Walk into any health food store, scroll through Instagram, or listen to a wellness podcast and you'd be forgiven for thinking that everyone needs to be taking a handful of supplements every morning. But is that actually true?
The honest answer is: it depends. And any brand that tells you otherwise is probably more interested in selling you something than in your actual health.
So let's cut through the noise. Here's a genuinely balanced look at who needs supplements, who probably doesn't, and how to figure out where you sit.
First — What Are Supplements Actually For?
Supplements are designed to do exactly what the name suggests — supplement something that is missing or insufficient. They are not meant to replace a healthy diet or lifestyle. They are meant to fill gaps.
The problem is that most people have gaps — often without knowing it. Modern life, modern food production, and modern stress levels have created a situation where even people who eat reasonably well can be running low on key nutrients.
But that doesn't mean everyone needs everything. The goal is to identify your specific gaps and address those — not to take a supplement for every possible health benefit just in case.
The Case That Most People Have Nutritional Gaps
Before we get into who needs what, it's worth understanding why nutritional gaps are so common in the first place.
Soil depletion: Modern agricultural practices have significantly reduced the mineral content of soil compared to 50-100 years ago. This means that even fresh vegetables and fruits contain less magnesium, zinc, and other minerals than they once did. You would need to eat significantly more food today to get the same nutrient levels your grandparents got from a smaller portion.
Processed food dominance: The average modern diet is heavily weighted towards processed and ultra-processed foods, which are calorie-dense but nutrient-poor. Even people who consider themselves healthy eaters often consume far less diversity of whole foods than is ideal.
Indoor lifestyles: Most people spend the majority of their time indoors, which significantly reduces sun exposure — the primary driver of vitamin D production in the body. Vitamin D deficiency is one of the most widespread nutritional deficiencies in the developed world.
Chronic stress: Stress depletes key nutrients — particularly magnesium, B vitamins, and vitamin C — at an accelerated rate. The more stressed you are, the faster your body burns through these nutrients, making it harder to maintain adequate levels through diet alone.
Gut health issues: Even if you eat well, poor gut health can impair your ability to absorb nutrients effectively. You can eat all the right foods and still be deficient if your gut isn't absorbing them properly.
So Who Actually Needs Supplements?
People with dietary restrictions
If you follow a vegan or vegetarian diet, you are almost certainly low in vitamin B12, which is found almost exclusively in animal products. You may also be low in iron, zinc, omega-3 fatty acids, and vitamin D. These are not optional considerations — B12 deficiency in particular can cause serious neurological issues over time.
People who are frequently stressed
Chronic stress is one of the most common and underappreciated drivers of nutritional deficiency. Magnesium is depleted rapidly under stress, and low magnesium makes you more reactive to stress — creating a cycle that's hard to break through diet alone. If you are regularly stressed, exhausted, or burned out, your nutritional needs are higher than someone living a calm, low-pressure life.
People with poor sleep
Poor sleep and nutritional deficiency are deeply intertwined. Low magnesium disrupts sleep, and poor sleep depletes magnesium further. If you struggle with sleep consistently, targeted supplementation may be one of the most impactful changes you can make.
People over 40
As we age, our ability to absorb certain nutrients declines. B12 absorption decreases with age as stomach acid production drops. Vitamin D synthesis becomes less efficient. The gut microbiome naturally loses diversity. For people over 40, the case for targeted supplementation becomes progressively stronger.
People who've recently taken antibiotics
Antibiotics are sometimes necessary, but they wipe out your gut microbiome — beneficial bacteria alongside harmful ones. Without a deliberate effort to restore gut bacteria after a course of antibiotics, your digestive and immune health can remain compromised for months. A high-quality probiotic after antibiotics is one of the most evidence-backed supplement recommendations that exists.
People with limited sun exposure
If you live in a country with limited sunlight for part of the year, work indoors, or cover your skin regularly, vitamin D deficiency is extremely likely. Vitamin D plays a role in immune function, mood, bone health, and more — and it's very difficult to get from food alone.
People eating a typical Western diet
If your diet is relatively low in diversity, high in processed foods, or low in fermented foods and fibre — the majority of the population — your gut microbiome is likely not as healthy as it could be, and several key nutrients are probably below optimal levels.
Who Probably Doesn't Need Many Supplements?
In the interest of genuine honesty — if you tick all of the following boxes, your need for supplementation is likely low:
- You eat a wide variety of whole foods including plenty of vegetables, legumes, nuts, seeds, quality protein, and fermented foods daily
- You spend meaningful time outdoors in sunlight regularly
- You manage stress well and sleep 7-9 hours consistently
- You have good digestive health with no bloating, irregularity, or discomfort
- You don't have any diagnosed deficiencies
- You are not pregnant, elderly, or managing a chronic health condition
If that genuinely describes you — congratulations, you are in a small minority. And even then, a few targeted supplements might still offer meaningful benefits. But you are not someone who needs to be taking ten different things every morning.
The Problem With "Just Eat Better"
It's common to hear the advice "you don't need supplements, just eat a balanced diet." And in an ideal world, that's true. But there are a few problems with this advice as a practical solution for most people:
Most people are not going to dramatically overhaul their diet overnight. Supplements are not a replacement for good nutrition, but they are a realistic and effective bridge for most people living modern lives.
The nutrient content of food has genuinely declined. Even people eating a "good" diet may not be getting what their grandparents got from the same foods.
Some nutrients are genuinely difficult to get in adequate amounts from modern diets — magnesium, vitamin D, and iodine among them.
And finally — some supplements like probiotics, sea moss, and adaptogens like Ashwagandha offer benefits that go beyond simply correcting a deficiency. They support systems that modern life actively disrupts.
How to Figure Out What You Actually Need
Start with the most common gaps. For most people in developed countries the most likely deficiencies are magnesium, vitamin D, B12 (especially if plant-based), and iodine. These are worth addressing first.
Think about your specific symptoms. Poor sleep? Magnesium glycinate is one of the most targeted and evidence-backed supplements you can take. Chronic stress and fatigue? Ashwagandha has solid clinical evidence behind it. Digestive issues, bloating, or low immunity? A quality probiotic is a strong starting point. Brain fog or difficulty concentrating? Lion's Mane is worth serious consideration.
Get a blood test. If you want to be precise, ask your GP for a full blood panel including vitamin D, B12, iron, and magnesium. This takes the guesswork out entirely and lets you supplement with confidence.
Start simple. You don't need to take ten things at once. Start with one or two supplements that address your most pressing concerns, give them 4-6 weeks of consistent use, and assess how you feel before adding anything else.
The Bottom Line
Do you need supplements? Probably yes — at least a few targeted ones. But not because supplements are magic, and not because wellness culture says so. Because modern life creates genuine nutritional gaps for most people, and because the right supplements — taken consistently and chosen thoughtfully — can make a real, measurable difference to how you feel.
The goal is not to take as many supplements as possible. The goal is to give your body what it's missing so it can do what it's already designed to do.
At Nutrienest we believe in supplements that have a clear purpose, solid science, and clean formulas. Browse The Green Line to see our full range — and if you're not sure where to start, the most common first step for most people is magnesium glycinate for sleep and stress, or a probiotic for gut health and immunity.
Published in The Nest — your home for honest, science-backed wellness guidance from Nutrienest.