The Music, Not the Score:
What Denis Noble Teaches a Physician About Genes
· @Thomas Lee Abshier, ND
Denis Noble has spent nearly seventy years studying the beating heart, and he has come away convinced that biology has been telling itself the wrong story. In a conversation with Eric Metaxas posted by Socrates in the City on August 27, 2026, under the title We Have Been Misled About Biology for 80 Years, he made the case again in plain language. He claims the gene is not the master of the body. The body is the master of its genes.
Noble is not a fringe voice in physiology. He held the Burdon Sanderson Chair of Cardiovascular Physiology at Oxford from 1984 to 2004. In 1960, as a graduate student, he published the first mathematical model of a working heart cell, and his team later helped build the first “virtual organ,” a computer model of the whole heart. He served on the committee that examined Richard Dawkins’s doctoral thesis, and he has since become one of the best-known critics of Dawkins’s “selfish gene.”
I stand with Noble on the point that genes are not a program that runs the body. They are a resource the living organism draws on, regulates, repairs, and sometimes rewrites. That changes how we should think about chronic disease, about prevention, and about the patient sitting in front of us. Noble overreaches in some of his claims about evolutionary theory, and I will say where. But his central point about health holds, and the best recent data on genetic prediction support it.
The Question Under the Question
The debate Noble is having with other biologists sounds technical: the Modern Synthesis, the central dogma, the Weismann barrier. Under it lies a question every patient asks, often in so many words: Am I my genes? When a man tells me his father and his grandfather both died of heart attacks at sixty, he is really asking whether his own life is already written.
A second question sits beneath that one. Is a living body a machine reading out a tape, or is it a living whole that acts? If it is a machine, then medicine is repair work on parts, and the patient’s choices are a footnote. If it is a living whole, then the patient’s choices are part of the causal story, and medicine has to treat him as an agent and not merely as a mechanism.
Noble’s answer to both questions is the one I give to my patients. Your genes are real, and for a small number of diseases they decide a great deal. For most of the diseases that kill us, they do not decide the outcome. The way you live does.
Where the Eighty Years Began
Noble dates the problem to the physicist Erwin Schrödinger. In lectures given in Dublin in 1943 and published in 1944 as What Is Life?, Schrödinger proposed that the hereditary material was an “aperiodic crystal” that carried a code and copied itself the way a crystal grows. It was a brilliant guess, and it inspired the generation that found the structure of DNA.
Francis Crick then stated what he called the central dogma of molecular biology: information flows from DNA to RNA to protein, and once it has passed into protein, it cannot flow back. In popular form, this became a one-way chain of command: genes make proteins, proteins make cells, cells make organs, and organs make the body. Richard Dawkins carried the idea to its end in The Selfish Gene (1976). The genes are the immortal “replicators”; the body is a disposable “vehicle” they build to carry themselves into the next generation.
Noble sums up his reply in a line from his 2016 book Dance to the Tune of Life: no gene does anything on its own. A gene does nothing until the cell reads it, and the cell decides what to read, when, and how much. He likes an image from the molecular biologist Max Perutz: DNA is the score of life, not the secret of life. A score is indispensable, but it does not play itself. The orchestra plays it, and an orchestra can play the same score many ways.
That is the misleading story Noble means. The data were never the problem. The picture painted over the data was: a picture of life as a machine run from the bottom up by a code.
The Heart That Will Not Stop
Noble’s evidence begins where his career began, in the heart. It is natural to imagine that a heartbeat has a single “pacemaker” part. Noble’s models showed instead that rhythm arises from the interaction of many proteins in the cell membrane, each shaping the others. No single part holds the rhythm. The rhythm belongs to the system.
The system also has backups. In the interview, he compares the heart to an aircraft with redundant controls: block one rhythm-generating process, and others take over and keep the beat going. He made the same point years ago about experiments in which a gene is knocked out, and the animal turns out nearly normal. The organism finds another way. The same thing happens at a larger scale when the body grows collateral vessels around a blocked artery.
The second lesson from the heart is chance. Noble’s early model produced a perfectly regular beat, but a real heart never does; the intervals vary from beat to beat. This is common clinical knowledge: healthy heart rate variability signals a responsive system; a rigid, metronome-like rhythm often signals disease. Noble’s larger claim is that this randomness is not noise to be tolerated. Organisms harness it. Molecular jostling supplies the raw variety, and the living system selects from it what serves its needs.
The Psalmist did not have a model of ion channels, but he saw the same thing in the whole person: “I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well” (Psalm 139:14).
The Genome Project’s Unkept Promise
When the first draft of the human genome was announced at the White House in June 2000, the public was told it would transform the diagnosis and treatment of most human disease. A quarter century later, Noble says in the interview, sequence alone predicts disease outcome for only a small minority of people, mainly those with single-gene disorders. For roughly 95 percent of people, he says, you cannot read their medical future in their DNA.
That 95 percent is Noble’s round figure, not a measured statistic. But the best large test of genetic prediction points the same way, as shown in a 2023 study by a team at University College London, led by Aroon Hingorani and Sir Nicholas Wald, that examined 926 polygenic risk scores for 310 diseases. A polygenic score adds up the small effects of thousands or millions of common genetic variants into a single number for a person’s risk. The researchers held those scores to the same standard used for other medical screening tests.
The results:
| Measure | What the scores achieved |
|---|---|
| All 310 diseases (median) | Caught 11% of people who later got the disease, while flagging 5% of people who never did |
| Coronary artery disease | Caught 12% of future cases |
| Breast cancer | Caught 10% of future cases |
| Statin decisions | Age alone was a simpler and more effective guide than adding a genetic score |
The authors concluded that polygenic scores performed poorly for screening, individual prediction, and risk stratification, and that strong claims made for them were out of proportion to their performance. They also judged that the scores are unlikely to improve much, because the variants with the strongest effects have already been found. Meanwhile, companies already sell these tests directly to consumers.
Two cautions keep this in perspective. First, single-gene findings such as BRCA1 and BRCA2 do matter; the UCL team was explicit that its results do not apply to them. Second, the researchers who maintain the Polygenic Score Catalog objected that the study took a narrow view of how the scores can be used. Both points are fair. Neither rescues the promise made to the public in 2000.
The Cell Governs Its DNA
Schrödinger’s crystal image implies that DNA copies itself. It does not. Left to the copying enzyme alone, DNA replication makes roughly one mistake in every ten thousand to one hundred thousand letters. The cell then proofreads and repairs the copy with further layers of machinery, and the final error rate falls to about one in a billion or better. Noble’s point is simple: that astonishing fidelity is not a property of the molecule. The living cell holds it. The cell governs the DNA, not the reverse.
The immune system makes the point even more sharply. When the body meets a new virus, the antibody-making cells deliberately mutate a small, targeted region of their own DNA, the part that codes for the binding site of the antibody, at rates far above normal. Out of that burst of variety, the cells whose antibodies fit the invader are selected and multiplied. The genome is changed on purpose, in the right place, at the right time, in response to a need. Noble calls this harnessing chance, and here it is not a theory; it is textbook immunology.
This is also where Noble’s language needs care. Crick’s central dogma, as Crick himself defined it, says only that sequence information cannot pass from protein back into nucleic acid. No experiment has broken that rule, and Noble’s critics are right to say so. What Noble attacks is the larger picture built on it: one-way causation from genes up to the body. On that question the evidence is on his side. The cell reads, edits, silences, and repairs its genes according to its condition. Causation runs both ways, which is what Noble means by “biological relativity”: no level of the organism has a privileged claim to be in charge.
Inheritance Beyond the Gene
Noble’s third line of evidence is epigenetics: chemical marks on DNA and its packaging proteins that switch genes on or off without changing the sequence. The environment can lay down these marks, and some of them pass from a cell to its daughter cells. Noble argues that some can also pass from parent to child, so that what one generation experiences can shape the next. He treats this as a partial return of the idea Darwin himself accepted and later biology dropped: that some acquired traits can be inherited.
Here the evidence must be graded by kind. That the environment changes gene activity within a lifetime is established beyond dispute. That a mother’s nutrition and stress during pregnancy shape her child’s later health is also well supported; the child is exposed in the womb. Inheritance across several generations through such marks has been shown clearly in some plants and in small animals such as roundworms. In human beings it remains contested, because it is very hard to separate inherited marks from shared environment, shared diet, and the womb itself.
So I hold Noble’s claim this way. The principle that heredity is more than DNA sequence is sound. Its reach in human beings across generations is not yet settled. Either way, the practical lesson for a parent is the same: what you eat and how you live before and during pregnancy is not your business alone. It is your child’s inheritance.
The Critics’ Strongest Case
Fairness requires stating the case against Noble at its strongest, and his critics are serious people.
He attacks a theory nobody holds. The evolutionary biologist Erik Svensson of Lund University argues that critics like Noble equate modern evolutionary biology with a narrow “neo-Darwinism” it outgrew decades ago. The field already includes genetic drift, neutral evolution, development, and quantitative genetics. In Svensson’s view the field can absorb the challenges the critics raise, and the critics exaggerate how monolithic the Modern Synthesis ever was. He describes the Third Way of Evolution, the movement Noble co-founded with James Shapiro in 2014, as a fringe movement, and mainstream evolutionary biology has not adopted its claims.
He misstates the central dogma. The biochemist Larry Moran and others argue that Noble attacks a popular caricature of Crick’s rule rather than the rule itself. As noted above, that criticism is correct about the rule.
His claims about directed change are unproven. Jerry Coyne has argued that Noble’s claims about purposeful mutation and inherited acquired traits lack evidence, and that no case is known of evolution actually proceeding by inherited epigenetic marks.
Working geneticists already know this. No serious geneticist believes there is literally a gene “for” heart disease. The phrase is shorthand, and the regulation of genes by the cell is the daily subject of molecular biology.
Each of these points has force against Noble’s claims about evolutionary theory. None of them touches his claim about medicine. Whatever geneticists knew privately, the public was promised predictive genomic medicine, polygenic tests are sold to consumers today, and the best test of those promises found them badly out of proportion to the results. The critics are arguing about how species change over millions of years. My patients are asking whether their own bodies are fixed at conception. On that question Noble is right, and nothing in the case against his evolutionary claims says otherwise.
What This Means in the Clinic
I have held for many years that most chronic disease is diet-induced, and that better access to doctors will not solve it. It takes a change of paradigm, a change of heart and mind. Noble’s work gives that conviction a scientific frame. If the organism governs its genes, then the conditions we give the organism, what we eat, how we move, how we sleep, whether we get sunlight and clean air and water, are inputs to the very process that decides which genes are expressed. Lifestyle is not a minor adjustment on top of genetic fate. It is part of the causal chain itself.
This changes how I answer the man whose father and grandfather died young of heart disease. I take his family history seriously; it tells me where to look and how hard. But I do not let him treat it as a sentence. Families share genes, and they also share kitchens, habits, and beliefs about food. A family history of heart disease is very often a family history of a diet. A polygenic score would add little to what his age, his blood pressure, his weight, and his plate already tell me, and the UCL data say exactly that.
The gene-centered picture also does harm in a quieter way. A patient who believes his disease is in his genes has a reason not to change. My mentor, Dr. Norman Easley, used to say that getting people to change their diet is like getting someone to change their religion. The belief that “it runs in the family” is one of the strongest defenses a person has against that change. Taking it away gently, with evidence, is part of the work of healing.
This is why the vitalistic tradition in naturopathic medicine relies on the natural conditions of health: diet, exercise, sunlight, air, water, herbs, and counseling. It is not hostile to science. It treats the body as Noble’s physiology describes it: as a living, self-correcting whole that recovers when its conditions are restored. For readers who want the dietary side worked out in detail, I continue to recommend Joel Fuhrman’s Eat to Live and Michael Greger’s How Not to Die.
Where Noble Stops, and Where I Go On
I want to be careful not to enlist Noble for a cause he has not joined. He has been described as neutral on religious matters. He is not a creationist, he has rejected intelligent design, and he accepts natural selection as one process among several, arguing that his view is closer to Darwin’s own than to the gene-centered version that came after. Some Christian writers have quoted him as if he had argued for a Designer. He has not, and we should not say he has.
What he has done is clear the ground. In Dance to the Tune of Life he suggests that many scientists defended reductionism partly as a wall against creationism. In the Metaxas interview he argues that science is never merely scientific; it rests on philosophical assumptions that should be stated and examined. He also argues there that chance alone is a poor explanation for the origin of something as complex as a living cell. And in his recent books he insists that purpose and agency are real features of living things, not illusions to be explained away. A physiologist who says organisms act, choose, and pursue goals at every level has reopened a door that the machine picture had nailed shut.
Here I go further than Noble, and I say so plainly. At the center of everything I teach is the conviction that God does not watch our lives from a distance. He lives them with us, from inside. “For in him we live, and move, and have our being” (Acts 17:28). If that is true, then a living body was never a machine run by a code. It is the place where a creature’s life and its Creator’s experience meet. Paul says this of the believer’s body directly: “What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?” (1 Corinthians 6:19).
That is why the care of the body is not vanity, and not merely prudence. What we eat and how we live is felt from inside by the One who lives our lives with us. Noble did not set out to make that argument, and I do not claim he would accept it. But his physiology fits it far better than the machine picture ever did. A body that governs its genes, corrects its own errors, and turns chance toward its needs looks less like a mechanism and more like what Scripture says it is.
Why the Concern Remains Plausible
Some will say that Noble is one dissenting voice, that mainstream biology has absorbed his valid points, and that nothing needs to change. I think his concern holds, for reasons beyond any one paper.
The clinical intuition is strong. Anyone who has watched a body heal knows it is not a passive machine. Wounds close, bones knit, arteries grow around blockages, blood sugar comes down when the diet changes. Physicians see self-correction every day. A theory that casts the body as the obedient product of a code feels wrong at the bedside, and that sense of wrongness, while not proof by itself, deserves a hearing.
The money points one way. Genetic testing companies sell polygenic scores to the public. Drug development is organized around gene and protein targets. Research careers and grants have been built on the promise of genomic prediction, and Noble himself names funding and career incentives as obstacles to admitting its limits. None of this proves bad faith in anyone. But a diet and lifestyle cure cannot be patented, and a field that cannot profit from a finding has less reason to announce it.
Doctrine shapes the system, and the system shapes behavior. The doctrine that genes run the body shaped research priorities, then public messaging, then the beliefs of patients. A patient who hears that heart disease is genetic has a ready reason not to change his diet. The machine picture of life flows downhill into the habits of ordinary people, and the cost is measured in preventable disease.
The data have moved toward Noble, not away from him. Twenty-five years after the genome was sequenced, the largest test of common-variant prediction found it catches about one future case in nine. That is not the result the gene-centered picture predicted. It is the result Noble’s picture predicts.
What Follows
For patients, the lesson is freeing. Your family history is a warning, not a verdict. For most of the diseases that will decide how long and how well you live, your daily choices are part of the cause, and so they can be part of the cure.
For physicians, the lesson is a matter of proportion. Use genetic tests where they have earned their place, in the single-gene disorders where they decide a great deal. Do not let a genetic score crowd out the conversation about the plate, the walk, and the night’s sleep, which matter more for most patients.
For all of us, Noble’s work is a reminder that the picture we hold of life shapes what we do with it. A man who believes he is a machine run by his genes will wait for the machine to fail. A man who knows he is a living whole, made and sustained by God, will tend the life he has been given. I hold this position open to a better argument, as I hold every position I take. I have not yet heard one that answers Noble on this point.
Sources and Their Limits
This essay relies mainly on the mainstream record: peer-reviewed papers, university press releases, and published commentary by Noble and his critics. Where that record could be incomplete or curated, I say so.
The interview itself. I could not obtain a full transcript of the Socrates in the City conversation. What I report Noble saying there comes from the video’s published description and chapter list and from an independent AI-generated summary of the talk, and I have checked each point against his own published writing. The “95 percent” figure is his spoken estimate, not a measured statistic.
- Socrates in the City, We Have Been Misled About Biology for 80 Years (YouTube, August 27, 2026) — https://www.youtube.com/watch?v=18pppZ3egOg
- Socrates in the City episode page — https://socratesinthecity.com/?p=12178
- YouTube Summary, AI-generated summary of the talk (secondary, unverified) — https://youtubesummary.com/summary/18pppZ3egOg
Noble’s own writing. His claims about harnessing chance, biological relativity, and the gene as score are his own and are stated in his own words. These are the strongest sources for what he believes, and the weakest for whether he is right.
- Denis Noble, “The gene illusion,” IAI News — https://iai.tv/articles/the-gene-illusion-auid-1813
- Raymond Noble and Denis Noble, “Can Reasons and Values Influence Action,” Journal for General Philosophy of Science (2020) — https://link.springer.com/10.1007/s10838-020-09525-3
- Denis Noble, “What Future for Evolutionary Biology? Response to Commentaries,” Biosemiotics (2021) — https://link.springer.com/content/pdf/10.1007/s12304-021-09448-6.pdf
- Raymond Noble and Denis Noble, Understanding Living Systems (Cambridge University Press, 2023) — https://core-prod.cambridgecore.org/core/product/9898B3B95D32A8627D853CEFBD2B393E/core-reader
Genetic prediction. The UCL study is the closest thing here to primary evidence, and I have reported both its findings and the objection from the scientists who maintain the Polygenic Score Catalog, who are themselves an interested party. The study measured common-variant scores only; it says nothing against single-gene testing.
- Hingorani et al., “Performance of polygenic risk scores in screening, prediction, and risk stratification,” BMJ Medicine (2023) — https://bmjmedicine.bmj.com/content/2/1/e000554
- UCL News, “Genetic risk scores not useful in predicting disease” (October 2023) — https://www.ucl.ac.uk/news/2023/oct/genetic-risk-scores-not-useful-predicting-disease
- ScienceDaily summary of the study — https://sciencedaily.com/releases/2023/10/231017215935.htm
- Bury Mercury / PA, with the Catalog authors’ response — https://www.burymercury.co.uk/news/national/23862402.genetic-risk-scores-do-not-place-public-health-screening/
The critics. Svensson, Moran, and Coyne are leading defenders of the current framework and so are interested parties in this debate, as Noble is on the other side. I have presented their strongest points. The description of the Third Way as a “fringe movement” is Svensson’s judgment, repeated by Wikipedia.
- Erik Svensson, “The Structure of Evolutionary Theory” (Springer, 2023) — https://lup.lub.lu.se/record/edffe350-c3ca-47fa-84a3-783db2bc28d9
- Larry Moran, “The illusions of Denis Noble,” Sandwalk (2021) — https://sandwalk.blogspot.com/2021/04/the-illusions-of-denis-noble.html
- Jerry Coyne, “Should there be a ‘Third Way’ of evolution? I think not” (2015) — https://whyevolutionistrue.com/2015/01/30/a-third-way-of-evolution-i-think-not/
- Wikipedia, “Denis Noble” — https://en.wikipedia.org/wiki/Denis_Noble
Noble on religion. The description of Noble as neutral on religious matters comes from a Forbes report as quoted by Christian writers; I could not open the Forbes article itself. His rejection of intelligent design is reported in secondary sources.
- Gene Veith, “Evolution with Purpose,” Patheos (quoting Forbes) — https://www.patheos.com/blogs/geneveith/?p=74700
Where the record may be incomplete. Textbook facts in this essay, such as DNA replication error rates and the targeted mutation of antibody genes, are stated from standard physiology and immunology rather than a single cited source. Evidence on human epigenetic inheritance is still developing, and I have marked it as unsettled. Research on gene regulation by diet and lifestyle is less well funded than genomic research, for the reasons given above, so its absence from a literature search is weaker evidence than its presence would be.
Scripture quotations are from the King James Version.