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Nov 26

Going on a vegan diet? Plan it properly to avoid nutritional deficiencies – The Star Online

Diet Comments Off on Going on a vegan diet? Plan it properly to avoid nutritional deficiencies – The Star Online

After reading recent articles, I am wondering about whether vegans can get enough vitamin B12 and enough choline, and if there are other elements that are problematic for them. I have an adult child who has become vegan after years of being vegetarian. He does not cook much and eats a lot of prepared foods, which is not the best anyway, but now I wonder about these issues. I hope you can offer some advice. Thank you, Carolynn.

Dear Carolynn,

By definition, vegan diets exclude all animal foods, including eggs and dairy products. Honey (because it comes from bees) is also a no-no to some vegans.

The latest position paper on this topic by the US Academy of Nutrition and Dietetics assures us that A well-planned vegetarian diet containing vegetables, fruits, wholegrains, legumes, nuts and seeds can provide adequate nutrition.

The key phrase here is well-planned. Whether or not your adult child is getting the most benefit from becoming vegan depends like it does for all eating styles on the nutrient balance in the foods he chooses to eat.

Vitamin B12 has always been a concern in vegan diets as this vital nutrient is not found in plant foods.

And vital means essential; a deficiency of vitamin B12 can cause fatigue, tingling in the fingers or toes, poor digestion and mental symptoms that mimic dementia.

Studies have shown that fermented foods (such as tempeh), nori, spirulina, chlorella algae and unfortified nutritional yeast cannot be relied upon as adequate or practical sources of vitamin B12.

Nutrition experts therefore recommend that, in addition to a supplement that contains vitamin B12, vegans should consume foods fortified with this vitamin at least twice a day. (Many breakfast cereals and other grain-based foods are fortified with B12; check the label.)

Choline is an essential nutrient that helps preserve the structure of all our bodys cells.

In addition, choline helps form neurotransmitters that keep our memory, mood, muscle control and other important functions up to par.

Animal-based foods are the best sources of choline, but this nutrient is also found in plant foods such as cabbage, broccoli, brussels sprouts and other cruciferous vegetables, beans, nuts, seeds and wholegrains.

An added bonus: our bodies can manufacture some choline in the liver.

Surprising to some, protein needs can usually be met in vegan diets with the regular consumption of legumes and soy-based foods.

An exception is the fruitarian vegan diet, which is limited to fruits, and possibly some nuts and seeds. These diets typically supply inadequate amounts of protein.

So there you have it.

Since vegan diets restrict readily-available sources of some key nutrients, your son needs to understand how to plan his meals so as to avoid any nutritional deficiencies.

A registered dietician nutritionist can help. The Monterey County Herald/Tribune News Service

Barbara Quinn is a registered dietician nutritionist and certified diabetes educator in the United States.

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Going on a vegan diet? Plan it properly to avoid nutritional deficiencies - The Star Online

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