Sunday, March 11, 2012

Vitamins every day keep the doctor away - Edmonton Sun

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Should I take vitamin supplements to prevent illness? Do I need them if I eat a balanced diet? What is the best dosage of vitamin D or C?

I often receive questions about vitamin therapy. So are vitamins worth it, or a waste of money? Scottish heritage forbids me to spend money foolishly. Neither should you.

When patients question the value of vitamins, I always ask them, “What do you eat for breakfast?” The reply is often, “I skip breakfast as I’m rushing to the office.” Or “I get a muffin (fat-laden) and coffee on my way to work.” So they start their day with one nutritional strike against them. Their breakfast lacks fibre, vitamins and minerals such as magnesium. This routine is also a great way to develop constipation and irritable bowel syndrome.

The second strike comes when they grab a hamburger for lunch. And later in the day they strike out for the third time when it’s too convenient to pick up a packaged dinner loaded with calories, sugar and salt. Reheating also destroys many of the vitamins that are present.

Some of my friends are strict vegetarians. But in their enthusiasm for avoiding animal products, they may not be getting enough vitamin B12, zinc or calcium.

Readers of this column know I enjoy an alcoholic drink before dinner. I’ve always believed Sir William Osler was right when he said, “Alcohol is for the elderly what milk is for the young.” But only in moderation, as those who imbibe too much are usually vitamin deficient.

As our bodies age, they undergo change. For instance, the stomach produces less acid, making it more difficult to absorb vitamin B12. I recall a patient who was believed to be in the early stages of Alzheimer’s disease who slowly regained normal mental function after receiving this vitamin.

But vitamins are not just for the elderly. There are more than 70 million North American women in their reproductive years. They should all be taking folic acid every day, not just after they become pregnant. Rather, it’s vital to be on this vitamin before they become pregnant to prevent a defect in their baby’s spinal cord. This message is still not being heard by enough women.

Current evidence shows folic acid, vitamins B6 and B12 help to decrease the risk of heart disease by decreasing the blood level of homocysteine, a by-product of protein metabolism. But I believe vitamin C plays an even greater role in preventing heart disease. In fact, studies by Dr. Sydney Bush, an English researcher, prove that high doses of C, plus the amino acid lysine, can open up blocked coronary arteries.

I believe there are now several reasons why it’s prudent to consider vitamin therapy. We must first rid ourselves of the misconception that the majority of North Americans eat a balanced diet. A significant portion of this diet is junk food that does not contain sufficient amounts of fruit, vegetables, fibre, minerals and other vital ingredients.

As a prudent Scot I first try to eat a balanced diet. I also take a variety of vitamins and minerals every day. This routine is not cheap, but relative to the high cost of ill health, I look on these purchases as an inexpensive insurance policy.

A recent report contained disturbing news. Some North American pharmaceutical companies are importing billions of dollars of drugs and ingredients from foreign countries. A report from the University of California says, “Your vitamin pill may as well be labelled Vitamin China.”

It’s ironic that although manufacturers must state where your socks or TV sets were made, this is not true of vitamins. And studies have shown that just as household appliances can differ in quality, so can vitamin products. So it’s important to be careful where you purchase vitamins.

Unfortunately, the 700 words of this column do not allow me to tell you in detail what vitamins and minerals I take every day and why I choose them. But you can obtain this information on my website www.docgiff.com. For comments info@docgiff.com.

Saturday, March 10, 2012

Early signs vitamin D might ease menstrual cramps - Reuters

NEW YORK | Mon Feb 27, 2012 5:56pm EST

(Reuters Health) - A small study suggests women plagued by menstrual cramps may find relief with vitamin D3, raising hopes that the dietary supplement could one day be an alternative to the painkillers and birth control pills that doctors now recommend.

But the treatment involves a mega-dose of vitamin D -- 300,000 IUs -- which made one expert add a don't-try-this-at-home warning.

"This study does suggest (vitamin D) may have a role for menstrual cramps and menstrual pain, but I certainly would not recommend taking doses this high at the present time," said Dr. JoAnn Manson, who heads the division of preventive medicine at Brigham and Women's Hospital in Boston.

"The jury is still out," Manson told Reuters Health. "This is not a definitive trial by any means."

Menstrual cramping without underlying disease, or primary dysmenorrhea, is a common problem for reproductive-age women.

Although over-the-counter painkillers and oral contraceptives can help quell the pain, the drugs have side effects and so aren't an ideal option for long-term relie f, Manson and a colleague write in a commentary on the new study in the Archives of Internal Medicine.

Vitamin D is known to decrease the production of inflammation-provoking molecules called cytokines, as well as hormone-like substances called prostaglandins -- which scientists believe to be a main cause of the distressing cramps.

Studies have suggested prostaglandins may also play a role in conditions like fibromyalgia and joint pain.

So researchers from Italy randomly assigned 40 women with painful periods to either swallow a dose of 300,000 IUs of vitamin D3, or down a shot of inactive liquid.

All of the women had relatively low vitamin D blood levels to begin with, although Manson said they were still higher than what is typically seen in the U.S. And the lower the levels, the more pain women said they experienced.

Two months later, women who had taken the vitamin rated their pain 2.3 points lower than initially on a scale from 0 to 10, and none of them took painkillers anymore.

By contrast, 40 percent of those women who had swallowed the inactive liquid still took the drugs and reported no reduction in pain, according to Dr. Antonino Lasco and colleagues from Universita di Messina.

Manson said it's unclear if women without vitamin D deficiency would also benefit, and the optimal treatment dose and duration remain murky.

And there may be side effects from mega-doses of the nutrient. For instance, an Australian study found that older women getting 500,000 IUs per year had an increased risk of falls and fractures.

Vitamin D is naturally made by the skin when exposed to sunlight and is also found in high amount s in fatty fish such as salmon and tuna.

The U.S. Institute of Medicine recommends that women aged 19 to 50 get 600 IUs of vitamin D a day, with upper tolerable levels of 4,000 IU daily. Higher doses may cause health problems and can damage the heart, blood vessels and kidneys by raising calcium levels in the blood.

A shot of 300,000 IUs every two months would land a woman at an average 5,000 IUs a day -- above the tolerable limit.

"I think it would be reasonable if a woman is having severe menstrual cramps to try a moderate dose and see if she gets relief, but stay below what the Institute of Medicine recommends as the higher level," said Manson.

Vitamin D3 supplements usually cost around $10 to $20 for a month's supply, and Manson said those who want to give it a try could take somewhere between 1,000 IUs and 2,000 IUs a day.< /p>

Some research has also suggested that vitamin D deficiencies could be involved in other ailments, such as cancer and autoimmune disorders. Manson and her colleagues are currently running a large trial to see if taking the vitamin -- with or without fish oil -- can help stave off cancer or heart disease in healthy men and women.

But she also warned that some studies had shown that when it comes to vitamins, more isn't always better. For instance, high doses of beta-carotene may up the risk of lung cancer, whereas too much vitamin E may lead to strokes and prostate cancer.

"We should consider the other mega-dose vitamin studies to be cautionary tales," Manson said. "It is import that the enthusiasm for vitamin D not outpace the evidence. We don't want everyone taking 300,000 IUs for preventing menstrual cramps."

SOURCE: bit.ly/7qXy I Archives of Internal Medicine, February 27, 2012.

Vitamin supplements needed in fast-food era - Winnipeg Free Press

Winnipeg Free Press - PRINT EDITION

SHAUGHN BUTTS / POSTMEDIA NEWS ARCHIVES Vitamin pills are good, but check their source, Gifford-Jones warns.

CNS Enlarge Image

SHAUGHN BUTTS / POSTMEDIA NEWS ARCHIVES Vitamin pills are good, but check their source, Gifford-Jones warns.

Should I take vitamin supplements to prevent illness? Do I need them if I eat a balanced diet? What is the best dosage of vitamin D or C?

I often receive questions about vitamin therapy. So are vitamins worth it, or a waste of money? Scottish heritage forbids me to spend money foolishly. Neither should you.

When patients question the value of vitamins, I always ask them, "What do you eat for breakfast?" The reply is often, "I skip breakfast as I'm rushing to the office." Or "I get a muffin (fat-laden) and coffee on my way to work." So they start their day with one nutritional strike against them. Their breakfast lacks fibre, vitamins and minerals such as magnesium. This routine is also a great way to develop constipation and the irritable-bowel syndrome.

The second strike comes when they grab a hamburger for lunch. And later in the day, they strike out for the third time when it's too convenient to pick up a packaged dinner loaded with calories, sugar and salt. Reheating destroys many of the vitamins.

Some of my friends are strict vegetarians, but in their enthusiasm for avoiding animal products, they might not be getting enough vitamin B12, zinc or calcium.

Readers of this column know I enjoy an alcoholic drink before dinner. I've always believed Sir William Osler was right when he said, "Alcohol is for the elderly what milk is for the young." But only in moderation, as those who imbibe too much are usually vitamin deficient.

As our bodies age, they undergo change. For instance, the stomach produces less acid, making it more difficult to absorb vitamin B12. I recall a patient who was believed to be in the early stages of Alzheimer's disease but slowly regained normal mental function after receiving this vitamin.

But vitamins are not just for the elderly. There are more than 70 million North American women in their reproductive years. They should all be taking folic acid every day, not just after they become pregnant. Rather, it's vital to be on this vitamin before they become pregnant to prevent a defect in their baby's spinal cord. This message is still not being heard by enough women.

Current evidence shows folic acid and vitamins B6 and B12 help to decrease the risk of heart disease by decreasing the blood level of homocysteine, a byproduct of protein metabolism. But I believe vitamin C plays an even greater role in preventing heart disease. Studies by Dr. Sydney Bush, an English researcher, prove high doses of C, plus the amino acid lysine, can open blocked coronary arteries.

I believe there are now several reasons why it's prudent to consider vitamin therapy. We must first rid ourselves of the misconception that the majority of North Americans eat a balanced diet. A significant portion of this diet is junk food that does not contain sufficient amounts of fruit, vegetables, fibre, minerals and other vital ingredients.

First, I try to eat a balanced diet. I also take a variety of vitamins and minerals every day. This routine is not cheap, but relative to the high cost of ill health, I look on these purchases as an inexpensive insurance policy.

A recent report contained disturbing news. Some North American pharmaceutical companies are importing billions of dollars worth of drugs and ingredients from foreign countries. A report from the University of California says, "Your vitamin pill may as well be labelled Vitamin China."

It's ironic that although manufacturers must state where your socks or TV sets were made, this is not true of vitamins. Studies have shown that just as household appliances can differ in quality, so can vitamin products. So it's important to be careful where you purchase vitamins.

Unfortunately, the 700 words of this column do not allow me to tell you in detail what vitamins and minerals I take every day and why I choose them. But you can obtain this information on my website, www.docgiff.com

For comments, info@docgiff.com

Republished from the Winnipeg Free Press print edition March 9, 2012 A21

Friday, March 9, 2012

Allow Your Very Own Nutrition Affluent Juicing Quality Recipes - Seahawk

Keeping yourself in good health is the most essential demand for person’s surviving. We’ve got to consistently consider that our health and wellness is among the primary features to successfully the way we gain the ambitions. Using an junk body is a new hindrance when traveling whatever we need.

Lately, so as to keep a normal life and also physically and mentally in good health, some people participate in various methods and then systems. Most of these systems consist of physical exercise courses, shifting meal plans virlity ex and then using juicing excellent recipes to help keep preferred body fat, perhaps even handling strain. Other people as well eliminate when it comes to letting go of addictions just like smoking and drinking alcohol.

There are conditions that create a bad in good health approach to life just like diet, strain, addictions and additionally not any exercise movements. Poor diet normally creates uneven consumption of nourishment; certain will likely end up using which is not a vitamin although missing out on others. One’s body must have roughly six important substances but some additional nourishment in dimension to stay in in good health. Most of these nourishment are necessary for progress, calorie burning, immunity mechanism in addition to entire body attributes. Plenty of nutritionists today now have affirmed in which juices provide sure health improvements anytime used 100 % pure declare at this point it is recommended that the following ought to be taken having superb idea to only.

Various other well-being industry experts give some thought to juices as a all-natural strategy to obtain normal water which might be a great resource for essential protein, cabohydrate supply, fats, vitamin supplements hgh energizer in addition to substances that happen to be essential to your body. A result of level of popularity, acceptance, along with the attributes of any juices today, now there are enough juicing excellent recipes to choose from. Most of these excellent recipes but not just consist of juices but you can also get produce state of mind in the process. The majority of the juicing excellent recipes we have got today are really uncomplicated to create and this styles tasty plus it can health improvements. Fruits and then organic state of mind will give you a lot of nutritious strengths which might be best to your overall health.

The most widespread liquid excellent recipes increasingly being served by households . consist of cellphone liquid, grape liquid, lemon juice, blueberry liquid and many additional liquid excellent recipes. A result of existence involving vit c and then E having substances, calcium supplements, and then blood potassium when it comes to blackberries that happen to be ultra powerful vitamin antioxidant, certain are convinced that blackberries work well in fighting cancer tumor tissue plus cardiovascular illnesses. Grapes liquid on the flip side is definitely rich in vitamin supplements Some sort of, Y simply, and then T in addition to substances just like birdwatcher, iodine, golf iron and others. Grapes liquid is known to own advantages to be financed . well-known to become an electricity increaser. Additionally, it is wonderful when it comes to not acting on immediately the negative impacts involving getting older simply because of its de-oxidizing belongings. Fresh lemon j uice is definitely rich in vitamin b complex, T, and then Signifiant together with substances love calcium supplements, birdwatcher, golf iron, this mineral and then blood potassium. It’s always very popularly used to stop common colds. Lemons are the well-known all-natural germ killing. It offers the skills to successfully purge any blood along with the liver. Eventually, we have got any blueberry liquid. It’s always rich in vitamin b complex and then T in addition to substances, calcium supplements birdwatcher, this mineral, manganese and then blood potassium. For its higher power of any bromelain molecule its well-known as for the anti-inflammatory functions. Additionally, it is good at gas and might turn into a wonderful aid in certain blood diseases.

When preparing some kind of vegetable or fruit liquid buy vigrx plus from your for which you wash the application well before juicing make certain how the berry is definitely ready sufficiently.

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Early signs vitamin D might ease menstrual cramps - YAHOO!

NEW YORK (Reuters Health) - A small study suggests women plagued by menstrual cramps may find relief with vitamin D3, raising hopes that the dietary supplement could one day be an alternative to the painkillers and birth control pills that doctors now recommend.

But the treatment involves a mega-dose of vitamin D -- 300,000 IUs -- which made one expert add a don't-try-this-at-home warning.

"This study does suggest (vitamin D) may have a role for menstrual cramps and menstrual pain, but I certainly would not recommend taking doses this high at the present time," said Dr. JoAnn Manson, who heads the division of preventive medicine at Brigham and Women's Hospital in Boston.

"The jury is still out," Manson told Reuters Health. "This is not a definitive trial by any means."

Menstrual cramping without underlying disease, or primary dysmenorrhea, is a common problem for reproductive-age women.

Although over-the-counter painkillers and oral contraceptives can help quell the pain, the drugs have side effects and so aren't an ideal option for long-term relief, Manson and a colleague write in a commentary on the new study in the Archives of Internal Medicine.

Vitamin D is known to decrease the production of inflammation-provoking molecules called cytokines, as well as hormone-like substances called prostaglandins -- which scientists believe to be a main cause of the distressing cramps.

Studies have suggested prostaglandins may also play a role in conditions like fibromyalgia and joint pain.

So researchers from Italy randomly assigned 40 women with painful periods to either swallow a dose of 300,000 IUs of vitamin D3, or down a shot of inactive liquid.

All of the women had relatively low vitamin D blood levels to begin with, although Manson said they were still higher than what is typically seen in the U.S. And the lower the levels, the more pain women said they experienced.

Two months later, women who had taken the vitamin rated their pain 2.3 points lower than initially on a scale from 0 to 10, and none of them took painkillers anymore.

By contrast, 40 percent of those women who had swallowed the inactive liquid still took the drugs and reported no reduction in pain, according to Dr. Antonino Lasco and colleagues from Universita di Messina.

Manson said it's unclear if women without vitamin D deficiency would also benefit, and the optimal treatment dose and duration remain murky.

And there may be side effects from mega-doses of the nutrient. For instance, an Australian study found that older women getting 500,000 IUs per year had an increased risk of falls and fractures.

Vitamin D is naturally made by the skin when exposed to sunlight and is also found in high amounts in fatty fish such as salmon and tuna.

The U.S. Institute of Medicine recommends that women aged 19 to 50 get 600 IUs of vitamin D a day, with upper tolerable levels of 4,000 IU daily. Higher doses may cause health problems and can damage the heart, blood vessels and kidneys by raising calcium levels in the blood.

A shot of 300,000 IUs every two months would land a woman at an average 5,000 IUs a day -- above the tolerable limit.

"I think it would be reasonable if a woman is having severe menstrual cramps to try a moderate dose and see if she gets relief, but stay below what the Institute of Medicine recommends as the higher level," said Manson.

Vitamin D3 supplements usually cost around $10 to $20 for a month's supply, and Manson said those who want to give it a try could take somewhere between 1,000 IUs and 2,000 IUs a day.

Some research has also suggested that vitamin D deficiencies could be involved in other ailments, such as cancer and autoimmune disorders. Manson and her colleagues are currently running a large trial to see if taking the vitamin -- with or without fish oil -- can help stave off cancer or heart disease in healthy men and women.

But she also warned that some studies had shown that when it comes to vitamins, more isn't always better. For instance, high doses of beta-carotene may up the risk of lung cancer, whereas too much vitamin E may lead to strokes and prostate cancer.

"We should consider the other mega-dose vitamin studies to be cautionary tales," Manson said. "It is import that the enthusiasm for vitamin D not outpace the evidence. We don't want everyone taking 300,000 IUs for preventing menstrual cramps."

SOURCE: http://bit.ly/7qXyI Archives of Internal Medicine, February 27, 2012.

£16 vitamin D treatment that cost the NHS £2400 due to 'supply problems' - Daily Mail

By Sophie Borland

Waste: The NHS spent nearly £80m last year on vitamin D

Waste: The NHS spent nearly £80m last year on vitamin D

The NHS is spending up to £2,400 a time on vitamin D  supplements that can be bought for just £16, it has emerged.

Last year nearly £80million was spent handing out drugs to treat vitamin D deficiency, an amount which has more than doubled in five years.

GPs say they are forced to buy  the more expensive brands of drugs  due to ‘supply problems’ with the cheaper versions.

They point out that such supplements are now in high demand as soaring numbers of adults are being diagnosed with a deficiency in vitamin D, which is important for good health, growth and strong bones.

The recent surge in vitamin D deficiency is also leading to rising numbers of children developing the brittle bone disease rickets, which was commonly seen in Victorian times.

Campaigners say that regardless of this resurgence it is ‘very worrying’ that such vast amounts are being squandered on expensive drugs when the NHS is under severe financial strain.

An investigation by GP magazine has found that one patient last year was given a bottle of medicine containing vitamin D  supplements in liquid form which cost £2,400.

This is 150 times as much as a standard packet of colecalciferol tablets â€" strong vitamin D supplements â€" which is normally priced at £16.

Other figures unearthed from the NHS Information Centre reveal that another four patients were prescribed similar medicines costing £830 each, and a further seven were given tablets priced at just over £500 for a  single course.

Emma Boon, campaign director for the TaxPayers’ Alliance, said: ‘It is very worrying that millions of pounds of taxpayers’ cash are being wasted because of supply problems.

GPs need clearer advice on vitamin D supplements to prevent greater costs in the future due to a potential increase in conditions caused by deficiency.

‘With money so tight in the NHS taxpayers can’t afford  to pay thousands for a pre- scription that should cost signif- icantly less.’

Doctors say that in some instances young children will have to be given liquid medicines rather than tablets â€" which they will not swallow â€" and  that they often cost more.

Waste: Other figures unearthed from the NHS Information Centre reveal that another four patients were prescribed similar medicines costing £830 each, and a further seven were given tablets priced at just over £500 for a single course

Other figures unearthed from the NHS Information Centre reveal that another four patients were prescribed similar medicines costing £830 each, and a further seven were given tablets priced at just over £500 for a single course

But nonetheless Dr Chaand Nagpaul, a GP in North London and senior member of the British Medical Association, said  he could not explain how the NHS had spent £2,400 on a  bottle of medicine.

He said that demand for cheaper vitamin D supplements was ‘outstripping supply’  with increasing numbers of patients being diagnosed with deficiencies.

He added: ‘There will be an increased cost prescribing these supplements but they will benefit the NHS in future.

‘One of the real problems is that the NHS is being judged on how much it spends. What we really need is a system that recognises that increased costs can be justified.’

Earlier this month the chief medical officer Dame Sally  Davies wrote to all doctors urging them to be on the lookout for vitamin D deficiencies in their patients.

There are concerns that a  lack of exposure to sunlight  and a poor diet are contrib- uting to a surge in cases in recent years.

The main source of vitamin D is a chemical reaction triggered in the body when the sun’s rays hit the skin.

It is also found in oily fish,  eggs and fortified break- fast cereals.

Foods that influence the effect of medications - Health 24

In prior articles relating to interactions that may occur between foods and medicinal drugs or medications, we have discussed some of the drugs that can interfere with nutrient uptake, and considered those medications that are linked to weight gain or weight loss. The opposite can also occur, when certain foods affect how effectively and safely specific medications work.

Pressor agents found in foods

Certain chemicals called "pressor agents" (tyramine, dopamine, histamine and phenylethylamine) are known to enhance the effect of monoamine oxidase (MAO) inhibitors such as tranylcypromine which is used to treat depression. Under normal circumstances these pressor chemicals in foods are broken down by enzymes like MAO or diamine oxidases. If a patient is, however, taking an MAO inhibitor like tranylcypromine which inhibits the action of the MAO enzyme, then the pressor agents can cause a variety of negative effects including a hypertensive crisis. The latter severe reaction is characterised by an increased heart rate, flushing, and headache, and may lead to the patient suffering a stroke, and even death (Mahan et al, 2011; MIMS, 2011)

Medications containing selegiline which is used in the treatment of Parkinson’s Disease, should not be used together with foods that contain the pressor agent tyramine. Foods that contain pressor agents are also contraindicated when patients are being treated with the antibiotic linezolid (Mahan et al, 2011; MIMS, 2011).

Foods that contain pressor agents

Patients taking tranylcypromine, selegiline (in doses higher than 10 mg per day) and linezolid must avoid the following pressor agent-containing foods:

  • Strongly flavoured, aged cheese - cheddar, blue, Gorgonzola or Stilton cheeses- and any cooked dishes made with aged cheese
  • Aged meats - dry sausage like salami, ‘droë wors’ or biltong
  • Soy sauce
  • Fermented soya beans, soya bean paste, teriyaki sauce
  • Tofu or fermented bean curd, tempeh (a fermented soy bean product from Indonesia)
  • Miso (a traditional Japanese seasoning made by fermenting rice, barley and/or soy beans, usually used as a paste)
  • Fava (broad) beans, snow pea pods (contain dopamine)
  • Sauerkraut (pickled, fermented cabbage)
  • Concentrated yeast extracts (Marmite)
  • Banana peels
  • Meat, fish or poultry stored for longer than 3-4 days in the fridge can produce pressor amines
  • Red or white wine (use less than 60 ml a day)
  • Coffee, cola nut extract and any foods/drinks that contain caffeine which is a weak pressure agent. Quantities exceeding 500 mg caffeine a day can produce pressor agent reactions.  Avoid caffeinated energy drinks.
  • Beer, including non-alcoholic beer (do not exceed 2 x 300 ml bottles a day)
  • Liqueurs or distilled spirits such as brandy (not more than 2 tots a day)

(Please note that the prohibition on the intake of alcoholic beverages in this section relates to their content of pressor agents and not to their alcohol content which can also affect how medications work in the human body).

(Mahan et al, 2011; MIMS, 2011)

Caffeine

Caffeine is also a stimulant and when taken in larger doses can influence the effect of amphetamines, methylphenidate (used in medications for ADHD) or theophylline (used in cough syrups for example), resulting in nervousness, shakiness and insomnia (Mahan et al, 2011; MIMS, 2011) .


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On the other hand the stimulant effect of caffeine can counteract the relaxing effects of tranquillisers such as lorazepam. Patients being treated for anxiety with tranquillisers should not use caffeinated energy drinks or drink excessive quantities of coffee or tea (Mahan et al, 2011).

Warfarin and vitamin K-containing foods

Warfarin is a so-called anticoagulant which is used to thin the blood in patients with a tendency to increased clotting. It is used to treat patients after surgery who may be immobilised for lengthy periods, persons with deep vein thrombosis, or patients with heart disease linked to increased blood clotting to name but a few.

Warfarin acts by inhibiting the conversion of vitamin K into its active form and thus inhibiting the formation of 4 different vitamin K-dependent clotting factors. Vitamin K is found in green leafy vegetables (spinach, broccoli, asparagus, cabbage, green beans, lettuce) and avocado. St John’s wort may also counteract the effect of warfarin and patients on anticoagulant therapy may be advised by their doctors not to take herbal products which contain St John’s wort (Mahan et al, 2011).

It stands to reason that any patients using warfarin should check their nutrient supplements (e.g. vitamin, sports, and liquid meal supplements) for added vitamin K. If you need to take warfarin, always mention this when you purchase vitamin or sports supplements containing added vitamin K, and discuss the effect this vitamin may have on the efficacy of your anticoagulant treatment. Your pharmacist will be able to advise you.

Other foods that affect warfarin’s action

Warfarin can, however, also be affected by other foods or substances, which enhance the anticoagulant effect and may cause excessive bleeding (Mahan et al, 2011).

Onions, garlic, quinine (added to cold drinks such as tonic water), pawpaw, mango and vitamin E supplements (in doses higher than 400 IU per day) may all strengthen the effect of warfarin. According to Mahan and her coauthors (2011) the FDA has recently investigated the interaction between cranberries and warfarin. Despite a lack of evidence-based information, the FDA now requires cranberry products sold in the USA, to display a warning to this effect on their labels.

It is evident that a variety of foods are capable of affecting how certain medications work in the human body. Always remember to read the Patient Information Leaflet when you receive prescription medications and to take note if you are warned not to consume certain foods or drinks when using this treatment. You could just endanger your life or make your medication ineffective by eating or drinking the wrong foods or beverages together with your meds.

- (Dr IV van  Heerden, DietDoc, March 2012)                       

References

(Mahan LK et al (2011). Krause’s Food & the Nutrition Care Process. Ed. 13. Elsevier, USA. MIMS, (2011), Vol 51, No 10, October 2011.)

Any questions? Ask DietDoc

Read more:

Medication that affects nutrient intake
Why we don't take our medsÂ