By Dr. Sajid Abbasi
Some people object that Islam does not show mercy toward animals; rather, it encourages slaughtering and eating them, especially during Eid al-Adha, when animal sacrifice is considered an act of worship. This objection is usually raised without a complete understanding of Islamic teachings. The reality is that Islam teaches compassion, kindness, and humane treatment toward animals in a way rarely found in many ancient religions and civilizations. At the same time, Islam also clarifies that the purpose of human creation is not the same as that of animals. Human beings were honoured as the noblest of creation, and many creatures were subjected for their benefit.
A study of the Qur’an and the sayings of the Prophet ﷺ shows that Islam neither permits the pointless killing of animals nor cruelty toward them. Rather, it allows the use of animals only for genuine needs, food, and human benefit – and even then, within clear moral principles and with mercy.
Since the beginning of human civilization, there have been two basic sources of food for mankind: plant-based food such as grains, vegetables, and fruits, and animal-based food such as milk, meat, and other animal products. Both have always played an important role in human life. The Qur’an also mentions them as blessings. Allah says: “Then by means of this water We produced for you gardens of date palms and grapevines in which you have abundant fruits, and from them you eat. And We produced for you the tree that grows from Mount Sinai, producing oil and seasoning for those who eat. And indeed, there is a lesson for you in cattle: We give you drink from what is in their bellies, and you derive many other benefits from them, and from them you eat. And upon them and upon ships you are carried.” (Surah Al-Mu’minun 23:19–22)
These verses clearly show that both plants and animals were created for human nourishment and benefit.
Islam recognises that a balanced diet is necessary for human physical health. Modern science also acknowledges that protein, iron, vitamin B12, and several other essential nutrients are efficiently obtained from meat and animal-based foods. Although plant-based food is important, completely avoiding animal food is not always suitable for human beings especially in societies where diets consist mainly of rice, flour, and starches. In such cases, the likelihood of nutritional deficiencies increases.
Possible Deficiencies Caused by the Complete Elimination of Meat
- Protein Deficiency
Meat is an important source of high-quality protein. Protein is essential for muscle development, body growth, wound healing, hormone and enzyme production, and strengthening the immune system. If a person does not consume sufficient legumes, dairy, eggs, or other alternatives, weakness, muscle wasting, fatigue, and poor physical growth may occur, especially in children.
- Vitamin B12 Deficiency
Vitamin B12 is found primarily in animal foods. Its deficiency can lead to anaemia, numbness in the hands and feet, memory problems, neurological disorders, and severe fatigue. These issues are especially common among strict vegans.
- Iron Deficiency
The iron found in meat is more easily absorbed by the body than plant-based iron. Iron deficiency can cause anaemia, dizziness, weakness, and impaired mental performance in children.
- Omega-3 and Essential Fats
Fish and certain meats contain beneficial fatty acids that support the brain, heart, eyes, and nervous system. Their deficiency may contribute to depression, sluggishness, and some heart-related problems.
- Zinc and Other Mineral Deficiencies
Meat is an important source of zinc, selenium, and other minerals. Zinc deficiency can weaken the immune system, slow wound healing, impair children’s growth, and cause hair loss.
- Effects on Children and Pregnant Women
Children, the elderly, and pregnant women require additional nutrition. If their diet is not balanced, children’s physical and mental development may suffer, pregnant women may experience weakness and anaemia, and the health of newborns may be affected.
- Problems Caused by Excessive Dependence on Carbohydrates
In some societies, meat consumption is low while rice, flour, sweets, and starches dominate the diet. When dietary balance is disturbed, obesity, insulin resistance, diabetes, and poor metabolism become more common.
Islam’s Balanced Approach
Islam neither promotes excessive meat consumption nor demands complete abstinence from meat. The Qur’an presents the concept of Halal and Tayyib food – meaning food that is lawful, pure, wholesome, balanced, and beneficial to health.
The life of the Prophet Muhammad ﷺ shows that he consumed meat in moderation. He also discouraged overeating.
If someone chooses not to eat meat but maintains a scientifically balanced and nutritious diet, they may remain healthy. However, if proper alternatives are not used, deficiencies in protein, vitamin B12, iron, zinc, and essential fatty acids may arise, leading to various physical and mental illnesses. Islam therefore teaches moderation and balance – neither excess nor neglect.
Medical experts around the world also point out that diets based mainly on carbohydrates, sugar, and starch can increase the likelihood of diabetes and other diseases. In India, one of the major causes of diabetes is an imbalanced diet combined with physical inactivity and excessive consumption of rice and sugary foods.
Is Slaughtering Animals Cruelty?
The question arises: if animals are used for food, is slaughtering them an act of cruelty? Islam says that cruelty means causing unnecessary suffering to a living being. But if an animal is slaughtered for human nourishment in a way that minimises pain, then this is part of the natural order.
The entire ecological system of the world is based on a food chain in which one creature benefits from another. If all animals were left completely unchecked and their reproduction uncontrolled, their numbers could grow disproportionately. Grazing lands could disappear, crops could be destroyed, sick and old animals might die painful deaths, and environmental balance could collapse. Islam regulates the use of animals through an organised, ethical, and compassionate system.
The Effects of Completely Eliminating Meat Consumption on the Food Chain and Ecosystem
Allah created this universe according to a balanced system. The Qur’an repeatedly draws attention to the fact that everything in creation exists in perfect balance. Humans, animals, plants, water, land, and air are all interconnected. In modern language, this interconnected system is called the ecosystem.
The Qur’an says: “And He created on the earth for you, things of various kinds.”
And: “And He created livestock; in them there are benefits for you.”
These verses make it clear that animals are not purposeless creatures. Rather, they are an important part of human life, food systems, economies, and the environment.
What Is the Food Chain?
The food chain is the natural system in which:
- Plants produce food using the sun’s energy,
- Animals consume plants,
- Humans obtain food from plants and certain animals,
- And waste and remains eventually return nutrients to the soil.
Thus, the entire system of life depends on mutual interaction. If one major component is entirely removed, the balance may be disrupted.
Possible Consequences of Completely Banning Meat Consumption
- Uncontrolled Growth of Livestock
If humanity completely abandoned the use of animals, controlling the population of camels, cows, goats, sheep, and chickens would become difficult. Animals naturally reproduce rapidly. Without a system of regulated use:
- Grazing lands could become insufficient,
- Crops could be damaged,
- Pressure on water and food resources could increase,
- And ecological imbalance could result.
- Suffering of Sick and Old Animals
Islam does not want animals to suffer. If animals were never slaughtered, many would become sick, weak, and old, eventually dying more painfully. Even in nature, animals rarely die peacefully; many perish from hunger, disease, or attacks by other animals. Islamic slaughter is, in fact, a regulated and relatively less painful method.
- Impact on Agriculture
Livestock are not kept only for meat. They also:
- Provide milk,
- Produce manure,
- Support rural economies,
- And sustain the livelihoods of millions.
If meat consumption completely disappeared, many farmers would stop raising livestock, leading to reduced organic fertilizer, higher agricultural costs, and economic damage to rural communities.
- Pressure on Forests and Land
If the entire world adopted a purely plant-based diet, more agricultural land would be needed. Forests might have to be cleared, and water consumption could increase, because plant agriculture also requires land and resources. Therefore, the issue is not simply not eating animals, but maintaining the balance of the entire ecosystem.
- Disruption of the Natural Predatory System
Allah Himself created a food chain in nature:
- Lions eat deer,
- Birds eat insects,
- Fish consume smaller creatures.
Since we cannot alter this natural system, why should humans alone be forbidden from participating in it? If all humans depended solely on plants, the natural balance would be severely affected. This system is part of Allah’s wisdom. Islam, being the religion revealed by the Creator of all beings, provides balanced, lawful, and wholesome guidance that perfectly aligns with human nature.
The Qur’anic Perspective
The Qur’an states that animals were created for human benefit: “And in livestock there are many benefits for you, and from them you eat.”
It also says: “It is Allah who created livestock for you, so that you may ride some of them and eat others.”
These verses show that benefiting from animals is natural and lawful, provided there is no cruelty or injustice.
Islam’s Principle of Moderation
Islam neither teaches merciless meat consumption nor unnatural extremism. Its principle is moderation. Islam:
- Specifies which animals are lawful,
- Prohibits cruelty and starvation of animals,
- Teaches mercy during slaughter,
- And forbids wasteful or recreational hunting.
Allah made human beings responsible caretakers and taught them to show mercy toward animals.
The Wisdom Behind Sacrifice
Sacrifice teaches people to submit their desires to the command of Allah, to show gratitude for His blessings, and to recognise the rights of the poor in their wealth by feeding them.
The sacrifice performed during Eid al-Adha is an expression of gratitude before Allah. While commanding the rituals of Hajj, Allah says: “And mention the name of Allah on the appointed days over the livestock He has provided for them. Then eat from them and feed the poor and needy.” (Surah Al-Hajj 22:28)
Since Allah created these lawful animals for human benefit, this act of gratitude was prescribed: animals are slaughtered during the Day of Sacrifice (10th Dhul Hajjah) and the days of Tashreeq (11th to 13th Dhul Hajjah), people eat from them, and the poor are also fed.
Mentioning Allah’s name before slaughter signifies that only by Allah’s permission may a living creature be slaughtered. Without the Creator’s permission, taking life would not be lawful. This is why sacrifice is an act of worship, not cruelty.
The sacrifice of Eid al-Adha is a practical lesson in obedience, sacrifice, and selflessness. It commemorates the tradition of Prophet Ibrahim (Abraham), who showed willingness to sacrifice his son in obedience to Allah’s command.
The Qur’an says: “Neither their meat nor their blood reaches Allah, but your piety reaches Him.”
This verse clearly shows that the real purpose of sacrifice is piety, obedience, gratitude and seeking Allah’s pleasure. This is why a significant portion of sacrificial meat is distributed among the poor and needy, promoting compassion and social equality. Many poor families are otherwise unable to afford meat because of rising costs.
Islam’s Teachings on Mercy Toward Animals
Islam declares kindness to animals to be an act of righteousness. The Prophet ﷺ said: “The Most Merciful shows mercy to those who are merciful. Show mercy to those on earth, and the One above the heavens will show mercy to you.”
This teaching applies to all living beings.
One narration mentions a woman who deserved punishment because she imprisoned a cat and left it hungry. Another narration tells of a man who was forgiven simply because he gave water to a thirsty dog. These teachings prove that Islam is not a religion of cruelty toward animals, but a religion of mercy.
Islamic Principles of Slaughter
Islam teaches mercy and humanity even at the time of slaughter. The Prophet ﷺ said: “Allah has prescribed excellence in all things. When you slaughter, slaughter well. Sharpen your blade and relieve the suffering of the animal.”
Islamic slaughter includes the following principles:
- The knife should be sharp to minimise pain,
- An animal should not be slaughtered in front of another animal,
- The animal should not be kept hungry or thirsty,
- Slaughter should be swift and done properly,
- And the blood should be drained thoroughly so the meat remains healthy and pure.
Modern studies indicate that draining blood is beneficial because blood may contain harmful substances and microorganisms.
In Islamic slaughter, the major blood vessels of the neck are cut:
- The trachea,
- The oesophagus,
- The carotid arteries,
- And the jugular veins.
These are the vessels responsible for transporting blood to and from the brain and body. Once they are severed, blood rapidly exits the body.
The heart does not stop immediately after slaughter. Even though the brain’s connection is cut off, the heart continues beating for several moments or sometimes minutes, pumping blood out of the body. When oxygen supply to the brain stops, the animal quickly loses consciousness, and awareness and sensation of pain disappear.
The twitching or movements observed after slaughter are neurological and muscular reactions that also help force blood out of the body. In this way, blood is largely removed from the meat except for what remains in tiny vessels.
Islam prohibits the consumption of blood because it may contain toxins, germs, bacteria, and bodily waste materials. This is why Islamic slaughter emphasises draining blood so the meat remains cleaner, purer, and healthier. Allah says in the Qur’an: “Forbidden to you are carrion, blood, and the flesh of swine.” (Surah Al-Ma’idah 5:3)
Lawful Animals and Human Health
The Qur’an says: “O believers! Do not forbid the pure and lawful things Allah has made lawful for you.”
Therefore, if Allah has declared certain animals lawful, human beings do not have the authority to declare them absolutely forbidden based merely on personal philosophy or preference. Islam did not declare every animal lawful; rather, only wholesome and beneficial animals were permitted. Carrion, blood, pork, and harmful substances were prohibited.
This shows that the Islamic dietary system is based on health, purity, and moderation. The Qur’an pairs the concept of Halal with Tayyib, meaning wholesome and pure. This means that proper food must benefit both the body and the soul.
In light of the Qur’an and Sunnah, it becomes clear that human beings do not have the right to prohibit what Allah has made lawful. To this day, no conclusive scientific evidence has proven that all foods declared lawful by Allah are inherently harmful to human health. The real problem lies in excess, unhealthy lifestyles, and unbalanced diets.
Islam is a religion of moderation, mercy, purity, and living in harmony with human nature – and sacrifice of animals is one of the great manifestations of this natural and spiritual system.
