What is organic food-green and ecological food?

Organic food refers to safe and environmentally friendly ecological food that does not use chemical pesticides, fertilizers, chemical preservatives and additives in production and processing, and does not use genetically engineered organisms and their products as raw materials.

In the production and processing of organic food, it is absolutely forbidden to use synthetic substances such as pesticides, fertilizers and hormones, and genetic engineering technology is not allowed. Other foods allow limited use of these substances, and genetic engineering technology has not been banned. For example, there is no regulation on the use of genetic engineering technology and radiation technology in green food.

Organic food has strict regulations on land production and transformation. Considering that some substances will remain in the environment for a long time, it takes two to three years to produce organic food in the land where other foods are produced, but there is no requirement for producing green food and pollution-free food.

In the process of organic food production, strict control of quantity requires a fixed plot and a fixed output. There are no such strict requirements for the preparation of other foods.

Therefore, it can be said that organic food is truly safe, environmentally friendly and ecological, with natural sources, rich nutrition and high quality.

1. Is genetically modified food harmful to health?

In the past 100 years, traditional breeding technology has provided many high-yield and high-quality cereals, fruits and meat, poultry, eggs and milk for human beings, but it has not carried out gene exchange between distant species, let alone hybridization between plants and animals, and between higher organisms and microorganisms. Genetic engineering is a kind of hybridization that breaks through the natural interspecific barrier, so that human genes may be implanted into bacteria, and cattle genes may enter potatoes or tomatoes. The emergence of genetically modified food is undoubtedly a great achievement of human conquest of nature. So will these unnatural foods do harm to human beings? Do you dare to eat genetically modified food?

Although applying transgenic technology to food production or manufacturing has many benefits, it is still necessary to analyze the expected and unexpected effects of transgenic technology when evaluating the safety of food. Because genetically modified food is different from traditional food from the same biological source, the change of genetic traits may affect the composition of protein in cells, which may lead to the change of component concentration or the production of new metabolites, which may lead to the production of toxic substances or cause allergic symptoms in people. Some people even suspect that genes will be transferred in the human body, resulting in unimaginable consequences. Scientific research shows that the potential hazards of genetically modified foods include: the production of new toxins and allergens in food; Other harmful health effects caused by unnatural foods; Chemicals used in crops increase the pollution of water and food; Will produce herbicide-resistant weeds; The spread of diseases transcends species barriers; Loss of crop biodiversity; The destruction of ecological balance.

For example, it has been found that a genetically modified soybean can cause severe allergic reactions; Tryptophan, a food additive produced by genetically engineered bacteria, has killed 37 people and disabled more than 1500 people. Recently, it was found that the milk of many supermarkets in the United States contains genetically modified bovine growth hormone, which has been used in pasture. Tomatoes produced by a famous genetic engineering company are storable and easy to transport, but they contain antibiotic-resistant genes, which can remain in the human body. Man-made characteristics and inevitable imperfections will be passed down from generation to generation, affecting other related and unrelated creatures. They will never be restored or controlled, and the consequences are incalculable at present. Therefore, we also need to be cautious about genetically modified foods.

2. The cultivation of genetically modified crops and environmental problems A report published by the British government pointed out that the cultivation of genetically modified crops may have an impact on the environment. According to the report, herbicides are more widely used in genetically modified crops developed by biotechnology than ordinary crops, and although some herbicides will not harm crops, while species diversity is threatened, the number of insects will also decrease, and the destruction of food chain will endanger the survival of wild animals. This shows that transgenic crops, as a new form of new breeding, are still flawed in a certain sense and may cause harm to the environment, mainly in the following aspects:

(1) toxicity. Due to the lack of extensive epidemiological investigation, there is no evidence that genetically modified crops are toxic to human beings. Genetically modified crops may be toxic to wildlife, especially those with insect resistance.

(2) The development of "super pests". Crossbreeding of transgenic crops with nearby weeds can transfer herbicide resistance or other beneficial traits to weeds. In addition, there is an obvious threat that weeds or insects may develop resistance to some pesticides through evolution. Although this phenomenon may affect traditional and transgenic crop varieties, when transgenic crops rely more on a single gene or herbicide, the evolutionary pressure to develop resistance is enormous.

(3) single species. Although some studies show that genetically modified crops will not significantly reduce biodiversity, some opponents worry that genetically modified crops may lead to variety simplification: fewer varieties of crops are planted. At present, two-thirds of agricultural products come from only three domesticated crop varieties: rice, wheat and corn. Traditionally, farmers control certain insects through seasonal rotation. The use of insect-resistant transgenic crops may reduce this practice and increase monoculture, which may not only pose a long-term threat to food security, but also affect the food chain between some species and crops. Therefore, the danger of this ecological imbalance still exists.

3. Three reasons why environmentalists are vegetarian. The first reason is that vegetarianism is for environmental protection.

The United Nations Environment Programme issued a report, which warned that although the food crisis has temporarily faded out of people's sight, if the environment continues to deteriorate, people still cannot develop agriculture in an environmentally friendly way, and the world may face a more serious food crisis in the future. According to the report, more than 1/3 of the world's grain is used as livestock feed. If this trend continues, with the continuous growth of livestock, this proportion will rise to 50% by 2050, thus further aggravating the food crisis. It takes about 10 kg of grain and 65438+ million liters of water to produce one kilogram of beef. If we don't change our way of life, we will soon face the global economic collapse-not because of the financial crisis, but because of the water crisis. But in order to eat meat, people use nearly 70% water to feed economic animals. Moreover, a large number of economic animals will release methane gas, which is also one of the chief culprits of the greenhouse effect. From this point of view, eating meat not only wastes energy, but also destroys the environment, and bears unshirkable responsibility for world famine and unstable factors. Why can't this arouse people's deep thinking?

The second reason: vegetarianism is out of the need of good health.

Each of us has the need to keep healthy. So what kind of food is the healthiest? Vegetarian!

Eating meat not only destroys the ecological balance of the earth, but also harms human health! Why do you say that? According to data, 47% of China people's death rate is caused by improper diet. This is positively related to the sharp decline in cereal intake and the sharp increase in animal food intake in recent years. The book "China Health Survey Report" mentions that the scientific evidence is conclusive and the research conclusion is shocking: excessive intake of animal protein, especially casein, which accounts for 87% of milk protein, can significantly increase the incidence of cancer, heart disease, diabetes, multiple sclerosis, kidney calculi, osteoporosis, hypertension, cataract and Alzheimer's disease. What is even more shocking is that these diseases can be controlled and treated by adjusting diet. Professor Campbell has a very clear point in his book: a diet based on animal food will lead to chronic diseases (such as obesity, coronary heart disease, tumor, osteoporosis, etc. ); A plant-based diet is most beneficial to health and can effectively prevent and control chronic diseases. Generally speaking, eat more whole grains, vegetables and fruits, and eat less chicken, duck, fish, meat, eggs and milk.

The third reason for being a vegetarian: out of love and respect for life.

Only by respecting the lives of others can our own lives be respected.

Respect for life is the most basic principle of this planet and even the universe, because life is the most precious of all living things. Therefore, if a planet wants to evolve, it must first kill life and respect the equal right to life endowed by nature. Otherwise, the so-called civilization may become an excuse to kill more lives and even destroy the earth unconsciously. On this earth, while people enjoy their own lives, they are also mercilessly depriving other lives. In this civilized era, the fate of animals is the most uncivilized. In order to satisfy their own desires, people in this era not only invaded the living space of animals and made many species extinct, but also began to raise livestock on a large scale, not to make them survive better, but to eat their meat.

Moreover, now human beings can live a better and healthier life by relying on grain and plant protein substitutes. Meat greatly shortens human life and always harms people's health. Animal husbandry for meat is an important cause of global warming. When all kinds of disasters and crises are approaching, human beings should reflect on their way of treating animals. Only by changing the way of eating and advocating vegetarianism can we build a harmonious green home.