Breastfeeding is one of the most effective ways to ensure a baby's health and survival, and breast milk is the ideal food for babies. It is recommended to start breastfeeding within the first hour of life, following skin-to-skin contact between the mother and the newborn immediately after birth.

Newborns transition from the dark, narrow and fluid-filled intrauterine environment to the wide, bright, cold and dry extrauterine life during the birth process. Thus, in addition to invasive procedures such as heel lance, vascular access, etc., including the birth process, simple and routine procedures such as separation from its mother in a short time to measure body weight cause stress for the newborn. For this reason, it is recommended that newborns should not be separated from their mothers except for important medical reasons, and that skin-to-skin contact should be initiated as soon as possible after birth so that the newborn can cope with the "birth stress".

Hyperbilirubinemia, as physiological jaundice, usually begins in the first 24-72 hours of life in term newborns. It peaks in the following days and starts to decrease in the following days. Colostrum, which is a natural laxative found in breast milk, facilitates the removal of meconium in the newborn and provides bilirubin excretion with stool. With early skin-to-skin contact between mother and newborn in the first minutes of life after birth; Nurses have a key role in reducing the level of "birth stress" experienced by the newborn and in reducing the severity of hyperbilirubinemia by starting breastfeeding early.

The aim of this study; The aim of this study is to examine the effect of early SSC applied after normal delivery on the newborn's sucking efficiency, postnatal stress and bilirubin levels.

Study hypotheses:

H1: Early skin-to-skin contact applied immediately after normal birth has an effect on the sucking efficiency of the newborn.

H2: Normal doğumdan hemen sonra uygulanan erken erken ten tene temasın yenidoğanın stres düzeyine etkisi vardır.

H3: Early skin-to-skin contact applied immediately after normal delivery has an effect on the newborn's bilirubin level.

Type of the research: The research was conducted in a randomized controlled experimental type. Mothers and newborns who met the inclusion criteria were randomly selected by tossing a coin and assigned to the intervention or control groups. The data were collected by the researcher by face-to-face interview method.

Inclusion Criteria:

For mothers;

• Vaginal delivery planning,
• Be between the ages of 18-45,
• Having a singleton pregnancy
• Having completed the 37th week of gestation,
• Agreeing to participate in the research,
• Absence of breastfeeding barriers [without human T-cell lymphotropic virus (HTLV-1), human Immunodeficiency virus (HIV) and active tuberculosis]
• Absence of any known health problems (such as diabetes, gestational diabetes, hypertension, Preeclampsia, renal failure, cardiac problems, psychiatric disorders)
• There was no ABO and Rh incompatibility. For newborns;
• Absence of conditions that prevent sucking such as frenulum or palate problem,
• Absence of any health problems or congenital diseases,
• Apgar Score ≥ 8
• No need for resuscitation after birth.

Exclusion Criteria:

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