What Is Alkaptonuria? The Rare Disease That Turns Your Pee Black – Here’s Why

Updated Feb 7, 2025 | 08:00 AM IST

SummaryAlkaptonuria is a rare genetic disorder that causes black urine due to homogentisic acid buildup, leading to joint pain, cartilage damage, and skin discoloration. It has no cure but can be managed.
What Is Alkaptonuria? The Rare Disease That Turns Your Pee Black – Here’s Why

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A condition, known commonly as "black urine disease" or Alkaptonuria is a rare genetic disorder involving protein metabolism, and it has its root in the mutation of the homogentisate 1,2-dioxygenase gene, which in turn causes homogentisic acid accumulation in the body. The appearance of dark urine after exposure to air is due to this kind of accumulation; however, a variety of symptoms can be expected, such as joint stiffness, changes in pigmentation, and other long-term health complications. Although the prevalence has been estimated to be between 1 in 250,000 and 1 in 1 million people in the United States, its effects are indeed high on those affected.

Alkaptonuria is an autosomal recessive disease, meaning that the child must inherit a defective copy of the HGD gene from both parents. If both parents are carriers, their offspring have a 25% chance of inheriting two faulty genes and developing alkaptonuria. The condition is genetic but is often not diagnosed for years because it progresses slowly and its early symptoms appear to be harmless.

Symptoms of Alkaptonuria

The most characteristic and common initial symptom of alkaptonuria is dark urine. The reason for this is due to the fact that excess HGA is excreted in the urine and upon oxidation in the presence of air, it gives the urine a brown or black color. Though it is often considered cosmetic, the long-term accumulation of HGA within the connective tissues produces more complicated health problems.

Progressive joint pain and stiffness: The accumulation of HGA in cartilage leads to early-onset osteoarthritis, making movement increasingly difficult over time.

Skin and eye pigmentation changes: Affected individuals may develop bluish or grayish discoloration of the sclera (white part of the eye) and the skin, particularly in areas exposed to friction.

Cardiovascular and respiratory problems: With age, HGA accumulation can lead to valve calcifications in the heart and stiffening of connective tissues in the respiratory tract, which can cause problems in middle and old age.

Decreased mobility and spinal problems: The spine may become stiff and painful due to chronic cartilage degeneration.

These symptoms usually begin to manifest during adulthood, leading to severe complications in a person's 40s or 50s and significantly affecting the quality of their life.

How is Alkaptonuria Diagnosed?

Because of its rarity, alkaptonuria is often mistaken or overlooked early in life. However, there are several ways to confirm the condition:

Urine Testing: The gold standard in the diagnosis is the testing of urine samples for high levels of homogentisic acid via gas chromatography. In case of oxidation, which changes the color of urine to black, it is indicative of alkaptonuria.

Genetic Testing: Confirmatory genetic testing reveals mutations of the HGD gene to diagnose the condition conclusively.

Blood Tests: High levels of HGA in the blood can be used as further evidence.

Imaging Studies: X-rays and MRIs will expose cartilage and joint damage characteristic of alkaptonuria.

Management of Alkaptonuria: Is There A Cure?

At present, there is no cure for alkaptonuria; however, various treatment approaches can reduce its symptoms and slow the disease's progress:

Nitisinone Therapy: Nitisinone is a drug that inhibits the production of HGA. It has been shown to reduce HGA levels and slow tissue damage. However, it needs to be taken under close medical supervision because of potential side effects.

Low-Protein Diet: Since HGA is a byproduct of protein metabolism, reducing protein intake—especially foods rich in tyrosine and phenylalanine—may help decrease HGA production.

Pain Management: OTC pain relievers and anti-inflammatory medications can be used to relieve joint pain and stiffness.

Physical Therapy: Exercise regularly, as it may improve mobility and strengthen muscles, thus reducing strain on affected joints.

Surgical Interventions: Most people with alkaptonuria develop severe osteoarthritis necessitating joint replacement in their old age. Also, some may require heart valve replacement surgery if cardiovascular complications develop.

Life with Alkaptonuria

Although alkaptonuria is not fatal, it severely affects the quality of life. The progressive deterioration of the joints and associated symptoms can make everyday activities difficult, requiring lifestyle changes and medical interventions. The disease may cause premature aging of the joints, requiring walking aids and mobility assistance earlier than expected.

Ongoing research will continue to work on improving the treatment options by focusing on gene therapy and alternative enzyme replacement therapies. However, because of its rarity, the clinical trials and research remain sparse.

As genetic research advances, more hope for better management and possible curative approaches for alkaptonuria exists. Scientists are searching extensively for enzyme replacement therapies and innovative drugs that can target the root cause of the disorder. Being aware and being diagnosed early helps individuals better their condition and ultimately have better long-term health outcomes.

Alkaptonuria is a striking example of how one gene mutation can have widespread effects on the body. Though still a rare and often misunderstood condition, growing awareness and advances in treatment are paving the way for better care. If you or a loved one suspect symptoms of alkaptonuria, it is essential to seek early diagnosis and medical guidance to manage the disease effectively and preserve quality of life.

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Can Fitness Hide Lung Cancer? Why Even Active People Shouldn't Ignore Symptoms

Updated Aug 1, 2026 | 11:00 PM IST

SummaryRegular exercise does not eliminate lung cancer risk, making persistent symptoms like cough, breathlessness, or chest pain important warning signs that should never be ignored.
Can Fitness Hide Lung Cancer? Why Even Active People Shouldn't Ignore Symptoms

Credit: AI

Many people assume that if they exercise regularly, eat healthy, and stay active, they are naturally protected from serious illnesses like lung cancer. It is a comforting belief but unfortunately, it is not entirely true. While a healthy lifestyle lowers the risk of many diseases and improves overall well-being, it does not make anyone completely immune to lung cancer.

This misconception often leads to another problem: delayed diagnosis. When someone who has never smoked or is physically fit develops a persistent cough, unusual tiredness, or breathlessness, they may dismiss these symptoms as a lingering cold, seasonal allergies, or simply overexertion after a workout. Family members may do the same, assuming that someone who looks healthy couldn't possibly have a serious lung condition. As a result, valuable time may be lost before medical help is sought.

Being Fit Doesn't Eliminate Lung Cancer Risk

Some forms of lung cancer, especially adenocarcinoma, develop in the outer parts of the lungs, where they may grow silently for months before causing noticeable symptoms.

Also read: The 'Safer Than Smoking' Myth? Doctors Warn Vaping May Carry Its Own Lung Cancer Risks

Warning Signs That Should Never Be Ignored

One of the challenges is that active individuals often have better lung capacity and stamina, allowing their bodies to compensate for early changes. This can make the warning signs subtler in the beginning.

A persistent cough, breathlessness during activities that once felt easy, unexplained fatigue, chest discomfort, hoarseness of voice, recurrent chest infections, coughing up blood, or unexplained weight loss should never be ignored, especially if these symptoms last for more than two to three weeks.

Also read: Bryan Johnson's New 2.6M Women's Health Project Centers on Girlfriend's Menstrual Blood

Early Detection Can Save Lives

The encouraging news is that early detection can make a significant difference. Recognizing persistent symptoms and seeking medical evaluation promptly can lead to earlier diagnosis, when treatment is often more effective. Depending on an individual's symptoms and risk factors, a doctor may recommend investigations such as a chest X-ray or CT scan.

Staying physically active remains one of the best decisions a person can make for their health. Exercise strengthens the heart, improves lung function, and reduces the risk of several chronic diseases.

But fitness should never create a false sense of security. The body has its own way of asking for attention, and listening to those signals no matter how healthy a person feels can sometimes be the most important step toward protecting long-term health.

By Dr. Jayesh Prajapati, Senior Consultant Surgical Oncology, Sterling Hospital, Ahmedabad

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World Breastfeeding Week: How The First 1,000 Days Of Breastfeeding Shapes A Child's Health For Life

Updated Aug 1, 2026 | 09:00 PM IST

SummaryBreastfeeding during the first 1,000 days supports a child's immunity, brain development, growth, and long-term health, laying the foundation for lifelong well-being.
World Breastfeeding Week: How The First 1,000 Days Of Breastfeeding Shapes A Child's Health For Life

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The first 1,000 days, right from pregnancy until a child's second birthday, are a crucial window for growth and brain development. Hence, understand that breastfeeding during this period plays a key role in building lifelong health and immunity for the child. Read on to know more about how breastfeeding tends to shape the child’s health for life.

Why the First 1,000 Days Matter?

The first 1,000 days of a child's life, right from conception until the age of two years, is often a critical time for growth and development. During this time, brain development happens rapidly, organs mature, and even the immune system tends to become stronger.

Good nutrition tends to have a huge impact on the child’s physical health, learning ability, and even overall well-being. Breastfeeding helps the baby to get enough nutrition. Breast milk also protects babies from infections and tends to support healthy growth.

Also read: Breastfeeding Moms Are Mixing Formula & Breast Milk-Should You?

How Breastfeeding Shapes Lifelong Health?

Breastfeeding involves a correct balance of proteins, healthy fats, vitamins, minerals, and antibodies that a growing baby needs. Breastfeeding strengthens the baby's immune system. Babies who are breastfed will be able to prevent diarrhoea, ear infections, and respiratory illnesses.

Important nutrients such as DHA and other healthy fats help in the growth of the brain and nervous system, which may improve learning and cognitive development later in life. Did you know? Breastfeeding is important and even helps to reduce the chances of obesity, type 2 diabetes, and certain allergies as children grow older.

It encourages healthy weight gain during infancy and helps develop better eating habits. Breastfeeding is also beneficial for mothers. It helps the uterus return to its normal size after childbirth, reduces bleeding after delivery, and may lower the risk of breast and ovarian cancers. Breastfeeding creates a strong emotional bond with their baby through close skin-to-skin contact.

Also read: Breastfeeding Week: Experts Share How Breastfeeding Helps You and Your Child?

Tips for Successful Breastfeeding

  • Start breastfeeding within the first hour after birth whenever possible and don’t discontinue without the doctor’s knowledge.
  • Exclusively breastfeed for the first six months without giving water or other foods unless advised by a doctor.
  • Continue breastfeeding the child along with giving nutritious complementary foods until two years of age.
  • Feed the baby without fail whenever they show signs of hunger instead of following a strict routine.
  • Eat a balanced diet, drink enough fluids, and get adequate rest to support milk production.
  • Seek help from a doctor or lactation consultant if breastfeeding challenges arise.

Hence, follow these tips and ensure proper breastfeeding for the child.

By Dr Nishant Bansal, Consultant - Paediatrician & Neonatologist, Motherhood Hospitals, Noida

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'I Wish Every Patient Knew This Before Their Lung Cancer Diagnosis'- Lessons From An Oncologist

Updated Aug 1, 2026 | 07:00 PM IST

SummaryAn oncologist shares key insights every patient should know about lung cancer, emphasizing early detection, symptom awareness, risk factors, and informed decisions that can improve outcomes.
"I Wish Every Patient Knew This Before Their Lung Cancer Diagnosis"- Lessons From An Oncologist

Credit: AI

Patient should not be afraid to ask what type of lung cancer, Stage and spread of disease whether it has spread and what is stage of disease, This information helps direct treatment decisions and provides insight into the future prospective of disease status .

The patient should self designate a Trustee who will take care of her Medical Records , fixing up appointment and be responsible for medication administration. A diagnosis of lung cancer can be shocking and worrisome, but knowing what to expect can help patients make more informed choices.

The first lesson is that lung cancer can be very different from patient to patient. Treatment depends on the type, stage as well as genetic changes and health.

Ask About The Exact Diagnosis

Molecular Testing Can Change Treatment

For lung cancer patients some patients will require testing the tumour for specific Molecular markers which help in deciding type of immunotherapy . Before beginning treatment, patients should be asked for if they have had the appropriate tests done for fitness before therapy.

Treatment Is Not Always Just Chemotherapy

Modern lung cancer care may involve surgery, radiation therapy, chemotherapy, targeted medicines and immunotherapy, often in various combinations. The best treatment will depend on the type of cancer and the health of the patient.

Also read: What Is Driving India's High Burden Of Childhood Cancers?

Symptoms and Side Effects Should Be Reported

Patients should not quietly accept worsening shortness of breath, pain, fever, severe weakness, poor appetite or side effects of treatment. Early communication can assist doctors in managing complications and maintaining quality of life.

Supportive Care Matters Too

Palliative or supportive care is not just for the end of the cancer course. It can be given along with cancer treatment to help manage symptoms, improve emotional wellbeing and increase everyday comfort.

Above all, I do not think that a diagnosis means there are no options. The treatment of lung cancer is changing rapidly and the results can vary greatly from patient to patient. Ask questions, clarify, and understand treatment plan and when appropriate, get a second opinion before making major decisions.

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