健康对话 (蔬果) 7 – Vitamin C

knowledge - Vitamin C

Vitamin C is a strong antioxidant found in oranges, acerola cherries and other fruits. However, once extracted and processed into pill form, it increase the risk of heart disease. Large, long-term doses of supplemental vitamin C can cause dependency and rebound scurvy can occur after abrupt withdrawal. In contrast, the human body will not have such risks from consuming too many oranges.

Vitamin C itself does not help prevent or overcome the common cold. However, wholesome fruits and vegetables that contain vitamin C and vitamin D, such as orange, spinach or mushroom, can protect against: immune system deficiencies, heart disease, eye disease, skin wrinkling, cancer, stroke, bone weakness, diabetes, and rheumatoid arthritis. 


Taking too many man-made vitamins can harm your health, and there is a possibility of overdose. The American Association for Cancer Research looked at research of over 300,000 people in one of their annual meetings in 2015. They found that: selenium could increase the chances of getting non-melanoma skin cancer; vitamin E increases the chances of prostate cancer; beta-carotene can increase the chances of lung cancer; and folic acid could increase the chances of colon cancer.


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A large government-funded clinical trial of nearly 26,000 people, published in The New England Journal of Medicine, has concluded that fish oil supplements and vitamin D supplements do not work any better than placebo at preventing cancer, heart attacks, or strokes.
Combined High Intake of Vitamin B6 and B12 Supplements Linked to Increased Risk of Hip Fractures
A study published in JAMA (The Journal of the American Medical Association) Network Open found a connection between high intake of vitamin B6 and B12 supplements and hip fractures. A combined high intake of both vitamins increased the risk of hip fracture by as much as 50%. High intake of both vitamin B6 and B12 interacting together seem to increase risk, but a high intake of B12 and a low intake of B6 isn’t associated with increased risk. Researchers suspect high doses of vitamin B6 may increase the risk of falling, and act against hormones that help maintain bone density.

一项发表在《 JAMA (美国医学会期刊) Network Open》上的研究发现,大量摄入维生素B6和B12补充剂与髋部骨折之间存在着联系。同时大量摄取两种维生素,使髋部骨折的风险增加了高达50%。摄入大量的维生素B6和维生素B12 会发生相互作用,可能会促使风险的增加;但是摄入大量的维生素B12及少量的维生素B6则与风险的增加无关。研究人员猜测高剂量的维生素B6可能会增加跌倒的风险,并会抑制有助于维持骨骼密度的激素发挥作用。

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Berrybeat Raspberries

Berrybeat Raspberries

Many people take vitamins, but they do so without full knowledge of the consequences. Vitamins aren’t necessarily good for you, and it’s far too easy to overdose on them. Too much vitamin C and D may cause: kidney stones, difficulty in controlling blood sugar levels, heart issues, blood clots, red blood cell destruction, dangerous abnormal heart rhythms, poor appetite, nausea, vomiting, and constipation. But when vitamins are eaten as part of a wholesome plant, such as carrot or tomato, there are no listed harmful effects.

One study published in the journal JAMA Internal Medicine, which examined data from nearly 40,000 women over 19 years, found that, on average, women who took supplements had an increased risk of dying compared with women who didn’t take supplements. Multivitamins also did little or nothing to protect against common cancers, cardiovascular disease, or death.

There are seven supplements that you should take carefully.

Rosytime 恋玫 acerola

Blueberry 蓝莓

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