This is the Guardian.

You might have noticed that everyone has recently become a bit obsessed with blood sugar or glucose.

There are blood sugar influences like the glucose goddess and Justin Richard, aka stop spiking sugar, who will tell you how to keep your blood glucose levels down to stay healthy.

If you eat the elements of a meal in a specific order, can cut the brico spike by up to 75%

75% it's crazy it's crazy crazy let's see what beans and rice do to my blood

sugar and yeah there's the spike right here you can see that went up by 44 milligrams. That's quite high.

There are also wellness firms that claim to give you insight into how your body processes food, like Nutrisense, levels and Signos.

Here in the UK, there's one that you've almost definitely heard of.

Zoe.

You almost certainly would have seen the little video ad with Tim Specter

he's got one of these blepschig the monitors on his arm and he points to it and says something like

this device has changed how I have breakfast forever. This tiny device has changed how I have breakfast forever.

This tiny device has changed the way I eat breakfast every day.

He's only telling you what's happened to him, but the implication is clear, right?

That by wearing this device you will learn things about your blood sugar

response and that will change the way you eat. The idea is that measuring your blood sugar levels

can give you an insight into what's good for you, what foods work for your body,

and which ones you might do best to avoid.

And while plenty of us are excited by the promise of personalized nutrition, many researchers have

begun to question the science behind blood sugar monitoring.

In healthy people, glucose is utterly negligible, I think. The marketing is 15 years at least ahead of the science.

So today on Science Weekly we're asking what do we really know about blood glucose levels and our health?

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