What is the long-term impact of preservatives on health?
This discussion will explore the impact of preservatives on long-term health. This is a topic I am frequently asked about as a nutritionist and dietitian. It's important to know the impact of these substances on our health and our diet.
Understanding food preservatives is important
In our modern food systems, preservatives are essential. These preservatives help to extend shelf-life and stop the growth of molds, bacteria and yeast. Some research has shown that large doses of certain preservatives can have harmful effects when they are consumed over time. Studies have shown that foods high in sodium, nitrites or nitrates - common preservatives found in processed meats - increase the risk of certain cancers and heart diseases.
Important Points To Note
Not all preservatives can be harmful. Since centuries, salt and vinegar are used to preserve foods without harmful health effects. Many synthetic preservatives, such as sulphites and benzoates are added to processed food. Some of these preservatives can cause allergies in people, and they have also been linked to conditions such as migraines and asthma. A study in Nature suggests that food additives like emulsifiers can alter the gut bacteria, leading to obesity and inflammation.
Example of how food preservatives affect long-term health
- Studies have shown that excessive consumption of sodium Nitrite can lead to cancer and heart disease.
- BHA and BHT: Antioxidants that prevent oil in food from becoming rancid and oxidizing. Several animal studies have suggested that they could be cancerous.
- Sulphites are found in wine and dried fruit and can trigger allergic reactions, such as skin rash and asthma attacks.
- This unhealthy fat, while not a preserver, is commonly found in foods processed to enhance texture and shelf-life. This fat has been linked to heart disease.
- High-Fructose Corn Syrup: Although this sweetener increases the shelf life, it has also been associated with obesity, diabetes and heart disease.
Other Tips
You should limit the amount of food that is highly processed and choose whole foods, minimally or not processed. You can identify additives in food by reading the labels. Maintaining a healthy diet, which includes fruits, vegetables, proteins and whole grains as well as healthy fats, can reduce the exposure of preservatives.
Conclusion
While food preservatives are important in the prevention of food spoilage, and can extend shelf life for food, they may also have adverse effects on your health if consumed over an extended period. By making informed decisions about what we eat, and choosing less-processed alternatives, you can promote better health in the long term.
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