Sick building syndrome (SBS) is a group of diseases connected to a person's home or place of employment. Poor indoor air quality is a major factor in sick building syndrome. Heating, ventilation, and air conditioning (HVAC) system faults are usually identified as the root of sick building syndrome. The outgassing of some building materials, volatile organic compounds (VOC), mold, inadequate ozone exhaust ventilation, light industrial chemicals used inside, and inadequate fresh-air intake air filtration have also been suggested as other causes. This article will explain to you about Sick Building Syndrome (SBS) which will be helpful in preparing the Environment Syllabus for the UPSC Civil Service exam.

Sick Building Syndrome - History

• The Sick Building Syndrome was first reported in the 1970s.
• The World Health Organization reported in 1984 that up to 30% of new and renovated buildings may have IAQ issues severe enough to result in health concerns.
• The most frequent reason is inadequate building ventilation.
• The term SBS has been around since the 1970s oil crisis. Insulation material was used by builders and building owners to reduce energy loss in office buildings. In addition, poor lighting and chemicals in carpets and paints were common.
• When you combine that with equipment like copiers and computers, as well as mold and mildew, the result is a low ventilation ratio and poor indoor air quality.

Sick Building Syndrome - Causes

• HVAC Systems: An air conditioning system that traps inside common products including paint, insulation, rigid foam, particle board, plywood, duct liners, exhaust fumes, and other chemical contaminants from indoor or outdoor sources, is the major cause.
• Chemical Contaminants from Indoor Sources: The majority of indoor air pollution is caused by sources within the building. Adhesives, carpeting, upholstery, manufactured wood products, copy machines, pesticides, and cleaning agents, for example, may emit volatile organic compounds (VOCs) such as formaldehyde.
• Chemical Contaminants from Outdoor Sources: Pollutants from motor vehicle exhausts, plumbing vents, and building exhausts (e.g., bathrooms and kitchens) can enter the building through poorly located air intake vents, windows, and other openings, for example.
• Biological Contaminants: Biological contaminants include bacterial, fungal, mold, pollen, and viral spores, all of which can lead to allergic reactions or SBS-related illnesses.
• Home-related Factors: Home-related variables can also contribute to sick building syndrome. Comparing laminate flooring to stone, tile, and cement floors, more people may be exposed to chemicals and experience SBS symptoms as a result.
• Common Causes: Common causes of this disease include noise from traffic and the increased pollution level.
• Other Causes: Wetness and associated causes, owning pets, and having cockroaches in one's home, recent renovation and new furniture purchased within the previous year were also linked to an increase in symptoms.

Sick Building Syndrome - Symptoms

• The WHO has categorized the reported symptoms into broad categories, such as mucous membrane irritation (irritation of the eyes, nose, and throat), neurotoxic effects (headaches, fatigue, and irritability), asthma, and symptoms similar to asthma (chest tightness and wheezing), skin dryness and irritation, gastrointestinal complaints, and more.
• According to a World Health Organization report, the following symptoms have been reported in those suffering from Sick Building Syndrome:
  • Irritated eyes, nose, and throat
  • Headache
  • Fatigue
  • Asthma
  • Irritability
  • Wheezing and chest tightness
  • Skin dehydration
  • Gastrointestinal issue
• The increased prevalence of illnesses in general with onset or worsening within a very short period of time—typically within a few weeks—is the key to discovery.
• The majority of the time, SBS symptoms go away shortly after the inhabitants leave a certain zone or area.
• However, some neurotoxins can have long-lasting effects that may persist even after a person exits the building.

Sick Building Syndrome - Treatment

• SBS is generally treated by lowering symptoms while minimizing exposure to the factors that contribute to them.
• Medication for allergies helps ease itching skin, nose, and eyes.
• There are numerous over-the-counter remedies, including Benadryl and Zyrtec.
• Medication for asthma may be required if you have wheezing or other breathing issues.
• These might consist of chronic drugs like leukotriene modifiers or an inhaler for sudden symptoms.

Sick Building Syndrome - Prevention

• When pollutant sources are known and control is feasible, pollutant source removal or modification is an effective approach to resolving an IAQ problem.
  • Examples include routine HVAC system maintenance, replacement of water-stained ceiling tile and carpeting, smoking bans, venting contaminant source emissions to the outdoors, storing and using paints, adhesives, solvents, and pesticides in well-ventilated areas, and using these pollutant sources during non-occupancy periods, and allowing time for building materials in new or remodelled areas to off-gas pollutants before occupancy.
• Increasing ventilation and air distribution rates can often be a cost-effective way of lowering indoor pollutant levels.
• HVAC systems should be designed to meet ventilation standards in local building codes at a minimum.
• Education and communication are critical components of both corrective and preventive indoor air quality management programmes.
• When building occupants, management, and maintenance personnel fully communicate and understand the causes and consequences of IAQ problems, they can collaborate more effectively to prevent or solve problems.
• In addition to making buildings more breathable, the following steps can be taken to avoid Sick Building Syndrome:
  • Inspections on a regular basis to detect the presence of mould or other toxins
  • Maintenance of all mechanical systems in the building
  • Plants that absorb toxins, such as sansevieria
  • Roof shingle non-pressure cleaning for algae, mould, and Gloeocapsa magma removal
  • Ozone is being used to eliminate a variety of sources, including VOCs, moulds, mildews, bacteria, viruses, and even odours.
  • Despite commercial popularity and popular belief, numerous studies have found high-ozone shock treatment to be ineffective.
  • Water-damaged ceiling tiles and carpeting were replaced.

Conclusion

The sick building syndrome is characterised by a variety of nonspecific symptoms experienced by building occupants. This sense of ill health increases sickness absenteeism and decreases worker productivity. As this syndrome becomes a more serious occupational hazard, the cause, management, and prevention of this condition must be addressed. The root cause of the rise in SBS cases in India is faulty architectural designs that result in buildings with inadequate ventilation. The National Building Code of India emphasises both natural and mechanical ventilation.

FAQs

MCQs

1. Which of the following is the most common symptom of Sick Building Syndrome (SBS)?

A) Abdominal pain
B) Headaches
C) Skin rash
D) Weight loss

2. What is a primary cause of Sick Building Syndrome (SBS)?

A) Poor ventilation
B) Physical trauma
C) Genetic factors
D) Over-exposure to sunlight

3. Which of the following can contribute to Sick Building Syndrome (SBS)?

A) High levels of outdoor pollution
B) Inadequate heating systems
C) Chemical pollutants from building materials
D) All of the above

4. How can Sick Building Syndrome (SBS) be mitigated?

A) By improving ventilation
B) By avoiding building in urban areas
C) By reducing sunlight exposure
D) By using chemical air fresheners

5. Which of the following can help prevent mold growth in buildings?

A) High humidity levels
B) Regular HVAC maintenance
C) Overheating indoor spaces
D) Inadequate air circulation

GS Mains Questions and Model Answers

Q1: Discuss the causes and symptoms of Sick Building Syndrome (SBS) and suggest preventive measures.

Answer: Sick Building Syndrome (SBS) is caused by poor indoor air quality, inadequate ventilation, and indoor pollutants like chemicals from building materials and mold. Symptoms include headaches, eye irritation, dry throat, and fatigue. Preventive measures include ensuring proper ventilation, reducing indoor air pollutants by using non-toxic materials, maintaining HVAC systems, and controlling indoor humidity to prevent mold growth. These steps can significantly reduce the risk of SBS and improve the overall indoor environment.

Q2: How does Sick Building Syndrome (SBS) impact the health of building occupants? Analyze its symptoms and provide possible solutions.

Answer: Sick Building Syndrome (SBS) impacts the health of building occupants by causing symptoms like headaches, fatigue, dizziness, and eye irritation due to poor air quality. Chemical pollutants, such as formaldehyde, and inadequate ventilation are common triggers. Solutions include improving air quality through proper ventilation, regular cleaning of HVAC systems, and using non-toxic materials during construction. Occupants may also benefit from ensuring that indoor humidity is maintained at optimal levels to avoid the growth of mold.

Q3: Evaluate the role of indoor air quality in the development of Sick Building Syndrome (SBS) and suggest measures to improve air quality in buildings.

Answer: Indoor air quality plays a critical role in the development of Sick Building Syndrome (SBS), as pollutants like volatile organic compounds (VOCs) and mold can lead to various health issues. Poor ventilation and high humidity exacerbate the problem. Measures to improve air quality include increasing natural ventilation, using air purifiers, regularly maintaining HVAC systems, and replacing chemical-laden materials with eco-friendly alternatives. Additionally, regular inspections for mold and controlling moisture levels are essential for maintaining a healthy indoor environment.

Previous Year Questions on Sick Building Syndrome (SBS)

1. UPSC CSE Mains 2019 (GS Paper 3):

Question: "Discuss the impact of poor indoor air quality on public health, with reference to Sick Building Syndrome (SBS). Suggest preventive measures to improve indoor air quality in urban buildings."

Answer: Poor indoor air quality can lead to health issues like headaches, eye irritation, and fatigue, commonly known as Sick Building Syndrome (SBS). Preventive measures include improving ventilation, using eco-friendly building materials, and regular maintenance of HVAC systems to remove pollutants. Additionally, controlling humidity and preventing mold growth are vital steps to mitigate SBS.

2. UPSC CSE Mains 2017 (GS Paper 2):

Question: "Sick Building Syndrome (SBS) is an emerging health issue linked to modern building practices. Analyze its causes and discuss the measures to combat this syndrome in urban buildings."

Answer: SBS is primarily caused by poor ventilation, indoor air pollutants, and the use of chemical building materials. Modern buildings often have sealed environments with inadequate airflow, leading to the accumulation of pollutants. Measures to combat SBS include enhancing ventilation systems, using non-toxic materials, and ensuring proper maintenance of HVAC systems. Regular cleaning and humidity control are also essential in preventing the growth of mold.