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

Image Credit: Canva

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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Is Chest Pain The Only Sign Of Heart Disease?

Updated Apr 12, 2026 | 06:00 PM IST

SummaryMost people think that only chest pain and tightness are signs of heart disease. However, there are several other silent symptoms. This, and many other myths associated with heart diseases, was debunked by a cardiologist.
chest pain

Not just chest pain, but even jaw pain can be associated with heart disease. (Photo credit: iStock)

There are many myths linked to heart health that can mislead people and prevent them from seeking timely help. This article helps to debunk the myths and keep the heart healthy. It is time to prioritize heart health. Dr Rahul Gupta, Director of Interventional Cardiology and Structural Heart Program, Gleneagles Hospital, Parel, Mumbai, spoke about the common myths about heart disease and listed the facts as well.

Heart problems are commonly seen in people of all age groups. However, heart health is often surrounded by myths and misconceptions that can lead to confusion and poor lifestyle choices in people. So, heart health depends on multiple factors, including diet, activity, stress, and overall lifestyle, and not just one or two habits. Here, the expert helps to debunk the myths associated with heart health and improve the quality of life.

Dispelling myths surrounding heart health

Myth 1: Only older people are at risk of heart problems

Fact: People commonly believe that heart problems can only happen in old age. However, currently, a large number of youngsters aged 25-35 are also struggling with heart issues such as heart attacks and heart failure because of stress, unhealthy diets, and lack of exercise. So, heart problems are not limited only to older people. Anyone, irrespective of their age, can suffer from them. Hence, there is a need of the hour to go for regular heart check-ups and to initiate timely treatment for heart problems.

Myth 2: If you are fit, your heart is SAFE

Fact: So, being physically active is important, but it does not reduce the chances of heart problems. Be attentive to the family history, genetics, and other factors such as high cholesterol or even stress. So, go for cardiac screening on a yearly basis to know the status of your heart health. Discomfort in the arms, jaw, or back and light-headedness can also mean that your heart is in danger.

Myth 3: Heart disease is only seen in men

Fact: Shockingly, heart disease also causes higher morbidity and mortality rates in women. The symptoms seen in women linked to heart disease are dizziness, palpitations, and even giddiness. Hence, women should also focus on their heart health. Stay alert, stay safe!

Your heart health matters. By understanding the facts and making informed choices, it is possible for everyone to protect their heart and overall well-being.

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Beyond Medicines: How DBS Surgery Is Helping Parkinson’s Patients Reclaim Movement and Independence

Updated Apr 12, 2026 | 08:00 PM IST

SummaryDoctors have to be very careful about whom they recommend DBS to. It is usually for people who take medicines for Parkinson's. The medicines do not always work well. The doctors, surgeons, and therapists all have to work to make sure everything goes well.
Beyond Medicines: How DBS Surgery Is Helping Parkinson’s Patients Reclaim Movement and Independence

Credit: Canva/ Cleveland Clinic

Parkinson's disease is a condition that affects people with Parkinson's ability to move and do things on their own. People with Parkinson's disease will find that it gets worse over time. At first, medicines can help people with Parkinson's disease.

After a while, these medicines might not work as well as they used to for people with Parkinson's disease. Some people with Parkinson's disease might even feel bad because of the medicines they are taking for Parkinson's disease.

That is when doctors might suggest something called Deep Brain Stimulation, or DBS for short, to people with Parkinson's disease. Deep Brain Stimulation is a kind of help for people with Parkinson's disease.

What Is DBS?

DBS is a kind of surgery where doctors put wires into the brain. These wires are connected to a device that is put under the skin in the chest. This device sends messages to the brain to help it work better. The brain can get mixed up. Cause people to shake or move slowly. The messages from the device help fix that.

One of the things about DBS is that it can help people move better when medicines are not working well. People might shake less. Feel less stiff. They might even be able to take medicine, which can be good because it can reduce the side effects.

It is very important to remember that DBS is not a cure for Parkinson's disease. It does not make the disease go away. It can help people do things on their own again. Many people who have DBS say they can eat, walk, and dress themselves better. These are things that can be very hard for people with Parkinson's disease.

DBS Promising For Parkinson's Patients

Doctors have to be very careful about whom they recommend DBS to. It is usually for people who take medicines for Parkinson's disease. The medicines do not always work well. The doctors, surgeons, and therapists all have to work to make sure everything goes well.

Exciting things are happening with DBS. Soon, there might be devices that can adjust on their own to help people more. This means that people with Parkinson's disease might have more hope for feeling better.

DBS is a step forward from just taking medicines. It helps people take control of their bodies again. It helps them feel more independent and dignified. That can make a difference in their daily lives. Parkinson's disease is a hard condition to deal with, but with DBS, people might feel like they can do things again. They might feel like they have their life back. DBS is a promising treatment for people with Parkinson's disease.

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Not Diabetes or Obesity: Expert Says Chronic Stress Is The New Lifestyle Disease

Updated Apr 12, 2026 | 04:00 PM IST

SummaryDiabetes is recognised as a lifestyle disorder, but chronic stress is just as serious. According to an expert, it should be classified as a lifestyle disease for a number of reasons. Find out.
Chronic stress

Chronic stress raises cortisol levels in the body. (Photo credit: iStock)

Work, school, competition—stress appears to be inevitable these days. Across age groups, many are dealing with it in some form or the other, but unfortunately stress never stops at just headaches or fatigue. It has direct effects on an individual's health through causing disease (such as cardiovascular problems); it also has indirect effects on health by negatively influencing other health behaviors such as physical activity and sleep. It is also vital to note that stress is one of the leading health risks for people in the work environment. Healthcare professionals are advised to consider both major stressors and those that occur regularly. Further discussion about stress reduction strategies is provided.

Dr Anshuman Kaushal, Director of Robotic GI, Minimal Access & Bariatric Surgery at CK Birla Hospital, Gurugram, in an interview with Health and Me, spoke about the long-term effects of chronic stress and why it can be termed a lifestyle disorder.

Mechanisms of Chronic Stress

Exposure to certain stressors activates the HPA axis, and as a result, adrenaline and cortisol are released. While these hormones play a crucial role in survival during emergencies, they can result in serious health problems when continuously present in the body. Some of the most common consequences of stress are low immunity, insulin resistance, or inflammation. It can over time result in hypertension or heart disease.

Lifestyle as the Main Cause

With growing rates of urbanisation, competitive workplaces, financial issues, and the development of technology leading to a permanently accessible Internet, the boundaries between working time and time for rest have been blurred entirely. Moreover, an insufficient amount of sleep, poor sleeping habits, and a sedentary lifestyle cause stress as well. The young generation in India has become victims of stress-related disorders the most.

Identification of the Symptoms

One of the major challenges when identifying chronic stress cases lies in the subtlety of the condition. The list of symptoms includes constant fatigue, irritability, concentration issues, headaches, tight muscles, and insomnia. Other symptoms of the condition include gastrointestinal disorders such as acid reflux, bloating, and loss of appetite that are hardly ever associated with stress.

Long-term effects of stress

Chronic stress may appear harmless, but the truth is quite contrary. When an individual is stressed for too long without controlling it, it may result in anxiety disorders like depression. Physiological side effects of stress are:

  1. Poor immunity
  2. Inflammation
  3. Obesity
  4. Diabetes
  5. Weakened memory
  6. Mood swings

What makes chronic stress a lifestyle disease?

While most lifestyle disorders are caused by environmental factors and behavioural alterations, it can be termed a lifestyle disease. These disorders are progressive and require constant intervention in the form of medication or meditation.

Managing chronic stress

Doctors say that it takes a comprehensive strategy to reduce cortisol levels in the body and uplift mood. For instance, workouts like weight training or yoga are known to increase levels of happy hormones, thereby reducing stress. Breathing exercises and meditation, too, have a positive impact on mental health. Experts recommend combining them with nutrition, proper sleep, and socialising.

Early diagnosis matters

Chronic stress is not just a symptom of modern life but also a key health problem. Recognising it as a health issue and addressing it helps combat the long-term consequences well in time. And with continued changes in lifestyle habits and patterns, a lifestyle disease like chronic stress can also be brought under control for the better.

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