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Although global population increase is slowing down generally, in some areas population will continue to rise much beyond 2025 and even into the next century. As population rises, more people reside in cities than in rural regions; this difference is expected to widen. Along with urbanization, dietary patterns have changed and it has greatly affected food systems. The world population is getting older overall. In low-income nations, where the process usually starts earlier and is becoming increasingly noticeable in rural areas, ageing is also fast accelerating. The agricultural labour force and the socioeconomic fabric of rural communities will suffer greatly from urbanisation and ageing. Charting sustainable development paths that can guarantee food security for all calls on consideration these demographic trends. Though global population increase is slowing down, Asia and Africa will still see significant population increase. FAO has always taken into account, in its forecasts, not only population in absolute numbers but also population dynamics, which includes diversity in regional trends, structure by age groups, and location (rural and urban), as a fundamental driver of changes in demand for food and agricultural goods. Known as the low, medium, and high versions, the United Nations Population Division has projected population growth in three distinct ways. Figure. 

Shows the expected patterns for every one of these three 

Possibilities as well as the previous development. The medium variety will be the key reference in the next study.Although urbanization is now also somewhat common in low-income nations, the overall picture hides significant regional variations. The most urbanized developing area historically has been Latin America. Especially South America, urbanized early and quickly. More than two-thirds of the population in the region was categorized as urban by 1980; this percentage grew to around 85 percent in 2015. While low-urbanized areas may urbanize quicker in the future, its great degree of urbanization indicates that urbanization rates will drop and future growth will remain modest. Urbanisation influences eating habits. Higher urban wealth usually drives demand for processed meals, animal-source food, fruits and vegetables, as part of a general dietary change. Higher urban salaries also tend to increase the opportunity costs of cooking and favor food products with a lot of labor inherent in them, such fast food, store-bought convenience foods and foods made and sold by street vendors. These developments are altering the nutrient makeup of meals. Usually, diets are more energy-dense and include more in salt, fat, and sugar. This change in consumption habits also translates into a change in employment within the food system: less people work in agriculture and more in transportation, wholesaling, retailing, food processing and vending (Cohen and Garrett, 2009). Additionally accelerating among rural communities is aging. Little is known about how climate change would affect these systems, which increases uncertainty regarding future income increase. Likewise, it is difficult to anticipate worldwide income growth with any degree of precision regarding policy responses, institutional and political developments. Making long-term economic forecasts makes logical to use scenarios reflecting different assumptions about how these elements could change. structure. ast to ascend

The world is probably going to be demographically older in the 

Next decades in addition to more populated and metropolitan. This isn't a fresh trend. From 1950 to 2015, the proportion of senior  persons climbed from percent to percent while the share of children under five dropped from 13.4 percent to  percent. This evolution is supposed to pick speed. While the percentage of elderly people is forec, the ratio of young children could drop to 5.8 percent by the end of the century.Aging in wealthy nations was seen for decades as a "success story." Thanks to better diet, public health programs, and medical discoveries producing consistently rising life expectancies, people were and are living longer and usually healthier lives. Large and healthy labor force of societies has helped to support a small dependant population, pension and health care for elderly people, and education for the young, therefore supporting revenue growth. These patterns might now be shifting. As one ages, social security systems become unsustainable, economic growth potential of the country slows down, and health-care loads rise. Most rich countries have had decades to adapt to these shifts in their age structures. For instance, it took more than a century for the population of France aged 65 and above to rise from  to  percent of all the population. Many low-income nations, on the other hand, are seeing far more fast rise in the number and percentage of elderly people—often without enjoying the same demographic benefits as slowly aging high-income ones. Many low-income nations might not be able to match the income levels of high-income nations during the next foreseeable future. Perhaps they will "grow old before they can grow rich".

In rural places ageing often starts earlier and proceeds quicker 

Than national averages would suggest. Major effects of rural aging include on the composition of the rural labor force, patterns of agricultural output, land ownership, social structure in rural communities, and overall socioeconomic growth. Older farmers typically suffer more from environmental deterioration, climate change, and limited agricultural technologies than their younger, healthier, better-educated colleagues. Discrimination against elderly rural people in access to loans, training, and other income-generating resources could aggravate the challenges older farmers experience. Many times, agricultural innovations—such as the spread of new agricultural technologies and the introduction of improved seeds and tools avoid older farmers since many lack the financial means to purchase extra inputs, nor the skills  literacy) nor the energy to commit in using new practices. Older women especially suffer when gender divisions in agricultural output restrict their chances to get loans and training, or engage in market transactions. Adapting farming technologies and agricultural policies to the capacities and requirements of older farmers could help to keep older people involved in productive activities in nations where the agricultural labor force is ageing (Anriquez & Stloukal, 2008). In locations suffering "compressed ageing," the provision of social services could entail the adaption of social support systems to fit the new age.Economic systems' paths depend on a variety of elements, including population dynamics, technical progress, resource availability and productivity, and producer and consumer behavior.