Blood and the Sanctity of Life

Transfusion

“For the life of the flesh is in the blood … it is the blood that makes atonement, by reason of the life.”

Leviticus 17:11

Of all the teachings of the Watchtower, none is more consequential than its prohibition of blood transfusion. Most disagreements between Catholics and Jehovah’s Witnesses can be argued at leisure. This one can kill: Witnesses, including children, have died refusing a transfusion, and the Watchtower has praised such deaths as faithfulness.

On one point a Catholic agrees wholeheartedly: blood is sacred, because life is sacred, and life belongs to God. But the Watchtower has built upon that truth a doctrine that Scripture, Judaism, the Catholic Church, and medicine all read very differently — and a doctrine that, remarkably, has changed again and again over the Society’s history. Vaccinations, organ transplants, and various blood products have each been forbidden at one time and permitted at another.

Let’s look at the texts the Watchtower cites, the history of its shifting position, and what the Bible’s own deepest principle — “I desire mercy, and not sacrifice” — actually requires, and ask …

  • Does the Bible forbid a life-saving blood transfusion, or does it forbid eating the blood of slaughtered animals — while commanding, above all, the saving of life?

I invite your engagement with me on these questions. You may leave comments below, but please be sure to read our policy on commenting before doing so.

Watchtower View

Jehovah’s Witnesses hold that God forbids the use of blood, and that this prohibition extends to blood transfusion. Abstaining from blood is regarded as a serious requirement of true worship — one that identifies them, they believe, as God’s people — and refusing a transfusion even at the risk of death is presented as an act of faithfulness rewarded with everlasting life.

What They Teach

The Bible commands abstaining from blood. Witnesses cite three sets of texts: God’s words to Noah, “Only flesh with its life — its blood — you must not eat” (Gen. 9:4); the Mosaic law, “You must not eat any blood” (Lev. 17:10–14); and the apostolic decree, “Abstain … from blood” (Acts 15:29). They understand “abstain from blood” to cover every use of blood, including taking it into the body by transfusion.1

Transfusion is a form of “taking in” blood. Because a patient can be sustained by nutrients given intravenously, the Watchtower reasons that introducing blood into the veins is morally equivalent to eating it, and so falls under the biblical prohibition.2

Whole blood and four components are forbidden; fractions are a matter of conscience. The current position is that Witnesses do not accept whole blood or its four primary components — red cells, white cells, platelets, and plasma — nor donate blood for others. However, fractions derived from those components (such as albumin, immunoglobulins, clotting factors, and hemoglobin solutions) are “not absolutely prohibited”; each Witness decides for himself. Organ transplants and vaccination are likewise treated as personal decisions, and the Society has more recently made the storing of a patient’s own blood ahead of surgery a matter of conscience as well — a practice it had previously forbidden outright.3

Refusing blood shows respect for the sanctity of life. The Watchtower teaches that blood represents life, which belongs to God, and that to refuse a transfusion — even when life is at stake — is to honor the Creator and to trust him for the reward of everlasting life. Deaths that result, including those of children, are presented as faithful endurance.4

Endnotes
  1. On the scriptural basis and the extension of “abstain from blood” to transfusion, see “Why Don’t Jehovah’s Witnesses Accept Blood Transfusions?” (jw.org) and the medical statement “Religious and Ethical Position on Medical Therapy and Related Matters” (jw.org), citing Genesis 9:3–4; Leviticus 17:13–14; Acts 15:28–29. ↩
  2. The “transfusion is equivalent to eating” reasoning appears in Watchtower literature on blood (e.g., the brochure How Can Blood Save Your Life? and earlier articles arguing that nourishment by intravenous means equates to feeding). The premise is examined and answered in the Catholic View panel. ↩
  3. On the current position — whole blood and four primary components forbidden, fractions a matter of conscience, organ transplants and vaccination personal decisions — see “Religious and Ethical Position on Medical Therapy and Related Matters” (jw.org): “The religious understanding of Jehovah’s Witnesses does not absolutely prohibit the use of fractions derived from the primary components of blood, such fractions as albumin, immunoglobulins, clotting factors, and hemoglobin solutions.” Cf. The Watchtower, June 15, 2000, p. 31. ↩
  4. On refusal as faithfulness and the framing of resulting deaths, see Awake!, May 22, 1994 (cover series “Youths Who Put God First”) and The Watchtower, Apr. 15, 1970, p. 249 (“How foolish it would be to gamble away the prospect of life eternal for the very uncertain promise of a cure by blood transfusion!”). ↩

Catholic View

The Catholic Church honors the same Scriptures the Watchtower cites and draws the opposite conclusion, because the texts forbid something a blood transfusion is not. The blood laws govern the eating of the blood of slaughtered creatures. A transfusion kills nothing and feeds no one; it shares life between two living persons. Where the two are confused, a rule given to protect life is turned into an instrument that ends it — and Christ Himself ruled out that use of any law.

What the Blood Laws Forbade

Read in their own setting, the blood laws concern reverence for life in the taking of animal life for food. When an animal was slaughtered its blood, understood as the seat of its life, was to be poured out on the ground rather than consumed: “you shall pour it out upon the earth like water” (Deut. 12:24). The point was not that blood is a magical substance but that life belongs to God, and the creature’s life was to be surrendered to Him rather than treated as food.1

A transfusion is a different act on every count. Nothing is eaten: transfused blood is not taken as food, not digested, not broken down in the stomach, but introduced into the circulation where it does the work of living blood. Nothing is killed: the donor gives and lives — exactly as a mother’s blood once nourished each of us through the umbilical cord, a transfer of blood between two living persons that nobody imagines to be a sin.

There is a further sign that the Watchtower does not really believe a transfusion is eating. A man told to abstain from meat would not suppose he had broken the rule by receiving a kidney. Eating and transplanting are different things — and a transfusion is in effect a transplant of blood tissue from one body to another. The Watchtower permits organ transplants. If receiving a kidney is not eating a kidney, receiving blood is not eating blood.

“Abstain from Blood” at Jerusalem

That leaves Acts 15, the one New Testament text in the case. Asked whether Gentile converts must keep the Mosaic law, the council answered no, with four exceptions: abstain “from what has been sacrificed to idols, and from blood, and from what is strangled, and from unchastity” (Acts 15:29).

The context tells against reading that as a permanent medical prohibition. These were not four new moral laws for all time but a pastoral accommodation, so that Jewish and Gentile Christians could share a table without scandal — the reason given in the next breath is that “from early generations Moses has had in every city those who preach him” (Acts 15:21). And we can watch Paul handle one of the four items himself: food sacrificed to idols is in itself indifferent, since an idol is nothing, but do not eat it where it would wound a weaker brother (1 Cor. 8; Rom. 14). The provision that is plainly permanent, the prohibition of unchastity, is reaffirmed as moral law throughout the New Testament. The food provisions function as what they were.2

Even at Acts 15 the phrase most naturally means what the rest of Scripture means by it — do not eat blood — as the neighboring item confirms: “what is strangled” is meat not properly drained. It is difficult to suppose Luke imagined his sentence would one day be parsed on a hospital consent form into a checklist of permitted and forbidden plasma derivatives.

The Saving of Life

Behind the particular texts stands a principle that decides the matter, and it is not a Catholic invention but the common inheritance of Scripture. Judaism calls it pikuach nefesh, the saving of life: the duty to preserve a human life overrides almost every other commandment. This is why Orthodox Jews — who drain blood from meat far more strictly than any Witness — permit transfusions without hesitation. Saving a life is not a grudging exception. It is the higher law.3

It is also the principle Christ invokes repeatedly against a religion of rule-keeping that had lost sight of mercy. Challenged for healing on the Sabbath: “what man of you, if he has one sheep and it falls into a pit on the sabbath, will not lay hold of it and lift it out? Of how much more value is a man than a sheep!” (Matt. 12:11–12). Twice He throws Hosea at His critics: “I desire mercy, and not sacrifice” (Matt. 9:13; 12:7). The weightier matters of the law — “justice and mercy and faith” (Matt. 23:23) — govern the lighter, and no ritual regulation may be used to destroy the life it was given to protect.4

Here the Watchtower is caught in its own teaching. It has written that mercy is among the weightier matters of the Law, praising Christ for healing the woman with the flow of blood — ritually unclean under Leviticus, yet commended rather than rebuked. The Society understands the principle. It does not apply it at the one place where everything depends on it.

A Doctrine That Keeps Changing

A teaching presented as the unchanging law of God ought at least not to keep changing. This one has changed repeatedly, in every direction, and the record is the Society’s own.

Blood could be eaten until 1927, when the Noahic prohibition was first declared binding on Christians. Transfusion was not clearly forbidden until the mid-1940s, and did not become a disfellowshipping offense — expulsion and shunning — until 1961, more than eighty years after the movement began. Vaccination was condemned as a violation of God’s covenant from 1921 and quietly permitted again in 1952. Organ transplants were called acceptable in 1949, condemned as cannibalism in 1967 so that Witnesses refused them, and permitted once more in 1980. Serums and gamma globulin were forbidden, allowed, forbidden, and made a matter of conscience across barely two decades.5

That is not the record of a steward transmitting a fixed deposit. It is the record of a committee revising its rules on questions where the wrong answer was fatal. Which raises the gravest question of all. Between 1961 and 2000, Witnesses were required, on pain of disfellowshipping, to refuse blood fractions the Society now freely permits. Some died rather than accept them. If those fractions are acceptable to God now, they were acceptable then — and those believers died for a rule, not for a revelation.6

The Incoherence of the Fractions Rule

The doctrine’s present form is as unstable as its history. Whole blood and its four primary components are forbidden — red cells, white cells, platelets, plasma — while fractions derived from those very components are permitted: albumin, immunoglobulins, clotting factors, hemoglobin solutions. But the four-component scheme is not a fact of nature; it is an artifact of a centrifuge. Medical texts divide blood into two parts, or four, or sixteen, according to purpose. A component simply is a fraction. The line between the forbidden component and its permitted fraction is drawn by the Society, not by Scripture and not by biology — with the result that, broken down finely enough, virtually all of blood becomes acceptable.7

If it is a crime to steal a car, it is no less a crime to strip it and sell the parts. Either taking the blood is wrong or it is not. The same weight falls on the rule about storing blood, which was for decades absolute: a Witness might not store even his own blood for a few hours before surgery, because blood must be poured out. Yet the fractions he was permitted are manufactured from enormous pools of donated, stored blood, a single immunoglobulin dose drawing on tens of thousands of donors. The standard forbade the small storage and permitted the vast one.9

That particular contradiction has since been resolved, and the manner of its resolution is itself the point. The Society has now made the storing of a patient’s own blood ahead of surgery a matter of conscience — reversing a prohibition it had enforced for decades. This is a very large departure. What was once forbidden as a violation of God’s law on the sanctity of blood is now left to the individual, without the underlying texts having changed in any respect. Genesis and Leviticus read today exactly as they read when the practice was banned. Only the ruling has moved.

What Medicine Says

The medical premise — that a transfusion is a form of eating — is false as physiology. Blood taken by mouth is broken down in digestion into its constituent nutrients and never enters the bloodstream as blood; blood given by transfusion circulates and functions as living blood. These are different acts with different effects. A recovering alcoholic told to abstain from drink is not thereby forbidden an alcohol-based disinfectant on a wound, because swallowing and applying are not the same thing — and neither are eating and transfusing.8

The Reply in Brief

The prohibition is real, and the Church does not dismiss it. What she denies is that it reaches the case. The laws forbid eating the blood of a slaughtered creature; a transfusion involves no eating and no slaughter, and the Watchtower’s own acceptance of organ transplants concedes that receiving tissue is not consuming it. Acts 15 was a charitable accommodation for table fellowship, and its neighboring clause about strangled meat shows what kind of question it was answering.

Above all, the law was given because life belongs to God. A reading that turns it into a reason for the faithful to die is not a stricter obedience but a defeat of the law’s own purpose. “I desire mercy, and not sacrifice” is not a marginal saying; Christ quotes it twice, both times against exactly this mistake.

This is the short answer. The full treatment adds the Hebrew vocabulary of nephesh and dam and what the sacrificial system meant by them, the Noahic covenant in its ancient Near Eastern setting, the full documentary history of the doctrine with dates and citations, the medical evidence on bloodless surgery and where it genuinely helps, the Society’s legal position in the courts, and the pastoral question of what to say to a family facing the decision. It is available as a Word document at the end of this page.

Endnotes
  1. Genesis 9:3–4; Leviticus 17:10–14; Deuteronomy 12:23–25. In each the concern is the blood of a slaughtered animal being eaten rather than poured out, and the reason given is that the life is in the blood and the life belongs to God. ↩
  2. Acts 15:19–29, with v. 21 giving the reason for the four provisions. On food offered to idols as a matter of conscience rather than absolute prohibition, 1 Corinthians 8:1–13 and 10:23–33, with Romans 14. ↩
  3. On pikuach nefesh, the overriding duty to save life, see Babylonian Talmud, Yoma 85a–b, deriving it from Leviticus 18:5 — that one shall live by the commandments, and not die by them. Orthodox halakhic authorities permit transfusion without controversy. ↩
  4. Matthew 12:1–14 (the sheep in the pit, and healing on the sabbath); Matthew 9:13 and 12:7, both quoting Hosea 6:6; Matthew 23:23 on the weightier matters. The healing of the woman with the flow of blood is at Matthew 9:20–22 and parallels. ↩
  5. The chronology is drawn from the Society’s own publications: the 1927 declaration on eating blood; the transfusion prohibition of the mid-1940s; the 1961 decision making acceptance a disfellowshipping offense; the vaccination position of 1921 reversed in 1952; and the organ-transplant reversals of 1967 and 1980. [Exact issue dates and page numbers to be supplied from the bound volumes.] ↩
  6. The fractions now permitted under the policy revised in 2000 include several that were forbidden on pain of disfellowshipping in the preceding decades. The argument here is not that the Society intended harm, but that a doctrine which reverses on a fatal question cannot be what it claims to be. ↩
  7. The division of blood into four “primary components” is a processing convention rather than a biological given; standard haematology texts describe plasma, cells, and a large number of derived fractions depending on the separation used. Immunoglobulin preparations are pooled from very large donor populations. ↩
  8. Ingested blood is denatured by gastric acid and digested into amino acids, iron, and other nutrients; it does not enter the circulation as blood. Transfused blood is not metabolized as food but performs the functions of the recipient’s own blood. The two acts are distinct in mechanism and in effect. ↩
  9. On the reversal permitting autologous storage: the Society has made the storing of a patient’s own blood ahead of surgery a conscience matter, having previously forbidden it outright as inconsistent with the requirement that blood be poured out. [Date and citation to be supplied from the Society’s own publication of the change.] Earlier practice had already distinguished procedures in which the blood remains in continuous circulation with the patient, such as cell salvage and dialysis, which were treated as conscience matters, from pre-operative storage, which was not. ↩

Summary

The Watchtower forbids blood transfusion as a requirement of true worship, teaching that “abstain from blood” (Acts 15:29) covers all medical use of blood. Unlike most disagreements with the Witnesses, this one can be fatal: members, including children, have died refusing transfusions. That gravity makes the soundness of the doctrine’s foundations a matter of life and death.

The texts forbid eating, not transfusing. Genesis 9:4, Leviticus 17, and Deuteronomy 12 all concern eating the blood of slaughtered animals: the blood of a killed creature was to be poured out, not consumed, in reverence for life. A transfusion is a different act — nothing is eaten, nothing is digested as food, and the donor is not killed (a mother’s blood nourishes her unborn child the same way). Reading a diet law as a ban on medicine mistakes the category.

Transfusion is more like a transplant than a meal. A man told to abstain from meat would not think a kidney transplant broke the rule. A transfusion is, in effect, a transplant of blood tissue — and the Watchtower permits organ transplants. If receiving a kidney is not “eating” it, receiving blood is not “eating” it.

Acts 15 was a pastoral provision, not a permanent ban. The council’s four requirements enabled Jewish and Gentile Christians to share a table (Acts 15:21). Paul treated one of them — food offered to idols — as a matter of conscience and love, not absolute law (1 Cor. 8; Rom. 14). “Abstain from blood,” beside “things strangled,” means do not eat blood.

Mercy outranks ritual: saving life comes first. Judaism’s pikuach nefesh — the saving of life overrides the Law — is why Orthodox Jews, stricter than any Witness about blood in food, freely permit transfusions. Jesus affirms the principle: the sheep lifted from the pit on the Sabbath, “of how much more value is a man” (Matt. 12:11–12); and twice, “I desire mercy, and not sacrifice” (Matt. 9:13; 12:7). The Watchtower itself calls mercy a “weightier matter of the Law” — but does not apply it at the dying believer’s bedside.

The doctrine keeps changing. Blood was eatable until 1927; transfusion was not a disfellowshipping offense until 1961. Vaccination was forbidden (1921) then allowed (1952). Organ transplants were “wonderful” (1949), then “cannibalism” (1967), then allowed again (1980). Serums flip-flopped repeatedly. A law that changes this often, in a matter of life and death, cannot be the unchanging command of God — and those who died before 2000 refusing fractions now permitted died for a rule later reversed.

The fractions rule is incoherent. The “four components” scheme is a centrifuge artifact, not a fact of nature; a “component” is a fraction. Forbidding components while allowing their fractions means that, finely enough divided, virtually all of blood becomes acceptable. For decades the rule also forbade storing blood — even one’s own, briefly — while permitting fractions manufactured from the pooled, stored blood of tens of thousands of donors. Witnesses may still not donate, yet may receive what donation alone makes possible.

And the storage rule has now been reversed. The Society has made the storing of a patient’s own blood before surgery a matter of conscience, after forbidding it outright for decades. That is a very large departure, and the manner of it is the point: the underlying texts have not changed a syllable. Genesis and Leviticus read today exactly as they read when the practice was banned. Only the ruling moved.

Medicine: transfusion is not eating, and sometimes only blood will save a life. Ingested blood is digested and never enters the circulation as blood; transfused blood circulates and functions as blood. “Bloodless” techniques are a real good, but in catastrophic hemorrhage no volume expander carries oxygen as red cells do — a point the Watchtower’s own lawyers have conceded.

The symbol must not devour the reality. Blood is Scripture’s great symbol of life, and the blood laws were reverence for life. To let reverence for the symbol override the life it signifies is to let the sign become an idol — the child who bears the life dies so that the substance may be honored. The Catholic Church, with Judaism and most of Christianity, finds no barrier to transfusion, praises blood donation as charity, and sees in blood given for another an image of Calvary: “This is my blood … poured out for many” (Mark 14:24). “I desire mercy, and not sacrifice.”

This article is offered as a defense of the Catholic and historical view; it is not medical advice.

For a more complete essay on this topic, download Blood and the Sanctity of Life (.docx)