Should You Take Creatine, Quit Gluten, and Eat High Protein?

These are the questions I hear every week. Not from people who have read research papers on genomics, but from women who are constantly bombarded with the latest health craze. And they are really tired of trying things that work beautifully for someone else and land totally sideways on them.

The honest answer is not “it depends” with a shrug. The popular rule is very real. It genuinely helps some people, and it genuinely does not help others. The difference is usually not effort, discipline, or how clean your diet is. It is your design.

Functional genomics looks at how your genes actually run in your body — how small spelling differences in your DNA, called SNPs, change the way you process food, clear hormones, handle stress, and respond to everything from caffeine to gluten to a B-complex. Same gene, slightly different instruction. They are the reason two women can follow the same rule and get two different outcomes.

Should I take creatine?

Creatine has had a serious moment in women’s health conversations, and for good reason. There is real research behind it for muscle support, cognitive function, and energy, and the case for women in perimenopause and beyond is genuinely compelling. For a lot of women who are strength training or dragging through mental fatigue, it can be a meaningful addition.

Your body also makes creatine on its own, and women do not all start from the same reserve. Some notice a clear shift with a small dose — strength, brain fog, the feeling of having something in the tank. Other women take the same product for three months and feel nothing except a little extra water weight. That is not a failure, it is really about whether the extra creatine had a job to do in your chemistry. FYI — Your Design Code does not score a single “creatine gene.” It does show energy, muscle, and recovery wiring — including genes like ACTN3 — that change how that extra support lands.

The popular rule says creatine is safe and worth trying. That is mostly true. What your design changes is whether you are likely to feel a real difference or spend a season taking something that was never going to move the needle for your wiring.

Do I need methylated B vitamins?

This one has taken on a life of its own, and I understand why. MTHFR variants are real. Methylation matters. For women who carry certain variants and struggle to convert folate and B12 into forms the body can use, methylated versions can change energy and mood in a way a regular B-complex never did. The well-known MTHFR variants — C677T and A1298C — are the ones most people mean when they say “I have MTHFR.” They affect how efficiently that conversion happens. Methylated forms can bypass a step your body does slowly.

That is not the same sentence as “methylated B vitamins are better for everyone.” If you also run sensitive through COMT — a gene involved in clearing methyl groups and stress chemistry — a high-dose methylated B complex can land as wired, irritable, sleepless, like your nervous system suddenly sped up. If you have ever felt that, it was information. Not proof you cannot take B vitamins. It’s merely proof the form and the dose were not a match for you..

Your design changes whether methylated forms are the missing piece or fuel on a fire that was already too hot. This is when it’s such an advantage to understand how your body was created to run.

Should I give up gluten?

The women who genuinely need to avoid gluten usually know, because the difference when they remove it is big enough that they stop asking the question. Celiac disease is a clear answer. Non-celiac gluten sensitivity is real. For those women, this is not a trend — it is an intervention.

The HLA-DQ genes on the Design Code (including HLA-DQA1, HLA-DQB1, and related markers) are the ones most associated with celiac risk and gluten reactivity. Carrying a higher-risk pattern is not a diagnosis from a blog post. It does mean the gluten conversation deserves more seriousness than a two-week experiment you saw on Instagram. Other women feel better off gluten during a loud season — perimenopause, mold, high stress — because the gut and the immune system are already working overtime, not because wheat is their permanent villain.

What your design changes is whether gluten is the actual variable, or one of several inputs stressing a system that was already strained. Removing it without knowing why you feel better can send you chasing the wrong answer for a long time.

Do I really need high protein?

The high-protein message in midlife is loud because the reasoning underneath it is sound. Muscle declines with age. Protein helps you keep it. Most women are eating less than their body needs to stay strong throughout perimenopause.

What “enough” means is not just a simple equation. Appetite, how you partition food, and how you feel on a high-protein diet vary. FTO is one of the genes people talk about with appetite and weight regulation. Other pathways involved in amino acid handling change how far a chicken breast actually goes. And for a smaller group of women, kidney filtration or uric acid processing is a reason to talk with a practitioner before treating “eat more protein” as an absolute.

The popular rule — eat more protein — is probably right for most women reading this. What your design changes is the number that is actually enough for you, and whether there is any reason to be thoughtful about how high you go.

Why does coffee wreck me when everyone else seems fine?

Because caffeine clearance is one of the most documented genetic differences we have, and the gap between a fast metabolizer and a slow one is not subtle. CYP1A2 is the main gene here. Fast metabolizers clear caffeine and get on with the day. Slow metabolizers are still holding that afternoon cup at midnight. The anxiety, the heart flip, the 2 a.m. brain — that is not weakness. That is the liver following the instructions it was given.

There is a second layer in perimenopause: caffeine sitting on top of a stress system that is already working hard. For some women a morning cup is support. For others it is a loan against cortisol they cannot repay by evening.

If coffee has always been a complicated relationship, your design is probably already talking. This is one of the first pages in a report that makes women say, “Oh. That’s why.”

Should I take DIM or an estrogen-clearance stack?

I wrote about this more fully in why your friend’s hormone protocol made you worse. The short version: DIM and calcium-d-glucarate can be useful when a woman is holding estrogen and her clearance pathways can keep up. For those women, the right support can change how a cycle feels.

COMT and GSTP1 are two of the genes most relevant here. COMT is involved in clearing certain estrogen metabolites in phase two. GSTP1 is part of glutathione conjugation — another step that needs to be working before you push more traffic through the pathway. When those steps are sluggish, aggressive clearance support can back things up. Same bottle. Same dose. Opposite week.

That is why I will not recommend an estrogen-clearance stack without understanding the wiring first.

Should I be taking magnesium, and which kind?

Magnesium deserves the moment it is having. It touches sleep, muscle, stress chemistry, blood sugar, and more — and most women are not getting enough from food. Supplementing is a reasonable starting point. The “which kind” question is where design starts to matter.

How a woman absorbs and uses magnesium is not identical, which is part of why glycinate feels like a revelation for one person and like a blank for another at the same dose. The Design Code does not isolate two “magnesium genes.” It does show stress, sleep, muscle, and blood-sugar pathways that change which form is worth trying first.

The popular rule says take magnesium before bed. And that’s definitely a fair place to start. What your design changes is which form is more likely to get where it needs to go, and whether sleep, stress, or blood sugar should decide which type you try first.

Is cortisol really why I cannot lose weight?

Cortisol does affect fat storage, especially through the midsection. It deals with appetite, sleep, thyroid output, and blood sugar. In perimenopause, when estrogen is shifting and the stress axis is already working harder, a loud cortisol pattern is common. It is not an excuse, and it is also not the only story in the room.

NR3C1 has to do with how sensitive cortisol receptors are. FKBP5 is involved in how the stress response turns on and off. Some women spike higher and stay elevated longer after the same week that barely registers for their sister. That is wiring. It changes how you support recovery — and how much grace you give yourself when your body does not bounce back on someone else’s timeline.

So yes, cortisol can be part of why the scale will not move. The more useful question is not “is cortisol the villain…” The better question is “how does my body handle stress, and what does it need to come down.”

Zone 2 cardio or strength training — which one is actually right for me?

Both of these have evidence, and both belong in midlife. Unfortunately women are still being told to pick a lane based on whoever is winning Instagram this month, then wondering why their training partner’s program left them wrecked.

ACTN3 is the gene people nickname sprint-versus-endurance. It has to do with muscle fiber tendencies — how much your body leans toward power work versus longer, steadier work. Most of us sit in the middle. Recovery is the other layer. Some inflammatory and nervous-system patterns mean four hard sessions a week restore one woman and completely deplete another.

The popular rule is do both. What your design changes is which one to prioritize, how much volume you can actually recover from, and why the same program looks like two different sports on two different bodies.

If it is working, keep it

None of these answers are meant to talk you out of something that is working. If you feel better on creatine, keep taking it. If removing gluten changed your life, that information is real and important. What I want in the conversation is the missing piece: the reason these rules work beautifully for some women and backfire on others is not random. It is specific.

When you understand your design, you stop borrowing other people’s answers. You start building something that was made just for you. That is what Your Design Code is for — not a new rule. The map underneath the ones you have already tried.

If you want the fuller picture of what genes show that a lab printout cannot, start here.

This post is educational. It is not a diagnosis, a lab interpretation, or a reason to start or stop a supplement or diet on your own. Work with your own practitioner for personal decisions.