Amyotrophic lateral sclerosis affects motor neurons in the brain and spinal cord, gradually weakening muscles and impairing daily activities over time
Amyotrophic lateral sclerosis, commonly called ALS, is a serious disease that affects the brain and spinal cord. It damages motor neurons, which are the nerve cells that control voluntary muscle movements.
ALS affects voluntary movements. This means it slowly takes away a person’s ability to walk, speak, eat, and even breathe.
In North America, many people call ALS “Lou Gehrig’s disease.” It is named after the famous baseball player Lou Gehrig, who died from this illness in 1941.
The name itself describes the condition. “Amyotrophic” means loss of muscle nourishment, which leads to muscle shrinking. “Lateral” points to the area of the spinal cord where affected nerve cells are found. “Sclerosis” means hardening or scarring, which happens when nerve tissue breaks down.
ALS destroys two types of motor neurons: upper motor neurons in the brain and lower motor neurons in the spinal cord. When these neurons die, they stop sending signals to the muscles. Without these signals, muscles grow weak, shrink in size, and eventually stop functioning, which leads to paralysis.
How Common Is ALS?
Doctors consider ALS a rare condition. Only a small number of people per 100,000 develop the disease worldwide. ALS most often appears between the ages of 40 and 70, although younger and older individuals can also develop it. Research shows that men are slightly more likely than women to be diagnosed with ALS.
What Causes ALS?
Scientists still do not know the exact cause of most ALS cases. However, research has identified some important factors.
About 5 to 10% of cases are familial, which means the disease runs in families. In these cases, people inherit gene mutations such as SOD1, TDP 43, and FUS TLS. These faulty genes damage motor neurons and increase the risk of degeneration.
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The remaining 90 to 95% of cases are sporadic. In these cases, people develop ALS without any family history of the disease. Researchers believe that a mix of genetic risk and environmental triggers may play a role.
Scientists are also examining possible connections between ALS and exposure to toxins or heavy metals, military service, intense physical activity, viral infections, and immune system problems. However, researchers have not confirmed any of these as definite causes.
Early Symptoms of ALS
ALS usually develops slowly. At first, the symptoms may seem mild and similar to common health problems.
Early signs often include weakness in one arm or leg, muscle twitching, muscle cramps, stiffness, slurred speech, difficulty swallowing, and frequent tripping or clumsiness. Because ALS affects voluntary muscles, people often notice trouble during daily tasks such as walking, gripping objects, climbing stairs, or speaking clearly.
How ALS Progresses Over Time
ALS steadily worsens as more motor neurons die.
Muscle weakness extends to other parts of the body. Patients slowly lose the ability to carry out daily activities such as dressing, eating, standing, or walking. Muscles continue to shrink because they no longer receive signals from nerve cells.
As ALS advances, speech becomes slower and harder to understand. Swallowing becomes more difficult, which raises the risk of choking and malnutrition.
Eventually, the disease weakens the muscles that control breathing. Many patients need breathing support through special masks or mechanical ventilators. Respiratory failure remains the most common cause of death in people with ALS.
Even though ALS mainly affects muscles, most people keep their thinking abilities and senses. However, some may experience changes in behavior or have trouble with memory and decision making. A small percentage develop frontotemporal dementia.
How Doctors Diagnose ALS
Doctors cannot confirm ALS with a single test. Instead, they diagnose the condition by evaluating symptoms carefully and ruling out other possible diseases.
Doctors perform detailed neurological examinations and use tests such as electromyography (EMG) to measure the electrical activity of muscles. They also conduct nerve conduction studies, MRI scans, and blood and urine tests to exclude other conditions that may produce similar symptoms.
Because several neurological disorders mimic ALS, doctors must eliminate other causes before making a final diagnosis.
Treatment and Care
Currently, doctors cannot cure ALS. Treatment aims to delay the progression of the disease and improve the patient’s quality of life.
Doctors prescribe a medication called Riluzole, which can slightly slow the disease and may extend survival by a few months. They also prescribe medications to manage symptoms such as muscle cramps, excess saliva, and pain.
Researchers continue to test new drugs and experimental therapies in clinical trials.
Doctors strongly recommend a multidisciplinary approach to care. In this approach, a team of specialists works together to support the patient. Physical therapy helps maintain mobility and flexibility. Occupational therapy assists with daily tasks. Speech therapy improves communication. Nutritional support, including feeding tubes when necessary, helps prevent malnutrition. Respiratory therapy helps manage breathing problems.
Research shows that team-based care improves quality of life and may slightly increase survival.
Life Expectancy
ALS affects individuals differently. On average, patients live three to five years after diagnosis. However, some individuals survive for ten years or longer. In rare situations, patients live for decades.
Several factors, including the patient’s age at diagnosis and the way symptoms begin, influence how quickly the disease progresses.
Research and Future Developments
Scientists continue to study the genetic and biological causes of ALS. They are exploring stem cell therapy, gene based treatments, and new drugs designed to protect motor neurons. At the same time, they are developing biomarkers to help doctors detect ALS earlier.
These ongoing advances give hope that better treatments may become available in the future.
Living With ALS
Finally, ALS deeply affects both patients and their families. Emotional counseling, support groups, and palliative care services can help patients deal with the difficulties. Doctors encourage patients to discuss future medical decisions early, including breathing support and end of life care planning.
Although ALS has no cure, proper medical care and strong emotional support help patients maintain comfort, dignity, and meaningful relationships with their loved ones.
khushisikarwar is an award-winning journalist and content creator who thrives on telling stories that matter. As a key contributor to Newsisland, [she] focus on cultural commentary, providing readers with thought-provoking insights.
