I was convinced I needed “more vitamins.” Not just a little more—more of everything. A multivitamin, an immune blend, extra magnesium for sleep, B12 for energy, vitamin D “because everyone is low,” and zinc because I’d heard it helped with colds. My kitchen cabinet looked like a tiny supplement store.
None of it felt unreasonable. I work out, I try to eat pretty well, and I’m busy—so supplements seemed like the smart insurance policy. Yet I still felt off: low energy in the afternoons, occasional headaches, and workouts that felt harder than they should.
When I finally brought it up with a dietitian, I expected a conversation about which brand to buy or which form was most absorbable. Instead, after I listed my stack, she paused and asked one question that instantly changed the direction of the whole conversation:
“What problem are you trying to solve?”
It wasn’t confrontational. It was practical. And it made me realize I didn’t actually know. I had a vague sense that “more vitamins” would equal “more energy” and “better health,” but I couldn’t name a specific deficiency, symptom pattern, or goal that the supplements were targeting—at least not clearly.
Why that one question matters
Supplements are easy to buy and easy to add. They also feel productive: swallow a capsule, check the “health” box, move on. But the question “What problem are you trying to solve?” forces clarity.
When you name the problem, you can choose the right tool. If the problem is low iron, that’s a very different plan than if it’s low sleep quality, inconsistent meals, or not enough calories to support training. And if there isn’t a clear problem at all—just a general desire to be healthier—the best “tool” is often foundational food and lifestyle habits, not a bigger supplement list.
That question also helps reduce the risk of taking things you don’t need. “More” isn’t automatically better with nutrients. Some vitamins and minerals can build up in the body, some can cause side effects at higher intakes, and some can interact with medications. Even when a supplement is generally safe, taking it without a clear reason can distract from the real fix.
My real “problem” wasn’t a vitamin problem
After the dietitian asked her question, she followed up with a few specifics: When do you feel low energy? What does a typical day of eating look like? How often do you train? What’s your sleep like? Any recent labs? Any digestive issues? Any major stress?
As we talked, a much more grounded picture came into focus. My afternoons were crashing because lunch was inconsistent—sometimes a salad with a little protein, sometimes just coffee and a snack if I was running behind. My workouts were harder because I often trained under-fueled and tried to “eat clean” rather than eat enough. And my headaches? They lined up suspiciously well with days I didn’t drink much water and had multiple cups of coffee.
No supplement was going to fix that pattern. It wasn’t that vitamins were useless; it was that I was asking them to do a job that belongs to basics: adequate food, enough protein, consistent carbs, hydration, and sleep.
The common reasons people feel like they “need more vitamins”
If you’ve ever stood in a supplement aisle thinking, “I probably need something,” you’re not alone. Here are some of the most common drivers behind that feeling—and how they often connect back to more fundamental needs.
1) Low energy
“I’m tired” gets interpreted as “I must be deficient.” Sometimes deficiencies do contribute to fatigue, but fatigue is also one of the most non-specific symptoms in existence.
Before assuming it’s a vitamin issue, it helps to look at:
Sleep quantity and quality: Irregular sleep schedules, late-night scrolling, alcohol close to bedtime, and stress can all affect energy.
Total food intake: Under-eating—especially when you’re active—can leave you dragging. This includes not eating enough overall or not eating enough earlier in the day.
Carbohydrate timing: If you’re training and your meals are mostly protein and vegetables, your glycogen stores may not be well supported. That can show up as sluggish workouts and low afternoon energy.
Hydration: Mild dehydration can make you feel foggy and tired.
Supplements like B12 can be helpful in specific contexts (for example, if intake is low or absorption is impaired), but they’re not a universal energy shortcut.
2) “My immune system feels weak”
It’s tempting to respond to every sniffle with a new supplement. But immune health is heavily influenced by basics: adequate calories, enough protein, micronutrient-rich foods, sleep, and stress management.
Undereating—common in people trying to lose fat while training—can increase susceptibility to illness. Chronic high stress and poor sleep also matter more than most people want to admit.
That doesn’t mean specific nutrients never help. It means it’s wise to first check whether your routine is quietly undermining recovery and resilience.
3) Hair, skin, and nail concerns
When hair sheds more than usual or nails feel brittle, biotin is often the first supplement people reach for. Sometimes the issue is more complex.
Hair and nail changes can be associated with many factors, including low overall intake, low protein, restrictive dieting, stress, or insufficient intake of certain nutrients. If the change is sudden or significant, it’s worth discussing with a qualified healthcare professional to rule out underlying causes rather than guessing with supplements.
4) Muscle cramps and soreness
Magnesium gets a lot of attention here, and for good reason: it plays a role in muscle function. But cramps can also relate to training load, warm-up habits, electrolyte balance, dehydration, or simply pushing harder than your body is currently conditioned for.
If cramps show up during longer workouts or hot conditions, hydration and sodium intake may matter as much as (or more than) magnesium.
5) Wanting “coverage” because diet isn’t perfect
This is the most relatable reason of all. Nobody eats a perfectly balanced diet every day. A basic multivitamin can be a reasonable safety net for some people, especially if access to a variety of foods is limited.
The key word is basic. More pills don’t automatically equal better coverage. And the goal shouldn’t be to use supplements as permission to skip meals, avoid vegetables, or live on protein bars.
What my dietitian had me do instead of adding supplements
Once we identified the real problems—irregular meals, under-fueling around training, hydration gaps—the plan became surprisingly simple. Not necessarily easy, but simple.
We built a consistent meal rhythm
Rather than aiming for a “perfect” meal plan, we focused on consistency:
Protein at each meal: Not extreme amounts, just a reliable anchor.
Carbs that match my activity: Especially around workouts and at lunch to prevent the afternoon crash.
Fats for staying power: Enough to feel satisfied, not so much that meals felt heavy before training.
Fruits and vegetables most days: Not as a rule to “be good,” but as a practical way to increase fiber and micronutrient variety.
We treated hydration like a performance habit
I didn’t need a fancy electrolyte product for every workout. I needed a reliable baseline: water earlier in the day, not just after I felt thirsty. We also talked about paying attention to how coffee intake affected hydration and headaches.
We set “minimum effective” targets
Instead of chasing an ideal routine, we set minimums I could hit even on busy days: a real lunch, a balanced snack before training if there was a big gap, and a protein-forward breakfast a few times a week.
This mattered because the supplement mindset had me searching for an all-or-nothing fix. Minimums made improvement more realistic.
We used lab work and context (not vibes) to guide decisions
The dietitian didn’t tell me to stop everything. She helped me think more clearly about what’s worth testing and what’s worth tracking. If you suspect a deficiency, labs and clinical context can be important. Guessing can waste money and sometimes create new problems.
If you’re considering supplements because of persistent fatigue, performance decline, or other ongoing symptoms, it’s reasonable to consult a qualified healthcare professional. The goal is to match the intervention to the actual need.
How to use that one question for your own supplement routine
You don’t need a dietitian to start using the same filter. Here’s how to apply it in a practical, non-obsessive way.
Step 1: Name the problem in one sentence
Examples:
“I crash every day at 3 p.m.”
“My workouts feel harder than they used to, and my recovery is slower.”
“I’m not eating many animal products and I’m worried about B12.”
“My doctor told me my vitamin D is low.”
If you can’t name the problem, that’s information. It might mean you’re responding to marketing, anxiety, or a general sense that you should be doing more.
Step 2: Ask what the simplest explanation could be
Before buying something new, check the basics:
Am I eating enough total food?
Am I getting protein regularly?
Am I getting carbs to support training and daily energy?
Am I sleeping enough to recover?
Am I hydrated?
Am I chronically stressed?
These aren’t glamorous questions, but they solve more problems than most supplement stacks.
Step 3: Decide what evidence you need
Some supplement choices can be guided by clear data (like lab work), personal dietary patterns (like low intake of a nutrient due to food restrictions), or a targeted goal with a reasonable rationale. Others are based on hope.
If your reason is “I heard it’s good,” pause. “Good” for what, in what dose, for which people, and under what conditions?
Step 4: Add one thing at a time (if you add anything)
When people take five new supplements at once, it’s impossible to know what helped, what hurt, or what did nothing. If you and a professional decide a supplement makes sense, introduce changes gradually and track the outcome you care about—energy, sleep quality, training performance, digestion, or lab values.
Step 5: Reassess and simplify
A supplement doesn’t have to be forever. Some are seasonal, some are temporary, and some aren’t necessary once food routines improve. Periodically ask the same question again: “What problem is this solving now?”
What I kept, what I changed
I didn’t do a dramatic purge. We simplified and made choices based on my actual patterns.
I stopped treating supplements like the main strategy. They became optional extras, not the foundation. The biggest “upgrade” to my health wasn’t a new bottle—it was eating a more reliable lunch, adding a pre-workout snack when needed, and going to bed a little earlier more often.
Within a few weeks, the afternoon crash eased. Workouts felt steadier. The headaches became less frequent. Not because I found a miracle nutrient, but because I finally matched the solution to the problem.
A more helpful way to think about vitamins and fitness
If you’re active, it’s easy to assume your body needs an arsenal of extra support. But fitness already gives you powerful feedback: energy levels, training quality, recovery, mood, hunger cues, and sleep. When those things are off, it’s tempting to reach for a quick fix.
The question that helped me most wasn’t “What should I take?” It was the one that forced me to zoom out:
What problem am I trying to solve?
Answer that honestly and you might find you don’t need more vitamins—you need a better routine, better fuel, or better recovery. And if you do need a supplement, you’ll choose it with clarity instead of guesswork.
Either way, you end up with something better than a crowded cabinet: a plan that actually makes you feel better.