Sources of nitrates
Nitrates are found naturally in soil, water, and plants. They are also added to fertilizers, food preservatives, and explosives. Some common sources of nitrates include:
* Vegetables, especially leafy greens
* Cured meats, such as bacon, sausage, and ham
* Processed meats, such as hot dogs,午餐肉, and pepperoni
* Fertilizer
* Manure
* Sewage
* Industrial wastewater
Health effects of nitrates
Nitrates can be harmful to human health if ingested in large amounts. The most common health effect of nitrate poisoning is methemoglobinemia, a condition in which the blood's ability to carry oxygen is reduced. Methemoglobinemia can be fatal if not treated promptly.
Other health effects of nitrate poisoning include:
* Gastrointestinal problems, such as nausea, vomiting, and diarrhea
* Headaches
* Dizziness
* Confusion
* Seizures
* Coma
Nitrite toxicity
Nitrates can be converted to nitrites in the body. Nitrites can also be harmful to human health, especially for infants and young children. Nitrite poisoning can cause a condition called blue baby syndrome, which is characterized by a bluish discoloration of the skin. Blue baby syndrome can be fatal if not treated promptly.
Recommended nitrate intake
The recommended daily intake of nitrate is 3.7 mg/kg of body weight. This means that a 150-pound person should consume no more than 250 mg of nitrate per day.
How to reduce nitrate intake
There are several things you can do to reduce your nitrate intake, including:
* Eat a diet rich in fruits, vegetables, and whole grains.
* Choose fresh fruits and vegetables over processed foods.
* Limit your intake of cured and processed meats.
* Avoid using fertilizers that contain nitrates.
* Keep your drinking water free of nitrates.
If you are concerned about your nitrate intake, talk to your doctor.
