食物中的磷酸三鈉對身體有害嗎?

What is trisodium phosphate?

Sodium phosphate refers to a group of food additives derived from phosphorus.

These additives are made from various combinations of sodium and inorganic phosphates.

Phosphorus is an important mineral found naturally in foods such as milk, beans, meat, fish, eggs, poultry and nuts.

This naturally occurring phosphorus is called organophosphorus and is essential for bone health, cell repair, muscle contraction and nerve function, among other important processes.

Inorganic phosphorus includes phosphorus-derived food additives, such as trisodium phosphate, which are added as ingredients to foods.

Trisodium phosphate is one of the most common sodium phosphate additives and can be found in a variety of foods.

It and other phosphate additives are commonly used in fast food and other highly processed products.

Why is trisodium phosphate added to food?

Trisodium phosphate and other sodium phosphate additives have a variety of uses in the food industry and are present in many commercially prepared products.

They are used to reduce acidity and improve texture in foods such as baked goods and meats.

They also act as leavening agents in baked goods, meaning they help dough rise and hold its shape.

For example, trisodium phosphate is a common ingredient in store-bought breads, cakes, muffins, and cake mixes because of its ability to add volume and height to these items.

It is also often added to meat and seafood products such as bacon, sausages, deli meats and canned tuna to help retain moisture, extend shelf life and prevent spoilage.

Additionally, the sodium phosphate additive helps balance the pH of these foods, preventing them from becoming too acidic or too alkaline, which can cause the food to spoil more quickly.

In addition, sodium phosphate additives act as a thickener or leavening agent in processed foods and prevent the separation of oil and water in processed cheese products.

Is trisodium phosphate safe to eat?

Although some types of sodium phosphate are used in cleaning and painting products, it's important to know that they are not the same as food-grade sodium phosphate.

Food-grade sodium phosphate is used around the world and is considered safe by major regulatory agencies such as the FDA and the European Union.

Eating small amounts of foods containing sodium phosphate is likely not harmful to your health.

However, with many people consuming fast food, processed meats and packaged foods on a daily basis, there are concerns that high levels of sodium phosphate can cause harm to the body.

Organophosphorus occurs naturally in foods such as dairy and meat, and is absorbed much lower and more slowly than the inorganic phosphorus (sodium phosphate) added to processed foods.

The absorption rate of organic phosphorus is much lower than that of inorganic phosphorus.

The digestive system absorbs only 40-60% of organic phosphorus, while it absorbs up to 100% of inorganic phosphorus found in foods such as cereals, cakes, sodas and deli meats.

Because inorganic phosphorus is more readily absorbed by the digestive tract, it affects the body differently than organic phosphorus.

Eating too many foods containing sodium phosphate additives can raise phosphate levels in the body to unhealthy levels.

Research shows that high levels of phosphate are linked to conditions such as heart disease, reduced bone density, premature aging, kidney problems, and even premature death.

Who should avoid using phosphate additives?

While consuming too much sodium phosphate is not good for anyone's health, small amounts are considered safe.

However, people with certain medical conditions should avoid foods containing sodium phosphate additives.

People with kidney disease or kidney failure

When the kidneys are healthy and functioning properly, they filter waste products from the blood, including excess phosphorus.

However, when the kidneys are damaged, such as in people with chronic kidney disease or kidney failure, they lose the ability to excrete waste properly.

People with kidney failure or end-stage chronic kidney disease need to limit their phosphorus intake to avoid high levels of phosphorus in the blood.

Taking in too much phosphorus can damage blood vessels and cause abnormal calcium buildup, further damaging already damaged kidneys.

In fact, higher phosphorus intake is associated with an increased risk of death in patients with kidney failure receiving hemodialysis.

People with osteoporosis and osteopenia

Foods in your diet that are high in sodium phosphate additives may harm bone health. Maintaining normal phosphorus levels in the body is essential for strong bones. However, disrupting this delicate balance by consuming too much or too little phosphorus can wreak havoc on the skeletal system.

A study of about 150 premenopausal women showed that habitually consuming large amounts of foods containing phosphate additives can lead to elevated levels of parathyroid hormone, a hormone that regulates calcium levels throughout the body. Parathyroxine signals the body to release calcium from bones to balance calcium levels in the body. Abnormally high levels of parathyroid hormone can lead to excessive loss of calcium from the bones, which can impair bone health.

people with heart disease

Excessive consumption of sodium phosphate additives can also damage the heart.

In fact, high circulating phosphorus levels are associated with an increased risk of heart disease in people with and without kidney disease.

Too much phosphorus in the body can cause calcification of blood vessels, which can damage the heart.

Studies have found that higher blood phosphate levels are associated with increased coronary artery calcification and other heart disease risk factors.

Studies have shown that serum phosphate levels above 3.9 mg/dL are associated with a significantly increased risk of coronary artery calcification after 15 years.

People with inflammatory bowel disease

Studies in humans and rats have found that elevated phosphorus causes inflammation in the body.

Animal studies show that high intakes of inorganic phosphorus can exacerbate intestinal inflammation.
Inflammation is at the root of ulcerative colitis and Crohn's disease, collectively known as inflammatory bowel disease (IBD). An animal study suggests that a diet rich in inorganic phosphates may worsen symptoms associated with inflammatory bowel disease (IBD). Mice fed a high-phosphate diet had more signs of inflammation, intestinal inflammation, and bloody stools than mice fed a low-phosphate diet.

How to limit your intake of phosphate additives

Getting the recommended amounts of phosphorus through a healthy, balanced diet is not difficult because organic phosphorus occurs naturally in many foods.

However, if you eat a diet high in processed foods, you're likely getting more phosphorus than your body needs, which is bad for your health.

Phosphorus intake has increased steadily over time due to increased consumption of phosphorus-containing food additives such as trisodium phosphate.

Shockingly, research shows that when following a Westernized diet, phosphorus additives in processed foods can account for up to 50% of total daily phosphorus intake.

To avoid consuming too much phosphorus from food additives, limit the following:

  • soda
  • deli meats
  • bacon
  • sausage
  • Sugary breakfast cereals
  • Commercially prepared breakfast bars
  • Cake flour
  • canned tuna
  • fruit flavored drinks
  • Sweetened iced tea
  • Processed baked goods
  • frozen dinner
  • Boxed Macaroni and Cheese
  • fast food
  • non-dairy creamer
  • flavored water
  • cheese sauce

In addition to containing large amounts of sodium phosphate additives, processed foods often contain large amounts of sugar, fat, calories, and preservatives, all of which are unhealthy when consumed in excess.

generalize

Trisodium phosphate is an inorganic phosphate additive commonly added to processed foods.

While trisodium phosphate is safe when consumed in small amounts, consuming foods rich in phosphate additives on a daily basis may harm your health.

High phosphate levels have been linked to kidney disease, intestinal inflammation, reduced bone density, heart disease and even premature death.

Limiting foods containing trisodium phosphate and other phosphate additives is especially important for people with kidney disease, heart disease, inflammatory bowel disease, and osteoporosis.

Minimizing processed foods and focusing on natural sources of phosphorus, such as eggs, fish, beans and nuts, can help ensure you're getting the right amount of phosphorus to help your body thrive.

Review

All comments are moderated before being published

HealthyPIG Magazine

View all
牛骨湯食譜大全|Instant Pot 壓力煲 & 傳統老火湯版本

牛骨湯食譜大全|Instant Pot 壓力煲 & 傳統老火湯版本

牛骨湯食譜係香港家庭常見嘅煲湯之一,牛骨湯香濃滋補,配合中藥材更具養生功效。本文介紹肉骨類選擇、牛骨湯建議配搭、常見中藥材分類,以及Instant Pot壓力煲與傳統老火湯版本食譜,並引用科學研究支持。
澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南)

澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 澳洲飲用水發現「食腦變形蟲」:全球風險與地區對策(含各國/各州實用指南) 重點:事件本身不代表飲水會感染;主要風險來自水經鼻腔進入。 目錄 ...
如何判斷雞翅是否變壞?

如何判斷雞翅是否變壞?

重點摘要 雞翅會變質嗎? 如何判斷雞翅是否變壞? 過期雞翅還能食嗎? 雞翅可存放多久? 如何儲存雞翅? 雞翅可以冷凍嗎? 結論 雞翅會變質嗎? 會。皮脂較多、表面不潔或溫度過高時,細菌繁殖更快。 如何判斷雞翅是否變壞? 外觀:皮色發黃、出黑斑或血水。 觸感:表面黏滑、軟爛。 氣...
如何判斷雞蛋是否變壞?

如何判斷雞蛋是否變壞?

重點摘要 雞蛋會變質嗎? 如何判斷雞蛋是否變壞? 過期雞蛋還能食嗎? 雞蛋可存放多久? 如何儲存雞蛋? 雞蛋可以冷凍嗎? 結論 雞蛋會變質嗎? 會。殼面有微孔,溫差及濕度變化會令細菌入侵。 如何判斷雞蛋是否變壞? 水測:沉底=較新鮮;浮起=多半變壞。 打開觀察:蛋白渾濁水樣、蛋黃...
如何判斷羊肉是否變壞?

如何判斷羊肉是否變壞?

重點摘要 羊肉會變質嗎? 如何判斷羊肉是否變壞? 過期羊肉還能食嗎? 羊肉可存放多久? 如何儲存羊肉? 羊肉可以冷凍嗎? 結論 羊肉會變質嗎? 會。脂肪多而易氧化,處理或存放唔好就會變壞。 如何判斷羊肉是否變壞? 顏色:紅轉黑,或出現綠斑。 脂肪:由白轉黃兼有酸味。 氣味:由輕...
如何判斷豬肉是否變壞?

如何判斷豬肉是否變壞?

重點摘要 豬肉會變質嗎? 如何判斷豬肉是否變壞? 過期豬肉還能食嗎? 豬肉可存放多久? 如何儲存豬肉? 豬肉可以冷凍嗎? 結論 豬肉會變質嗎? 會。豬肉表面水活度高,加上處理不潔或溫度過高,容易腐敗。 如何判斷豬肉是否變壞? 顏色:粉紅轉灰、發綠或出斑。 氣味:酸臭、腥臭味濃 ...
如何判斷牛肉是否變壞?

如何判斷牛肉是否變壞?

重點摘要 牛肉會變質嗎? 如何判斷牛肉是否變壞? 過期牛肉還能食嗎? 牛肉可存放多久? 如何儲存牛肉? 牛肉可以冷凍嗎? 結論 牛肉會變質嗎? 會。牛肉含高蛋白同水分,若溫度控制或衛生不當,細菌會快速繁殖,導致變壞。 如何判斷牛肉是否變壞? 顏色:鮮紅轉深褐甚至發黑;脂肪變黃。 ...
成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

成年後懷疑自己有注意力不足過動症(ADHD),應該接受診斷嗎?

在過去,注意力不足過動症(Attention-Deficit/Hyperactivity Disorder, ADHD)多被視為「小孩的病」,很多成年人小時候從未被評估或診斷。直到近年社會對心理健康重視度提升,許多成人才開始懷疑,自己長期以來的專注困難、健忘、衝動或時間管理不良,可能與 ADHD 有關。這種「晚發現」的情況相當普遍,也引發了問題:成年後是否值得接受 ADHD 診斷?

哪些職業對健康影響最大?科學與現實的分析

哪些職業對健康影響最大?科學與現實的分析

在現代社會中,工作佔據了人們生命中相當大的一部分。然而,不同職業對健康的風險並不相同。一些工作性質或環境,會顯著增加慢性病、心理壓力、甚至縮短壽命的風險。以下從科學研究與醫學角度,探討幾類對健康損害較大的職業,並附上相關統計數據。