What Is a Prophylactic?

Chemopreventive agents refer to chemical substances that can be used to prevent the occurrence of certain diseases (including cancer) in humans. They can also refer to chemical pesticides that prevent animal and plant diseases and pests.

Chemicals used by humans to prevent certain diseases, including cancer, to improve their ability to fight disease. Chemical agents used in the prevention and control of animal and plant diseases and insect pests are also called chemopreventive agents, which mainly refer to pesticides.

1. Use aspirin to prevent heart disease, stroke and possible tumors;

2. Postmenopausal women use estrogen to prevent osteoporosis and heart disease;

3. Tamoxifen (Tamoxifen) is used for chemoprevention of breast cancer in women;

4. Vitamins are used for the prevention of tumors.

5. Polyphenol antioxidant is an antioxidant, which is characterized by the effects of a variety of phenols. More than 4,000 different polyphenol antioxidants can resist oxidative stress that causes neurodegenerative diseases and some cardiovascular diseases.

The main source of polyphenol antioxidants is available for ingestion and can be found in plant nutrition vegetarian foods. For example, most pods, fruits such as apples, blackberries, cantaloupe, cherries, cranberries, grapes, pears, cloth, raspberries and strawberries, and vegetables such as green broccoli, cabbage, celery, onion and parsley are abundant Polyphenol antioxidant. Red wine, chocolate, green tea, olive oil, bee pollen, and various grains are other sources. The main benefit of ingesting polyphenol antioxidants is equivalent to ingesting many different phytonutrients.

Insecticides are pesticides that are applied to insects and are often used in agriculture, medicine, industry, and home environments. Insecticides can target insects at all stages of development, including egg and larvicides.

Before 2500 BC, humans started using pesticides to prevent crop damage. Early pesticide applications were elemental sulfur sprayed in Sumeria about 4,500 years ago. In the 15th century, toxic chemicals such as arsenic, mercury, and lead were used on crops to kill pests. In the 17th century, nicotine and sulfates were extracted from tobacco and used as pesticides. In the 19th century, two more natural pesticides were introduced, pyrethrum and reoenone. ^[1]

The use of pesticides is considered to be one of the main reasons for the rise in agricultural productivity in the twentieth century. In the twentieth century, with the rapid development of agriculture, pesticides have greatly increased agricultural production. However, almost all pesticides can severely alter the ecosystem, most of which are harmful to the human body, and others are concentrated in the food chain.