Vitamins: What, Why and Where - Catherine Saxelby - E-Book

Vitamins: What, Why and Where E-Book

Catherine Saxelby

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Beschreibung

Learn all about the 14 vitamins your body needs for healthy living – their functions, benefits and food sources. Here you will find in-depth, quality information on the vitamins – all in one place. It is a trusted resource for people seeking to make sense of the plethora of often-confusing information about vitamins and supplements. Learn where vitamins are naturally found, how much your body needs each day, the richest sources, symptoms of overdose and deficiency, the official Recommended Dietary Intakes (RDI), easy ways to get your day’s needs and how cooking or processing affect each vitamin. Whether you're looking to boost your health during pregnancy, to slow aging or you're just feeling run down, this guide about vitamins and supplements will give you all the information you need. You will find complete usage and dosage recommendations for the 14 basic vitamins. You’ll be guided through the options that are likely to do you some good, and warned of those with the potential to harm. With clear understandable explanations, the most current scientifically documented guidelines, and easy-to-follow lists, Vitamins – What, Why and Where is your concise, to-the-point guide.

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Veröffentlichungsjahr: 2018

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About Vitamins: What, Why and Where

Learn all about the 14 vitamins your body needs for healthy living – their functions, benefits and food sources.

Here you will find in-depth, quality information on the vitamins – all in one place. It is a trusted resource for people seeking to make sense of the plethora of often-confusing information about vitamins and supplements.

Learn where vitamins are naturally found, how much your body needs each day, the richest sources, symptoms of overdose and deficiency, the official Recommended Dietary Intakes (RDI), easy ways to get your day’s needs and how cooking or processing affect each vitamin.

Whether you’re looking to boost your health during pregnancy, to slow aging or you’re just feeling run down, this guide about vitamins and supplements will give you all the information you need.

You will find complete usage and dosage recommendations for the 14 basic vitamins.

You’ll be guided through the options that are likely to do you some good, and warned of those with the potential to harm.

With clear understandable explanations, the most current scientifically documented guidelines, and easy-to-follow lists, Vitamins – What, Why and Where is your concise, to-the-point guide.

  

  

‘Knowledge is power.’  Francis Bacon (1561–1626), English philosopher

  

 

For our son Guy who’s always been fascinated by vitamins.

Contents

About Vitamins: What, Why and WhereEpigraphDedicationIntroduction – Hello from CatherineUnits and measuresChapter 1:What are vitamins?Grouping and classificationFat-soluble or water-solubleWhy do I need them?Where do I find them?The best natural sources of vitaminsChapter 2:Vitamins – food or pills?Ways to maximise the absorption of vitaminsCan I overdose on vitamins?Vitamin A (retinol)Pro-Vitamin A (beta-carotene)Vitamin B3 (niacin)Vitamin B6 (pyridoxine)CholineVitamin CVitamin DVitamin EVitamin K Vitamin supplements for childrenGood reasons to give a supplement: Reasons to think twice:Times you may need extra vitaminsSmokers (and passive smokers) Heavy drinkersPeople over 60 who are houseboundVegans Anyone on a restricted diet Fussy eatersThose on a restricted weight-loss dietPeople with certain types of anaemiaThose with malabsorption problemsBefore conceptionDuring pregnancyWhen breastfeedingWhen recovering from illness or surgeryLack of moneyThe depleted soil mythChapter 3: The 14 vitamins outlinedVitamin A (retinol)What does it do?How much do I need?Where to find retinol My Top 10 richest food sources Easy ways to get your daily doseSigns of deficiencyInteresting issues Pro-vitamin A (beta-carotene)What does it do?How much do I need?Where to find beta-carotene My Top 10 richest food sources Signs of deficiencyVitamin D (cholecalciferol)What does it do?How much do I need?Where to find vitamin D My Top 10 richest food sources Easy ways to get your daily doseSigns of deficiencyInteresting issues Vitamin E (tocopherol)What does it do?How much do I need?Where to find vitamin E My Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiency Interesting issuesVitamin K (phylloquinone)What does it do?How much do I need?Where to find vitamin K My Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyInteresting issues Vitamin B1 (thiamin)What does it do?How much do I need?Where to find thiaminMy Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyInteresting issuesVitamin B2 (Riboflavin)What does it do?How much do I need?Where to find riboflavin My Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyVitamin B3 (niacin)What does it do?How much do I need?Where to find niacinMy Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyInteresting issues Vitamin B5 (Pantothenic acid)What does it do?Where to find pantothenic acidMy Top 10 richest food sources Easy ways to get your daily doseSigns of deficiencyInteresting factsVitamin B6 (Pyridoxine)What does it do?How much do I need?Where to find pyridoxineMy Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyVitamin B7 (biotin)What does it do?How much do I need?Where to find biotinMy Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyInteresting facts Folate (folic acid)What does it do?How much do I need?Where to find folate My Top 10 richest food sources Easy ways to get your daily doseSigns of deficiencyInteresting issuesVitamin B12 (cyano-cobalamin)What does it do?How much do I need?Where to find vitamin B12My Top 10 richest food sourcesEasy ways to get your daily doseSigns of deficiencyInteresting issues CholineWhat does it do?How much do I need?Where to find cholineMy Top 10 richest food sources Easy ways to get your daily dose Signs of deficiencyInteresting issuesVitamin CWhat does it do?How much do I need?Where to find vitamin C My Top 10 richest food sources Easy ways to get your daily doseSigns of deficiencyInteresting issuesReferences and websitesGeneralRelating to individual vitaminsFree extrasAcknowledgementsConnect and keep upAbout the author Catherine SaxelbyConnect with Catherine onlineOther books by Catherine SaxelbyFor more informationCopyright noticeDisclaimerAbout Catherine SaxelbyCopyright

Introduction – Hello from Catherine

Hello and welcome.

Thanks for buying this book. There seems to be so much hype and conflicting information out there on vitamins. My aim is to look beyond the claims and give you the facts you really need in order to make informed decisions. In this book, you’ll discover what vitamins are, how much you need each day and where to find them – as well as delicious ways to get your daily dose.

In the world of nutrition, vitamins remain a perennially popular topic. Their impact on our health – both positive and negative – generates endless discussion and media stories. Remember these headlines?

Can vitamin C really fight off the common cold?

Mushrooms: B12 for vegans?

Folate added to cereals and bread to prevent birth defects in newborn babies.

Vitamin D – the sunshine vitamin – found to be low in many older folk.

As a nutritionist, I am asked about vitamins all the time: How can I tell if I’m deficient in any vitamin? Should I take a supplement as ‘insurance’? What about popping some vitamin C if I feel a cold coming on? I’m vegetarian – do I need extra vitamin B12? Are there downsides to taking extra vitamin E for months and months? And so on.

As vitamin supplements – tablets or capsules, tonics and powders – become increasingly popular, it’s even more important to know the facts. It’s true that some supplements have a positive role in keeping us healthy, like the folate taken pre-conception and during pregnancy or the fish oil that helps the body in myriad ways, from thinning the blood to aiding vision. But many supplements are unnecessary and only serve to fuel the bank balances of pharmacies, health food stores and unscrupulous online hustlers.

I find the whole subject of vitamins fascinating. With new research appearing weekly, it’s an area of nutrition I believe is full of hope and inspiration. It’s such a feel-good topic and one that is a real positive in nutrition – such a contrast to all the controversies surrounding carbs and fats and weight loss … you know what I mean!

How to get the most from this book

This is a book to dip in and out of. You don’t need to read it from cover to cover, although I won’t mind if you do. Use it to:

Look up how much of a particular vitamin you needDiscover the richest food sources of each vitaminCheck out the impact of overdoseFind out the deficiency signs to look forConvert between micrograms, milligrams and IUsRead up on interesting issues.

Why me?

I feel I’m the best to write about this whole topic. I’ve been a nutritionist for almost 30 years and keep a watchful eye on the research. I’ve observed many cycles of interest – just think about the hype about vitamin C to prevent colds, carotenoids to help sooth bad sunburn, thiamin being added to bread and possibly beer (never accepted), getting enough vitamin D without sunlight and whether mushrooms actually produce any vitamin B12.

I first started writing about vitamins, both as an overall topic and from a single vitamin focus, way back in the 1990s. For instance, when folate first became a vitamin of note, I worked with a breakfast cereal company who had started adding folic acid to their products and wanted to publicise the fact.

Plus I started writing about more general things like the whole notion of taking tablets compared to the more old-fashioned view of food tonics. And how a hangover drink loaded with B vitamins works compared to a single tablet of B1. That sort of thing.

On a personal note, I’ve brought up two kids and been through the usual paediatric panic about iron for little ones who refuse to eat meat (or much of anything), DHA supplements for brain development, and the whole problem of getting children to take any sort of pills.

Plus I’m big on eating a nutrient-dense diet so you get plenty of vitamins from natural sources such as vegetables, fruits, nuts, seeds, lean meats, eggs, fish and whole grains.

Remember