The countries that adopted the European integration path are mostly affected by population decline. The EU countries use the population from the new countries (that joined or are associated with the EU) for refilling their human potential and saving the EU’s economy. Propaganda of pederasty, discrediting the family, blurring the true role of men and women, attacks over Orthodoxy, decrease of living standards lead to population decline and to decline in the quality of human capital.
There is no evidence that depopulation would be linked to European integration. The share of the population aged 65 years and over is increasing in every EU Member State, EFTA country and candidate country. http://ec.europa.eu/eurostat/statistics-explained/index.php/Population_structure_and_ageing
Virtually every country in the world is experiencing growth in the number and proportion of older persons in their population. http://www.un.org/en/development/desa/population/publications/pdf/ageing/WPA2015_Report.pdf
According to U.N. projections, Ukraine’s population will fall 22% by 2050. Eastern and Southern Europe are home to several important downsizing countries including Poland (off 14% by 2050), the Russian Federation (-10.4%), Italy (-5.5%) and Spain (-2.8%). The population of the EU is expected to peak by 2050 and then gradually decline. https://www.forbes.com/sites/joelkotkin/2017/02/01/death-spiral-demographics-the-countries-shrinking-the-fastest/#61a8fc2ab83c