Pattern of alcohol consumption is observed into the life of some seminarians in the Formation Houses in Nairobi County Kenya. The study investigatesthe relationship between seminarians' consumption of alcohol and their psycho-spiritual wellbeing in Nairobi County, Kenya. There is only a single objective that directs this study project: The objectiveof the research are anchored on two theories namely: Nature and Nurture theory by Francis Galton (1874) and Disease theory of Alcoholism by Morten Jellinek (1960). It focuses on the strain of demanding training and the effects of substance usage on spiritual development. Data for the study was gathered using a correlational design. The target population is 128 seminarians from five different selected religious formation houses of different congregations. The researcher has used the stratified random sampling method by using the Slovin Formula of 97 seminarians as the sample size. The researcher has adopted standardized questionnaires (AUDIT and P-SWBS) to collect quantitative data and interview grid to collect qualitative data. The quantitative data, primarily collected through structured questionnaires, is analysed using statistical methods to identify patterns, relationships, and trends. After the collection of structured questionnaires, the responses are entered into a statistical software package IBM SPSS Statistics. The finding indicates that as alcohol consumption increases, psycho-spiritual wellbeing tends to decrease. In other words, seminarians who consume more alcohol are likely to report lower levels of spiritual and psychological wellness. Thus, finding invites the seminarians to be vigilant, to think twice before they consume alcohol. Because alcohol can lead seminarians to physical, spiritual, psychological and interpersonal sickness.