Podcast Summary: New Books Network

Episode Title: Katherine Harvey, "The Medieval Guide to Healthy Living" (Reaktion, 2026)
Host: Dr. Miranda Melcher
Guest: Dr. Katherine Harvey
Date: April 1, 2026

Episode Overview

In this episode, Dr. Miranda Melcher interviews Dr. Katherine Harvey, medieval historian and author of The Medieval Guide to Healthy Living (Reaktion, 2026). The discussion dives into how people in medieval England conceptualized health, the surprising (and not-so-surprising) overlaps with today's well-being advice, the influences of environment, diet, class, and even mental health, as well as some practices best left to history. Dr. Harvey provides a nuanced view of medieval “healthy living,” challenging stereotypes and revealing the complexities and practicalities of past approaches.

Key Discussion Points & Insights

1. Dr. Katherine Harvey’s Background and Motivation

• [02:10] Dr. Harvey describes her path from GCSE and university modules in medieval medicine to her research on bishops' bodies, sexual health, and ultimately, her broader interest in healthy living practices in the Middle Ages.
• Notable Quote [03:45]:
  "I suppose like a lot of people I'm quite interested in sort of healthy living and what we can do to keep healthy, exercise and the like. And so it was something that very much tied in with both my historical and personal interests."

2. Preventative Medicine in the Middle Ages

• [04:40] Prevention was central to medieval health care, contrary to modern assumptions of it being “terrible and useless.”
• Focus was on managing the “six non-naturals”: air/environment, food/drink, movement/rest, sleep, excretion, emotions.
• Preventive advice blended medical and Christian ideas: the body was God’s creation and caring for it was a religious duty.
• Especially during crises like the Black Death, there were regimens for avoiding illness.
• Notable Quote [06:05]:
  "They were really keen on the idea that, as you say, prevention is better than a cure. And so medieval medical texts are full of information about what you can do to stay healthy."

3. Access to Health Knowledge

• [07:35] While top-tier knowledge was restricted to universities/monasteries and elite physicians, there was considerable trickle-down.
• Local practitioners like John Crophill documented and applied these ideas among ordinary people, incorporating humor theory and diagnostic practices.
• The church played a major role, both in directly educating clergy and through widely used metaphors and analogies (e.g. confession as purging).
• Notable Quote [08:55]:
  "Even quite low status practitioners in rural backwaters actually have a decent level of knowledge and presumably some of that would have spread out further from there."
• Literacy increases and book availability in the Late Middle Ages let more artisans and urban dwellers engage with health texts.

4. The Healthy Environment

• [11:58] The environment, especially air quality, was seen as crucial to health.
• Concerns about miasmas, stagnant water, poor ventilation, animal and human waste.
• Efforts to maintain cleanliness and infrastructure (e.g. drainage systems, proper disposal of waste, gardens for relaxation and vision).
• Authorities regulated industries (such as tanning and butchery) due to smells and waste.
• Notable Quote [13:01]:
  "They're very keen on gardens...grass is great because grass is green and green is a refreshing color. And it could, by looking at grass, help to sharpen your vision and potentially even...ward off problems like blindness."

5. Understanding Diet and Its Social Context

• [15:47] Food was analyzed in humoral terms (hot/cold, wet/dry) rather than modern nutritional categories.
• Fresh fruits and fish were often viewed with suspicion, believed to be “cold and moist” and thus problematic.
• Cooking methods and sauces were used to re-balance foods’ humoral qualities.
• Dietary advice tailored to individual “complexions.” Food from one's region considered best for their body.
• Social class deeply influenced diet: peasants were thought able to handle "coarse foods" while elites required "delicate foods."
• Notable Quote [18:44]:
  "Often very rich people eat a bit like invalids. They eat a lot of chicken, which was thought to be very delicate meat. They drink wine, which by medieval standards is pretty much the healthiest drink you can get."

6. Exercise: Movement, Choice, and Mental Health

• [23:06] Exercise was encouraged, with an emphasis on movement by choice (not just labor).
• Walking was highly valued for all; other activities included ball games, riding, hunting, swimming.
• Outdoor exercise was ideal for both physical and mental health.
• Indoor options were recommended when necessary—lifting stones, climbing ropes, even singing was considered good for the lungs and spirit.
• Notable Quote [25:55]:
  "If you're a priest, maybe you should exercise indoors—get yourself some big stones and lift them, or have a rope attached to the ceiling in your hall...It's almost like going to the gym, isn't it?"

7. Medieval Concepts of Mental and Emotional Health

• [27:04] Medieval people worried about stress, job pressures, sleeplessness, anger, and aging brains, just as we do today.
• Negative emotions were thought to “dry out the body” and shorten life; happiness was believed to “moisten” and extend it.
• Regimens advised socializing, music, reading, outings—especially in times of crisis like plague outbreaks.
• Authorities even managed emotions during plagues (e.g. banning mourning garments, funeral bells) to prevent societal panic.
• Notable Quote [29:40]:
  "Positive emotions, being happy moistens the body and will make you healthier...Doctors will very much prescribe to people who are struggling with their mental health things like seeing your friends, reading a good book, listening to some music you enjoy, getting outside and going for a walk."

8. Approaches to Aging and Longevity

• [30:46] Many Old Age tropes are misleading: significant numbers lived to 60+ if they survived childhood.
• Quality of life in old age was a focus; keep active, engage mentally, adjust activities as needed.
• Some pursued longevity with dubious methods, such as ingesting gold or bodily fluids.
• Notable Quote [32:56]:
  "There are all these longevity gurus...People were interested in that sort of stuff even in the Middle Ages...eating or drinking gold...hoping to keep them going."

9. Medical Perspectives on Diverse Populations

• [35:00] The "norm" was the able-bodied adult man, but there was medical writing on women’s health, pregnancy, infants, and the elderly.
• Dr. Harvey highlights Michael Savonarola’s regimen for pregnancy: much is sensible (diet, rest), but some advice is harsh or outdated (guilt around miscarriage, recommending wine).
• Medieval medicine explored connections between lifestyle and disabilities, such as diet and blindness.
• Notable Quote [36:46]:
  "They're also quite interested...in the relationship between lifestyle and certain disabilities...For example, blindness can be caused by...diet..."

10. What Did Medieval People Get Wrong?

• [38:25] Some beliefs would not pass muster today, e.g., frequent purging, bloodletting as a preventive measure (especially among clergy denied other forms of "excretion" like sex).
• While phlebotomy was practiced with care for whom, when, and how much, it is a trademark medieval misstep.
• Notable Quote [39:35]:
  "The one they're really keen on, that very much is part of the stereotype...is phlebotomy. Letting blood can be a way to stay healthy. We wouldn't want to bring that one back. Definitely."

11. Lessons for Modern Readers

• [40:25] Harvey emphasizes the positives: the value of prevention, a holistic approach to mind-body health, and the focus on quality of life over simply curing illness.
• Still, she wouldn’t recommend reenacting medieval medicine.
• Notable Quote [41:13]: "I think their sort of quite holistic approach...how the mind and body work together...does seem to me to be, in that sense, quite a sensible way of working."

12. Dr. Harvey’s Current & Future Work

• [41:37] Currently exploring medical treatments as a book topic—potentially “less to be learning from,” but historically illuminating.
• Also researching longevity: stories of supposedly long-lived figures (e.g., Old Tom Parr) whose lives are often explained by “healthy living.”
• Notable Quote [42:32]: "What is very interesting...about these sorts of stories is how often they are very much conceptualized in terms of healthy living...this whole idea of healthy living and how it runs through history is something I'm still very much interested in."

Memorable Moments & Quotes with Timestamps

• [06:05] Dr. Harvey: "Prevention is better than a cure."
• [13:01] Dr. Harvey: "Looking at grass...can help to sharpen your vision and potentially even...ward off problems like blindness."
• [18:44] Dr. Harvey: "Often very rich people eat a bit like invalids."
• [25:55] Dr. Harvey: "It's almost like going to the gym, isn't it?"
• [29:40] Dr. Harvey: "Positive emotions, being happy, moistens the body and will make you healthier."
• [39:35] Dr. Harvey: "The one they're really keen on...is phlebotomy. Letting blood can be a way to stay healthy. We wouldn't want to bring that one back."
• [41:13] Dr. Harvey: "Their quite holistic approach...how the mind and body work together...quite a sensible way of working."

Useful Timestamps for Important Segments

• Introduction & Motivation: [02:03]–[04:00]
• Preventative Medicine: [04:40]–[07:15]
• Knowledge Diffusion: [07:35]–[11:30]
• Environment: [11:58]–[15:34]
• Diet: [15:47]–[20:14]
• Exercise: [23:06]–[26:51]
• Mental Health: [27:04]–[30:27]
• Aging: [30:46]–[34:28]
• Women, Children, Disability: [35:00]–[37:49]
• Medieval Missteps: [38:25]–[40:13]
• Modern Lessons: [40:25]–[41:25]
• Future Projects: [41:37]–[42:57]

Tone and Language

Dr. Harvey and Dr. Melcher provide a conversational, open, and sometimes lightly humorous look at medieval health. They balance the oddities and “yuck” factors of history with a respectful curiosity, consistently highlighting both differences and continuities with present-day health perspectives.

Conclusion

While many medieval practices are best left to the past, Dr. Harvey's research demonstrates that historical approaches to healthy living were more nuanced and—at times—more modern than expected. From a focus on prevention and emotional well-being to a holistic mind-body perspective, the Middle Ages have surprising lessons to offer, as well as reminders of why some medical innovations are best left in history books.