The factors of culture shock are various. Different values, beliefs and customs can create information overload. Besides, language barrier reduces the understanding of the new culture and makes people feel isolated. In addition, the difference in food is one of the main factors of culture shock. Original eating habit is not easy to change, so it becomes more difficult to fit in. Moreover, people from different social structures cause culture shock. Furthermore, the individual differences such as age, sex, socio-economic class and education also influence degree of culture shock.
Culture shock typically occurs in a four-stage process that can unfold over varying lengths of time: the honeymoon, negotiation, adjustment, and mastery phases. In the honeymoon phase, people always feel excited and fascinated about the culture. After that is negotiation phase which is the real culture shock. In this stage, people are struggle in the differences between cultures. When people start to recover, they jump to the next stage, adjustment phase. In the last stage, people will start to embrace the new culture. Different people experience culture shock in different ways and to different degrees, but they all go through the same process of this model.
People in this situation will have both positive and negative effects which influence people psychologically and physically. It causes depression, anxiety and hopelessness and, in turn, it will reduce problem solving skill, inefficiency of work and negative interpersonal relationships. Besides, it also causes physical symptoms like colds and headaches. However, it also brings positive effects such as self-confidence, self-motivation, culture sensitivity and language skills.
Culture shock is a temporary phase. There are various ways to reduce these emotions. Keep in touch with family and friends by making phone calls, using web chat or sharing photos and experience on social networks. Get involved in local activities
Bibliography:  Ashim C. Uwaje, “Culture shock, Re-Integration and Re-Entry culture shock - Managing Cultural Differences” 2009  Furnham, A. and S. Bochner, “Culture Shock: Psychological Reactions to Unfamiliar Environments” London and New York: Methuen & Co Limited, 1986  Grant G. Frost, “A Consideration of How Non-aboriginal Educators Working Among First Nations Populations May Be Particularity Susceptible To the Effects of Culture Shock” Mount Saint Vincent University, September 2007  Manz Sonja, "Culture Shock - Causes, Consequences and Solutions: The International Experience" 2003  Oberg Kalvero, "Cultural Shock: adjustment to new cultural environments" Practical Anthropology, 7, 1960: 177-182  Rachel Irwin, “Culture shock: negotiating feelings in the field” Anthropology Matters Journal, University of Oxford, 2007, Vol 9 (1)  Sheila M. Fabrizio, “Cultural adaptation in outdoor programming” Australian Journal of Outdoor Education, 9(2), 2005: 44-56  Wikipedia: http://en.wikipedia.org/wiki/Culture_shock#Reverse_culture_shock