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Click and View 一項新的研究發現,服用維他命及鈣補充品的長者,可能比同輩長壽。研究發現,相比只服食用安慰劑藥丸的長者,服食維生素D和鈣補充品長者,有9%在未來最少三年內,很大機會不會死亡。然而,只攝取維他命D則對死亡率沒有影響。

這類研究讓大家深思:究竟補充品對健康有否影響?研究者指出,以總人口計算,長者的死亡率下降9%,是具重大的意義。因為,除了戒煙外,現時大概沒有其他方法能夠明確減低死亡的風險。 眾所周知,維生素D和鈣對骨骼健康非常有益。年長的婦女大多會服用此類補充品可抵禦骨質疏鬆症的影響。部分試驗還發現,補充品的成份可防止長者骨折。除此之外,服用補充品亦可能抑制人們死於癌症的風險。雖然數據未獲各界全面認同,但當中指出鈣和維生素D可降低結腸癌的可能性。


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在美國,有醫學研究指出,成人每天不應攝取超過100微克(或4000 IU)的維他命D。長者每天攝取鈣的上限為2000毫克。當然,我們可以透過食物攝取鈣和維他命D。乳製品含有豐富的鈣,而我們亦能從蔬菜,如西蘭花和芥蘭、濃縮果汁和早餐穀物中攝取到豐富的鈣質。含有維他命D的食物則相對較少,可在鮭魚或金槍魚等富含脂肪的魚、牛奶,果汁和穀物中攝取。




然而,凡事有利必有弊,不當進食鈣質補充劑有機會增加腎結石的風險。另外,過度攝取維他命D,亦可能會導致噁心,嘔吐,便秘和食慾不振。







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A new research suggests older adults who take vitamin D and calcium supplements may live a bit longer than their peers. It is found that older adults who were given vitamin D and calcium supplements were 9 percent less likely to die in three years than those given placebo pills. Vitamin D on its own, however, showed no effect on death rates.

Those types of studies offer the strongest kind of evidence on whether the supplements have health effects or not. The researcher points out, a 9 percent reduced mortality in the general population of elderly is of major importance since except stopping smoking, there are not many other known interventions that are capable to give such a notable reduction in the risk of death.


Vitamin D and calcium are probably best known as bone-builders. Older women often take the supplements to ward off the bone-thinning disease osteoporosis. Some trials have also found that the supplement combination can prevent falls and bone fractures in the elderly.

Click and ViewThe possibility is that supplements curbed people's risk of dying from cancer. There's some evidence that calcium and vitamin D may lower the odds of colon cancer, though the evidence is not yet "firm".


In the U.S., the Institute of Medicine says people should get no more than 100 micrograms, or 4,000 IU, of vitamin D each day. The upper limit for calcium in older adults is 2,000 milligrams. People can, of course, get calcium and vitamin D through food too. Dairy foods are rich in calcium; other sources include greens like broccoli and kale, and fortified juices and breakfast cereals. Food sources of vitamin D are relatively few, but include fatty fish like salmon and tuna, plus fortified milk, juice and cereals.

As for known side effects, calcium supplements may boost a person's risk of kidney stones. And very high levels of vitamin D can cause symptoms like nausea, vomiting, constipation and poor appetite.



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