-
The relationship between the natural environment and health and longevity.
-
Characteristics of environmental pollution:
Extensive range of affected people: the environment is polluted to affect a wide range of people, including people of different ages and genders, and may even affect the fetus;
Diversity of damage effects: The forms of damage to the health of the population show obvious diversity, including direct, indirect, memorable, chronic, etc.;
The complexity of the action of multiple factors: various poisons can produce joint toxic effects, and the routes of entry into the body, individual sensitivities, and clinical manifestations can be different;
Long-term effect of low dose: Many pollutants can remain in the air, soil and water for a long time, and the health damage caused by long-term action on the human body is not easy to detect in a short period of time.
Difficult.
-
Although there are many types of pollutants that affect human health, they have their common characteristics when acting on human health: (1) They have a wide range of targets. The impact of environmental pollution is large, involving a large area and a large population.
2) Long-term low-dose nature. The concentration of pollutants in environmental pollution is low, and the exposed person lives in the polluted environment for 24 hours instead of just 8 hours of work. (3) Diversity of roles.
The types of pollutants in the environment are complex, and they have a variety of different biological effects, so the hazards of pollutants acting on the human body include local and systemic, specific and non-specific, long-term hazards and short-term effects. and (4) the complexity of environmental factors. There is not a single factor in environmental pollution, and it is often a combination of factors that act on the human body at the same time.
5) The long-term nature of the research objectives. The purpose of environmental protection is to protect the health of residents and prolong life expectancy, not only to study toxic or non-toxic, acute poisoning or chronic poisoning, nor to study only the immediate environmental pollution, but also to consider its long-term harm.
-
Environmental factors are indispensable for human survival, and sunlight, rivers, vegetation, soil, climate, etc. constitute a good ecosystem.
important factors. Our life behaviors of breathing, drinking, and eating are realized by communicating with environmental agents and factors.
There are no harmful factors in the environment, and our body will not be exposed to harmful factors, so we will be in a healthy living environment. On the contrary, due to our production and living behaviors, the environment is polluted, and pollutants will inevitably enter our body through drinking water, air, food, etc., causing acute or chronic health damage.
-
The influence of social environment on the human bodyHuman life is always in a certain environment, and the environmental factors mainly include extraterrestrial space information factors and earth environmental factors. The global environment also includes information about the natural environment and the social environment (the most important of which are the living environment and the production environment). People are often under the influence of both material and spiritual psychological factors.
There are many information factors in the universe, some of which are known, and many of which are unknown.
-
The social environment is very important to human health, if the environment is good, the human health is very good, if you live in the noon smoke, dirty smoke miasma environment, the health of the human body is very harmful, the rural environment is better than the city, no car, no factory, the health of the human body is very good. Now many cities are being rebuilt, planting more trees, building more roads, and reducing the pollution of coal mines, which is beneficial to our body.
-
If the environment is good, it can be beneficial, and if the environment is too bad, it is harmful to the body.
-
The environment has an impact on people.
-
In a high-pressure social environment, it is easy to cause various diseases. For example, high blood pressure.
-
There are still better physical factors in the environment that affect health, such as relatively strong ultraviolet rays, which will affect people's physical health and make people get sick.
-
The main thing is the effects and influences in some of the environment, which will combine with each other and then create problems.
-
The air quality and water quality of the environment can be affected.
The intestine is an important immune organ of the human body, and if the intestine is not taken care of, the body's resistance will be greatly reduced, thus endangering health. The human gut is home to a huge number of bacteria, about 100 trillion, 10 times more than human cells. Harmful bacteria produce toxins that are harmful to health. >>>More
Humans have never really lacked salt. Because from unicellular to multicellular to vertebrates to mammals and modern humans, an important instinct of the human body to remain unchanged is to self-regulate salt and water, also known as acid-base balance mechanisms. Practical examples: >>>More
Green plant photosynthesis produces oxygen for people to use, otherwise carbon dioxide would not be able to be processed into usable substances. Eating green plants helps the body absorb various nutrients.
Food **
Foods with high nutritional value include fruits, vegetables, eggs, meat, and other foods. Nutrients need to be taken in a balanced manner, and proper consumption has certain benefits for the growth and development of the human body. >>>More
The human body is composed of more than 80 elements, which can be divided into two categories: macro elements and trace elements according to the content of elements in the human body. All elements that account for more than the total weight of the human body, such as carbon, hydrogen, oxygen, nitrogen, calcium, phosphorus, magnesium, sodium, etc., are called macroelements. All the following elements that account for the total weight of the human body, such as iron, zinc, copper, manganese, chromium, selenium, molybdenum, cobalt, etc., are called trace elements. >>>More