What Adaptive Nutrition Actually Means

Written by Dr Jatin Joshi, co-founder and Chief Medical and Scientific Officer of Personally, and a researcher at the University of Oxford's Centre for Evidence-Based Medicine. I have a financial stake in this company, and you should weigh what follows with that in mind.

You answered some questions once. A quiz asked about your goals, your diet, probably your sleep, and at the end it produced a formula with your name on the front. That was months ago. The formula has arrived unchanged every month since. You have not.

That gap, between a product chosen once and a body that keeps moving, is what this piece is about.

The short version. Personalised and adaptive get used as though they mean the same thing. They do not. Personalised usually means chosen once, at the start, from a fixed set of options. Adaptive means kept current, rebuilt when you change. The test is whether the thing in front of you is still right in six months, when you are no longer quite the person who took the quiz.

I want to be fair about what the industry already does well, because criticism is only worth reading if the praise came first and was honest.

Most personalisation in this business is routing rather than reformulation. You answer some questions, and an algorithm sends you to a ready-made formula, or assembles one from a fixed menu of options. That is a real improvement on selling one product to everyone. It takes work to build, and the people who build it are not cynics.

But look at what happens after the routing, which is usually nothing. The routing was the personalisation. From that point the formula is fixed. It arrives the same whether your year is calm or falling apart, whether you have started a medication or come off one, whether it is February or August. You were sorted once, and then nothing moved again.

Here is the problem a fixed formula cannot solve, however carefully it was chosen at the start. You do not hold still.

If you are on a GLP-1 such as Ozempic or Wegovy, how much you eat and what you take from it is different this month from last. If you are in perimenopause, some months are steady and some are not, and that plays out over years rather than weeks. Add a new prescription, a hard season at work, a change in how you are eating, and the formula that suited you in month one is quietly wrong by month six.

It was not chosen badly. It was chosen once, for a person who has since moved on.

Adaptive nutrition is the plain answer to that. The formula is built for where you are now rather than where you were when you signed up.

At Personally that means a fresh look every month. What has changed, what you are taking, how you have been, and a formula rebuilt to match, with a note explaining what moved and why. The rebuild happens at the level of the ingredients and their doses, not by switching you between pre-mixed tubs.

As a formulator I would put it more bluntly. You cannot titrate a capsule. If the unit itself never changes, it cannot adapt, whatever the label says. That is the practical reason we make a powder mixed to your specification each month rather than picking bottles off a shelf on your behalf.

The first is that a formula built for you can be built around what else you take. A bottle on a shelf contains what it contains, the same for everyone, because it was made before it met you. A formula made after we have asked what you are prescribed can be screened against your declared medications before anything is mixed. Most brands never ask. On the question of safety that is not a small difference.

The second is quieter and matters more than it sounds. Being built for you means something can be left out as easily as put in. If an ingredient is not right for you, given your history or your prescriptions, it does not go in. A product made for nobody in particular cannot do that. It has already been made./p>

A claim with no limits is a sales pitch, so let me be as clear about the edges as about the idea.

Adaptive nutrition does not treat, cure or prevent anything. It does not replace food, and it does not replace your doctor. Food comes first. The evidence behind any given ingredient is what it is, strong for some and thin for others, and where it is thin we say so rather than dressing it up.

Adaptation also only earns its place if your body is actually changing. For a great many people it is not. If your life is steady, your diet is decent and you are not taking much, a sensible multivitamin and some attention to what you eat will serve you well, and I would rather say so than sell you something more complicated than you need.

It is when the body is in motion, through a medication, a transition, a stretch of life that is not steady, that keeping the formula current stops being a nicety and starts being the point.

So when you see the word personalised, the useful question is short. Personalised once, or kept current? Does it change when you do, or does it arrive the same every month while your life does not?

That is all adaptive nutrition means. Nutrition that keeps up with you, because you are not standing still.