The purpose of these posts is to get you thinking about your own personal nutrition needs and to help you to make smart, educated decisions on what is best for you. Be critical of sensational marketing claims and talk to a health professional about what is right for you. Here is a great blog post on supplement advice from a blog written by a registered dietitian in America, Nutrition Unplugged.
So are vitamin and mineral supplements necessary or are we wasting our money?
As far as science can tell, supplements are only necessary in cases of special dietary needs or unique phases of life.
In the mean time here are a few points to consider when thinking about taking a supplement.
Food fortification
A lot of today's manufactured food is what nutritionists call fortified. This means that certain vitamins and minerals have been added to the food to boost its nutritional content. As a result, it is easier for our diets to meet our bodies nutritional requirements. For more information on fortified foods in Australia please visit Food Standards Australia and New Zealand (FSANZ). Examples of fortified foods include:
- milk - calcium, vitamin D and omega 3 are some of the nutrients added to some milks,
- breakfast cereal - iron, B vitamins, vitamin C and zinc are just a few of the many nutrients added to breakfast cereals,
- bread - it is now mandatory in Australia for all bread flour to be fortified with folic acid and iodine,
- drinks - Milo and Ovaltine are examples of drink bases that are fortified with a number of different vitamins and minerals,
- margarine - it is mandatory in Australia for margarine to be fortified with vitamin D
- chewing gum - some low sugar chewing gums are now fortified with calcium
Too much of a good thing Yes, it is possible to have too much of a good thing, vitamins and minerals included. Taking a supplement on top of the food you eat, especially if you eat a lot of fortified foods, can put you at risk of certain vitamin and mineral overloads or it makes the supplement completely unnecessary as the body gets rid of any excess.
For water-soluble vitamins (B vitamins and C) we need to consume really high amounts before we reach toxicity. This is because our kidneys are able to filter out any excess we may consume (this is where the expensive wee comes from). Problems can occur from fat-soluble vitamins such as A, D, E and K because they build up in our fat stores
Minerals can also build up in our bodies and you need to be mindful of overload from supplements. This is especially true for men. Due to the fact that men do not regularly lose blood through a menstrual period, it is not necessary for them to take an iron supplement and they must be careful when choosing a multi-vitamin and mineral supplement as most of them contain iron.
Be Supplement Smart
If you are currently taking supplements or think you should be ask yourself the following questions:
- Do I have special dietary needs that eliminate 1 or more food groups from my diet?
- Could I eat more fresh fruits and vegetables?
- Am I eating lots of fortified foods?
- Why do I want to take a supplement? Tired? Stressed? Pregnant? Vegetarian?
I strongly recommend speaking to a health care professional such as an Accredited Practicing Dietitian or a Registered Nutritionist on whether or not a vitamin and mineral supplement is right for you.


