Public Health definition: Public health surveillance is the ongoing systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice, closely integrated with the timely dissemination of these data to those who need to know. It is a system for organized and quick collection, analysis, and distribution of medical information to instigate rapid action.

This presentation discusses the ongoing brain drain crisis in the healthcare sector, focusing on Nigeria. Qualified clinical professionals like doctors, nurses, and pharmacists are well known to emigrate from developing countries to developed nations to practice. However, there is an alarming increase in this trend. The degree of brain drain among the health workforce has assumed frightening dimensions in Africa and, more notably, Nigeria. As a result of the brain drain issue, it is extremely difficult to meet the demand for labor in the healthcare industry and the greater economy of the sending countries. The topic of brain drain in Nigeria is not unique to one industry; however, the healthcare sector has experienced a significant loss. This presentation provides a background on the problem, its effects, and its consequences. It also gives specific recommendations to help minimize the flow.

People worldwide are living longer. Today most people can expect to live into their sixties and beyond. Every country in the world is experiencing growth in both the size and the proportion of older persons. By 2030, 1 in 6 people worldwide will be 60 years or over. The share of the population aged 60 years and over will increase from 1 billion in 2020 to 1.4 billion. By 2050, the world's population of people aged 60 years and older will double (2.1 billion). The number of persons aged 80 years or older is expected to triple between 2020 and 2050 to reach 426 million. While this shift in the distribution of a country's population towards older ages – known as population aging – started in high-income countries (for example, in Japan, 30% of the population is already over 60 years old), it is now low- and middle-income countries that are experiencing the greatest change. By 205the 0, two-thirds of the world's population over 60 years will live in low- and aging-income countries. In Brazil, the population is getting older. Data released on 22/07/2022 at 10:00 am by the Brazilian Institute of Geography and Statistics (IBGE) show that, in 2021, Brazil had more than 10% of its population formed by elderly people aged 65 or over the deity. According to the survey, last year (2021), the Brazilian population was estimated at 212.5 million people. Of these, 21.6 million were aged 65 or over, representing 10.2%.

Babies’ brains are ready to absorb information when they are born. However, babies may comprehend some concepts about items and their connections to one another. They can touch, feel, watch, listen, and feels everything. This enables them to understand their older; they may discover that mixing yellow and blue paint produces green. Children learn through exploring and experimenting. This is the way they improve their cognitive abilities. Human brain development is extremely fast between the ages of 20 and 36 weeks and proceeds until 20 months. The brain includes all the neurons required for life at birth. Of course, if the baby is brought to term, an infant's brain is 25% of its adult weight at birth. The brain would be 75 % of its body weight by age 2 (90 percent by age 6). Children will go through various phases of cognitive growth between birth and the age of two, such as sensory growth and learning ability. Children naturally choose the meals they like the most, so the difficulty is to make healthy options enticing. Of course, no issue how excellent our motives are; convincing your eight-year-old that an apple is as sweet as a biscuit is going to be tough. Therefore, you might ensure that your child's food is as healthy and wholesome as possible while letting them enjoy a few of their preferred delights. Development.

Obesity is a significant issue for public health that is linked to a variety of chronic ailments, including cancer. Prostate cancer is the most frequent disease in men, and there is growing evidence that obesity might impact prostate cancer risk and prognosis. This article reviews the present body of scientific knowledge on the link between obesity and prostate cancer, emphasizing the involvement of metabolic syndromes. It examines the evidence indicating a direct relationship between obesity and prostate cancer risk and the likely processes behind this link, such as alterations in hormonal, immune-modulatory, and metabolic pathways. Furthermore, it investigates the influence of metabolic disorders, including insulin resistance and metabolic syndrome.