Online Health Articles

The Four Essential Nutrients

Four nutrients you probably need more of

     Chances are. You need to boost your intake of one or two nutrients. Even the most disciplined eaters can be, unknowingly skipping out on key essentials, which can eventually drain energy and lead to health problems.

     According to Health Canada’s Canadian Community Health Survey (CCHS), conducted in 2015, many people’s diets don’t provide enough vitamins and minerals.

     Haphazard eating and an increased reliance on heavily processed foods can undermine your diet.

     Certain eating plans can also shortchange your boy of nutrients, especially some of the latest fads.

     A low-carbohydrate diet (e.g. ketogenic, Atkins-style) can deprive you of gut-friendly fibre, Vitamin C and folate, a B-Vitamin that repairs DNA in cells.

     Gluten-free diets can lack fibre and folate also.  Even if you do eat the recommended amounts of vitamins and minerals, you still might need more. Aging and certain medications can interfere with nutrient absorption. Sure, you can take a supplement to bridge the nutrient gap, and if it’s impossible because some foods you just cannot eat, then I highly recommend it.

     Adding whole foods to your diet though should be your first line of defence. Along with vitamins and minerals, whole foods deliver fiber, antioxidants and anti-inflammatory phytochemicals.


Vitamin A

It’s necessary for normal vision and immune function. Yet, according to Health Canada, more than one-third of Canadians do not consume enough.

     There are two types of Vitamin A in our food; retinol, that’s ready for the body to use, and carotenoids, which are converted to Vitamin A in the body. Foods high in retinol include beef, pork, lamb, chicken, turkey, tuna, milk and cheese.

     Its carotenoids, though, that many people need more of. In addition to providing Vitamin A, research suggests that a higher intake can help guard against heart attack, stroke and certain cancers. Outstanding sources include sweet potatoes, carrots, pumpkin, spinach, collards, kale, dandelion greens and cantaloupe. You will absorb more carotenoids if you eat your meal with a little fat.

Vitamin B 12

As many as 35 per cent of Canadian adults don’t consume the daily recommended 2.4 mcg of B12, a nutrient needed to make red blood cells, repair DNA and keep nerves working properly.

     B12 is found primarily in animal foods—meat, poultry, fish, eggs and dairy products. Some foods are fortified with B12, including plant-based “milks” such as rice and almond milk (1 mcg per cup) and soy products. Fortified nutritional yeast

 sold in natural food stores, is also high in B12.

     If you’re over 50, you might be getting less B12 than you realize. The absorption of B12 from foods relies on an adequate release of stomach acid.

As many as 30 per cent of older adults have atrophic gastritis, a condition that reduces the stomach’s ability to release acid.

     Proton Pump Inhibitors (PPI’s), drugs used to treat ulcers and gastroesophageal reflux disease, interfere with B12 absorption by reducing stomach acid. Metformin, a medication that controls blood sugar, also reduces B12 absorption.

     Older adults, vegans and people who are taking PPI’s and metformin long-term should take multivitamins or B-Complex supplements to ensure they are meeting daily B12 requirements.

Vitamin C

More than one third of our diets fall short of Vitamin C used to make collagen, help the immune system work properly and enhances iron absorption from plant foods.

     Vitamin C is also a powerful antioxidant that protects cells from free radical damage. The recommended daily intake is 75mg for women and 90 mg for men. (Smokers need an extra 35mg.) Of course these numbers are generated by Health Canada who still feels that 400 I.U. of Vitamin D is enough per day in spite of the Canadian Cancer Institute’s recommendation of 2000 I.U. per day.

     Include at least two Vitamin C rich foods in your daily diet, such as red and green bell peppers (152 mg and 95 mg per ½ medium, respectively), oranges (70 mg per 1 medium), kiwifruit (64 mg each), strawberries (98mg per cup), cantaloupe, broccoli, cauliflower and tomato juice.

     To prevent chronic disease, some experts recommend a daily intake of 1000mg, an amount you can get for eating at least 5 daily servings (2.5 cups) of fruits and vegetables.


As many as four out of 10 Canadians consume too little magnesium, a mineral that helps regulate blood pressure, blood sugar and muscle and nerve function. That’s likely because some of the very best sources—leafy greens and bran cereal—are not everyday foods for many people.

      Eating a diet high in magnesium is also tied to a lower risk of type 2 diabetes, stroke and colon cancer.

     Adults need 310 to 320 mg (women) and 400-420 mg (men) each day. Excellent sources include oat bran, brown rice, quinoa, spinach, Swiss chard, hemp seeds, pumpkin seeds, almonds, cashews, black beans, lentils, tofu and edamame.

     People who are likely to take a proton pump inhibitor long term should take a daily magnesium supplement (200 to 250mg in the bisglycinate form) in addition to eating magnesium- rich foods. [print_link]