 |
เอาข้อมูลจากเว็บวิกิมาแปะเพิ่มครับ
จาก http://en.wikipedia.org/wiki/Soft_drink#Health_effects
Bone loss ------- In a meta-analysis of 88 studies, drinking soda correlates with a decrease in milk consumption along with the vitamin D, vitamin B6, vitamin B12, calcium, protein and other micronutrients.[32] Phosphorus, a micronutrient, can be found in cola-type beverages, but there may be a risk in consuming too much.[32] Phosphorus and calcium are used in the body to create calcium-phosphate, which is the main component of bone. However, the combination of too much phosphorus with too little calcium in the body can lead to a degeneration of bone mass.[32]
Dental decay ----------- Most soft drinks contain high concentration of simple carbohydrates: glucose, fructose, sucrose and other simple sugars. Oral bacteria ferment carbohydrates and produce acid, which dissolves tooth enamel during the dental decay process; thus, sweetened drinks are likely to increase risk of dental caries. The risk is greater if the frequency of consumption is high.[33] This has led to dentists referring to soft drinks as "liquid chainsaws".[34] A large number of soft drinks are acidic, and some may have a pH of 3.0 or even lower.[35] Drinking acidic drinks over a long period of time and continuous sipping can therefore erode the tooth enamel. However, under normal conditions, scientific evidence indicates Coca-Cola's acidity causes no immediate harm.[36] Using a drinking straw is often advised by dentists as the drink does not come into as much contact with the teeth. It has also been suggested[by whom?] that brushing teeth right after drinking soft drinks should be avoided as this can result in additional erosion to the teeth due to the presence of acid.[37][38]
Soft drinks and bone density -------------------------- Research suggests a statistically significant inverse relationship between consumption of carbonated beverages and bone mineral density in young girls, which places them at increased risk of suffering fractures in the future.[40] One hypothesis to explain this relationship is that the phosphoric acid contained in some soft drinks (colas) displaces calcium from the bones, lowering bone density of the skeleton and leading to weakened bones, or osteoporosis.[41] However, calcium metabolism studies by Dr. Robert Heaney suggested that the net effect of carbonated soft drinks, (including colas, which use phosphoric acid as the acidulent) on calcium excretion in urine was negligible. Heaney concluded that carbonated soft drinks, which do not contain the nutrients needed for bone health, may displace other foods which do, and that the real issue is that people who drink a lot of soft drinks also tend to have an overall diet that is low in calcium.[41] In the 1950s and 1960s there were attempts in France and Japan to ban the sale of Coca-Cola as dangerous since phosphates can block calcium absorption. However, these were unsuccessful as the amounts of phosphate were shown to be too small to have a significant effect.[8]
จากคุณ |
:
JD300
|
เขียนเมื่อ |
:
17 ต.ค. 55 11:31:00
|
|
|
|
 |