The Truth About Supplements: What You Actually Need, What to Skip, and Why One Size Never Fits All

Walk down any pharmacy aisle or scroll through Instagram for five minutes and you'll be convinced you need at least seven different supplements before breakfast. The reality? Most people are either taking the wrong things, the wrong forms, or simply spending money on products their body doesn't actually need.

In this post, we're cutting through the noise on supplements - what the evidence actually says, which ones are worth your money, and why personalised testing is always the starting point.

Supplements Are Not a Magic Fix

The clue is in the name. Supplements are designed to supplement a gap in your diet - not replace it, not fix it, and definitely not substitute for one. No amount of supplementation will outrun a consistently poor diet.

Before reaching for anything, the foundation should be a whole-food diet that includes varied protein sources, five serves of vegetables, two serves of fruit, and adequate healthy fats. Once that base is in place, targeted supplementation can make a meaningful difference.

Why Personalised Testing Matters

One of the biggest mistakes people make is supplementing without testing. Here's why that's a problem:

• Standard blood test reference ranges are based on the general population seeking medical care - not on healthy, optimally functioning people. The "normal" range for B12, for example, is often set at 150–200 in Australia, yet B12 doesn't cross the blood-brain barrier until levels are above 500.

• Fat-soluble vitamins like vitamin D can accumulate to toxic levels if you overdose without knowing your baseline.

• Some nutrients (like ferritin/iron) are influenced by inflammation, meaning a high result doesn't always mean you have enough iron - it can reflect an immune response instead.

Evidence-Backed Supplements Worth Knowing

Vitamin D

Crucial for bone health, immune function, and mood. Deficiency is common, particularly in southern Australia. Because it's fat-soluble and stored in tissue, testing before supplementing is essential to determine the right dose and duration.

B12

Critical for energy, neurological function, and red blood cell production. Commonly low in people with gut issues, vegetarians, vegans, and older adults (due to reduced stomach acid). The form matters - activated B12 is better absorbed than cyanocobalamin.

Iron

Only supplement when deficient - iron overload is a real risk (especially with hemochromatosis). Low ferritin is common in menstruating women and during pregnancy. Iron bisglycinate is far gentler on the digestive system than ferrous sulfate (found in common pharmacy brands like Ferro-grad C). Test a full iron panel, not just ferritin.

Folate

Essential for red blood cell production and critical in early pregnancy to prevent neural tube defects. Around half the population has a genetic variation that limits absorption of synthetic folic acid - activated folate (5-MTHF) is the better choice.

Omega-3 Fatty Acids

Classed as essential because your body can't produce them. Highly anti-inflammatory, supportive of brain health, nerve function, and skin. Particularly valuable for those who eat little to no oily fish. Vegans can source this from algae oil.

Creatine

One of the most well-researched supplements in existence. Five grams daily supports lean muscle development, cognitive performance, and gym performance. Emerging research shows particular benefits for women. During sleep deprivation, 10-15g may help maintain cognitive function. Choose creatine monohydrate with minimal additives.

Collagen Peptides

Natural collagen production declines significantly from age 25. Type I and Type III collagen peptides support skin elasticity, joint health, and gut lining integrity. Difficult to get therapeutic doses from food alone - a quality hydrolysed collagen supplement fills this gap.

Probiotics and Prebiotics

Prebiotics feed good gut bacteria; probiotics introduce them. Strain specificity matters enormously - Lactobacillus plantarum 299v supports iron absorption, for example, while other strains target eczema, acne, or immune function. Don't guess - work with a practitioner to match strains to your goals.

Magnesium

Widely depleted due to modern farming reducing mineral content in soil. Essential for stress, sleep, anxiety, and nervous system regulation. The form determines the effect: magnesium bisglycinate/glycinate for nervous system support; magnesium citrate for constipation. Taking the wrong form leads to unwanted outcomes.

Red Flags to Watch For

• Multivitamins from the pharmacy shelf: Usually under-dosed and in poorly absorbed forms. The sheer number of ingredients crammed into one capsule means none are at a clinically effective dose.

• Detox supplements: Your liver already detoxes - these are usually laxatives or unnecessary herbs. Not without risk.

• Fat burners: Typically just stimulants. Skip them.

• De-bloating supplements: Often expensive digestive enzymes you could get more effectively from a practitioner-prescribed herbal extract.

The Bottom Line

Supplements can be genuinely life-changing when chosen strategically, based on your individual health picture, blood work, symptoms, and diet. Without that context, you're guessing - and guessing with your health and your wallet.

If you're unsure where to start, book in for a one-on-one consult. We'll look at the whole picture and give you a plan that's actually built for you.