid which is injected into woman\u27s body intramuscularly (once in 3 months). This research was aimed to find out the association between the USAge of 3 months injection contraception duration and the mother\u27s weight changing at Ranomout Public Health Center, Manado.The Method of Research was an analytic observational using a cross sectional design. The research was conducted on December 2015 –January 2016 at Ranomuut Public Health Center, Manado. The samples of the research covers a group which consist of 42 mothers who use 3 months injection contraception. Sampling process used was a purposive sampling method. The research used questionnaires and scales as the instruments. Data analysis was done by using chi-square test in the 95% significant level (α ≤ 0,05) results in ρ=0,004, which was less than α=0,05. Conclusion :There is a association between the USAge of 3 months injection contraception duration and the mother\u27s weight changing at Ranomuut Public Health Center, Manado. It is suggested for mothers to look for information about the contrateption used in order to maintain an ideal weight