Discover the vitamins you can't live without. Find out where to get them, when to take them and how to enjoy the benefits of vitamins that will improve the health of both your body and your mind.
Fat-soluble
Can be stored in the body
Comes in two forms: retinol, from animal products, and carotenoids such as beta carotene, found mainly in fruits and vegetables
The body converts beta carotene into retinol when needed
Benefits include:
Some of the best sources are liver, eggs, milk and dairy products.
Beta carotene can be found in carrots, dark green vegetables such as broccoli and spinach, as well as brightly colored fruits like apricots, peaches and cantaloupe.
5,000 - 10,000 IU (International Units) of A each day is an optimal intake for most healthy adults.
Good intakes of beta carotene are between 6mg and 15mg a day.
Look for retinyl palmitate as a dry form of A.
Beta carotene works best as part of a mixed carotenoid complex.
Water-soluble
A group of vitamins usually found together in foods
Under the right conditions, the body can produce some of its own Bs
Taking a B-complex supplement may be useful if you:
Eggs, milk and cheese, meat, fish and liver, whole grains, green leafy vegetables and fruit
Try to get a balanced mix of these important Bs. Good daily amounts are:
25-50mg of B1, B2, B3, B5 and B6
50-100mcg of B12
200-400mcg of Folate
25-50mg of Choline Bitartrate, Inositol, and PABA
50-200mcg of Biotin
Should contain a good balance of the important Bs - see Daily Intake above
The body needs a regular supply so either divide dose throughout the day or try a time-release product
Water soluble
Also known as ascorbic acid
Most animals can produce their own C but humans must rely on diet and supplements to fulfill their requirements
Citrus fruits and berries, green leafy vegetables, tomatoes, peppers, cauliflower, potatoes
An optimum intake for most healthy adults is 1,000mg-2,000mg.
It is most effective when divided into 2-4 smaller doses spread throughout the day or try a time release formula.
High doses may not be suitable if you have a medical condition or you are taking any medication. Always speak with your doctor for advice before taking or increasing a supplement.
C as ascorbic acid is cheaper and readily available. However, if you have a sensitive stomach, look for non-acidic forms such as magnesium ascorbate and calcium ascorbate.
C supplements that also include bioflavonoids help the vitamin to work more effectively.
Fat soluble
Found as D3 (cholecalciferol) and D2(ergocalciferol)
D3 is better absorbed and more bio-available than D2
Has been called the "sunshine vitamin" as it can be produced when UV rays in sunlight hit the skin
Deficiency symptoms include:
Good sources include oily fish such as sardines, herring, salmon and tuna, milk and dairy products, liver and egg yolks.
Between 1,000 IU and 5,000 IU may be needed each day, depending on how much D you obtain from your diet and/or sun exposure.
Look for D3 (cholecalciferol) which is better absorbed and has greater bioavailabilty.
Avoid products that combine D with other fat-soluble vitamins A,E and K as they compete with each other to be absorbed and are best taken separately.
Fat-soluble
Not one vitamin but a group of compounds called tocopherols and tocotrienols
Alpha-tocopherol is the most biologically active member of the E family as well as being the most studied
Higher intakes of E can help:
Wheatgerm, soy beans, nuts, vegetable oils, whole grains, leafy green vegetables and eggs
Most healthy adults can take 400 IU - 1,000 IU a day.
However, as E thins the blood and lowers blood pressure, higher doses may not be suitable for everyone.
Before taking a supplement, always check with a medical professional if you are on medication, have a medical condition or are planning to have surgery.
Choose natural form E, or d-alpha-tocopherol. Synthetic E, known as dl-alpha-tocopherol, is much less effective.
The best supplements also contain other members of the E family known as tocopherols and tocotrienols that support the vitamin's work.
Fat-soluble
Family of vitamins comprising K1 ans K2. They have similar structures but offer different benefits
K3 is a synthetic form and should be avoided
leafy green vegetables, alfalfa, yogurt, egg yolks, kelp, seeds
For most healthy adults, taking a daily dose of 100 mcg to 500 mcg each of K1 and K2 is thought to be safe and effective.
However, as K1 affects blood clotting, supplements are not suitable for anyone prescribed blood thinning medication such as warfarin or coumadin.
Avoid K3, which is synthetic, as it is poorly utilized by the body and can lead to toxic build-up.
K1 can be taken as a stand-alone nutrient but is also found in good amounts in green food supplements such as spirulina and kelp.
The best form of K2 is menaquinone-7, or MK-7, which is easily absorbed and highly bioavailable.
A, D, E and K are fat-soluble and can be stored in the body. For this reason, excessively high doses are not recommended.
However, for most healthy adults, normal intakes are not only safe but essential for all areas of well-being.
C and the Bs are water-soluble. They are not stored in the body like fat-soluble vitamins but are excreted after several hours. As a result, they need to be replenished regularly.
When taking supplements, it is best to divide your daily intake into 2 or 3 doses and take at evenly spaced intervals.
A, beta carotene, C and E are antioxidants that can offer protection from unstable molecules called free radicals.
Free radical damage has been found to contribute to many different health problems such as cancer, Alzheimer's and heart disease.
Getting plenty of these important nutrients should be a priority in any health and wellness program.
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