Intermittent fasting? Try the 5th century playbook

Lent is upon us – those 40 days of voluntary masochism that we moderns have mercifully put behind us. Or have we?

Julie Canlis

Julie connects Christian spirituality with ordinary life in Wenatchee, Washington State, where she teaches and writes.

A wine glass of water sits on an empty clean plate.

Daylight fasting.

Jean Fortunet, CC BY-SA 3.0, via Wikimedia Commons.

Fasting, at least in the health world, is no longer a derogatory term but one in vogue. Particularly the merits of the restricted diet, in which you limit the amount of time you eat either to a day (e.g. to an eight-hour window) or a week (e.g. skip eating on two different days). The latter approach, maybe surprisingly, follows in the footsteps of our religious forebears, who fasted every Wednesday and Friday. Could it be that they’d figured out a practice we are just discovering? And what else were they trying to achieve?

To a medieval peasant in Britain, Lent ratcheted up the twice-weekly fast. It was 40 days of a vegan diet, that often increased in intensity as the body adjusted (though the pregnant, young, sick and old were exempt). Lent also issued in much cultural creativity. Who knew that Cathedral at Rouen was a Lenten by-product, as those desperate for butter could get a dispensation by contributing financially to the Butter Towers (as they became known)? And Britons may have Lent to thank for both black peas, a Lancastrian delicacy, and fish & chips, as cooks were challenged to keep Lenten menus interesting.

Despite our caricatures of Lent as a dour and draconian time, it was essential to the enjoyment of medieval life. The purpose of Lent was not the denial but the renewal of pleasure. Maybe it’s precisely that aspect that has echoed through the centuries, manifesting now in our punishing diets, Tough Mudder races, and endurance stunts. Isn’t that a bit part of why we (well, some of us) do them?

This article was first published on March 15 2023.

'One of the principal rhythms of medieval life was this move from feasting to fasting to feasting again.'

Our modern fascination with fasting can also receive wisdom from Lent, which is that fasting for its own sake will always lead to something unhealthy. It must be for the purpose of something greater. Our forebears worried that physical practices could become idolatry, when wrenched out of their context of repentance. As G. K. Chesterton remarked,

'Physical nature must not be made the direct object of obedience; it must be enjoyed, not worshipped.'

The Old Testament prophets were particularly grumpy about this, insisting that fasting would do no good if it did not also help you love your neighbour more. Or as the early third-century Christians who fled from Roman excess into the deserts remarked,

'If you fast regularly, do not be inflated with pride; if you think highly of yourself because of it, then you had better eat meat.'

Fasting on its own will not make us better people, though we might shed a few pounds. Fasting is to restore the pleasure not only to eating, but also to the soul in need of God. Interesting that one of the primary biblical metaphors for a lively spiritual life is that of feasting and eating. Fasting resets the soul with repentance. It is praying with our body. It is not a negation but a purgation of desire – not denying our desires but resetting them. C.S. Lewis wondered whether our desires are not too strong, but too weak.

'We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered to us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased.'

So if you’ve considered intermittent fasting, or even if not but you feel you might need a more balanced perspective on pleasure, consider the Lenten playbook. Feast and fast cyclically. Do it for a greater purpose than just losing weight. Let it change and reset your true desires. And maybe, just maybe, you might discover God waiting for you at the root of all your desires.

Column

Creed

Feminism

Monastic life

29 May 2025

4 min read

Cancelled but not forgotten, the medieval heretic who still intrigues today

Despite erasure and desecration, Guglielma was a trailblazer.

George Pitcher

George is a visiting fellow at the London School of Economics and an Anglican priest.

Seth Johnston on Unsplash.

Is it possible to be martyred years after dying a natural death? The question occurs to me under the Alps between Lyon and Milan and arises from a late thirteenth century story of Guglielma, a spirited 50-year-old to say the least.

She arrived in Milan in 1260 like Ruby Tuesday. No one knew where she came from and yesterday didn’t matter, because it was gone. She lived in poverty, but gathered quite a following. Some said she was the daughter of the King of Bohemia (she was certainly bohemian in the cultic sense), others that she was the cousin of Elizabeth of Hungary or had been married to an English prince.

Guglielma (we have no surname) claimed equality with God, a new dawn for womanhood, and according to a contemporary account stated she was “the Holy Spirit made flesh for the redemption of women” whom she baptised “in the name of the Father and of the Son and of herself.”

Some 20 years after she died, Dominican agents of the Inquisition arrived in Milan and burned a top nun, Maifreda da Pirovano of the local ruling family, at the stake, for claiming that she would be made Pope. Then they pitched up at the Abbey of Chiaravalle, desecrated Guglielma’s tomb, dragged her mouldering remains to a field and burned her bones to dust, scattering her ashes to the winds.

I resolved to embark on a little pilgrimage to Chiaravalle when I arrived in Milan, to pay my respects to Guglielma, my kind of heretic. I’d never heard of her before a short account from the podcasting historian Tom Holland, whose book Dominion, on “the making of the western mind”, I was finishing as I crossed the Italian border.

Pilgrims used to visit her tomb twice a year in the Middle Ages before she was violently exhumed. But you’ll find no record of her at Chiaravalle now. Bizarrely, there were Italian supercars being photographed outside of the abbey when I arrived, but it’s peaceful and original, nonetheless. And Guglielma is, of course, missing.

Speak to one of the Cistercian monks there and they will affect not to have heard of her, then murmur “heretic” and “Bohemian.” But a gentle monk called Davide sweetly told me he would show me her former tomb, in the private grounds out of bounds to visitors, if I returned in 20 minutes.

We walked through the brothers’ vegetable garden and cemetery, where hares were nibbling around a statue of St Francis and the trees grew unruly. There, under a twelfth century arch, was her former grave, now marked with the names of local Milanese benefactors of the abbey. I wondered if they had known they would be laid to rest in heretical soil. The birds sang on.

As such, heresy serves as a reminder not only to overthrow prevailing orthodoxies, but is also divinely owned.

There are lessons to learn from the Gugliema cult. The first is that, as the author of Ecclesiastes has it, there really is nothing new under the sun. Women have been fighting the patriarchy perhaps since Mary Magdalene encountered “the gardener” outside an empty tomb.

There was no word for “deaconess” in the early church, only deacons. The Gugliemites were heralding the dawn of a new age for the Christian Church run by women. That may not be wholly the ambition of today’s women priests, but let’s note in passing that it’s taken more than another 700 years for women to be consecrated as bishops.

The second point is that she really might have had a point about the Holy Spirit. Claiming the third person of the Trinity as herself may have gone a bit far, even by today’s standards, but for a God who holds within “himself” all gender, there is a venerable tradition of considering the Spirit as female.

The Hebrew bible often casts this spirit as female, as in the book Proverbs, where Wisdom is a woman who “shouts in the streets” and “cries out in the public square.” It was St Paul, much later, who said she must keep quiet in church.

Guglielma is a saint only in Folk Catholicism, but women like her and Maifreda were authentic witnesses and trailblazers for women’s apostleship. We can still be too sniffy, even afraid, of heresy and we do well to remember the main charge against the Nazarene at his arrest and execution was precisely that. As such, heresy serves as a reminder not only to overthrow prevailing orthodoxies, but is also divinely owned.

As I left Guglielma’s last grave, I knew it was empty of her, not unlike that other empty tomb. Her violators had liberated her into the world. She’d gone before me.

It was fitting that her ashes had been thrown to the wind, like the wind that had moved across the waters in the act of creation; like the wind that had blown over other disciples at Pentecost. And like the wind that was now gently rustling the trees in this quiet monastic back garden.

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