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Don’t shun sunshine Vitamin

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While most of us avoid the hot sun at noon, we deprive ourselves of ‘Sunshine Vitamin’ or Vitamin D which is at its peak during that time of the day. In an interview with the Sunday Island, Head of the Department of Nutrition at the Medical Research Institute (MRI) and President of the Sri Lanka Medical Nutrition Association (SLMNA), Dr. Renuka Jayatissa throws light on the latest research which has unearthed new knowledge about this natural nutrient boosting our immunity which we often take for granted.

by Randima Attygalle

Known as ‘Sunshine Vitamin’, Vitamin D is produced by the body when the skin is exposed to sunlight. Vitamin D also functions as a hormone and every body cell has a receptor for it. Sun exposure at mid-day (from 10 a.m. to 3 p.m.) is the best way to boost vitamin D levels, says Head of Nutrition at the Medical Research Institute (MRI), Dr. Renuka Jayatissa. “Although morning sunlight was traditionally believed to be the best source of vitamin D, new knowledge confirms that 10 to 15 minutes of exposure to midday sun is the best time to make use of sunshine. The exposure becomes even more important as dietary intake of vitamin D is not sufficient.

The findings of local research speak for the changing nature of vitamin D intake, contrary to the popular belief that those from tropical nations are the most benefitted by this nature’s panacea. While the population from the Central and Sabaragamuwa Provinces are the most vulnerable to the deficiency due to the climatic patterns, the North Central Province is the least vulnerable given the hot climate of the region and the agrarian lifestyle. “The findings also reveal that 50% of adolescents of the country and nearly 95% of women are vitamin D deficient. This situation is alarming as it is a precursor to a host of other health issues including immunity problems, loss of bone density and muscle weakness,” explains Dr. Jayatissa who warns that COVID-19 pandemic has compounded the situation with restricted movement and children being home bound.

The vitamin D intake from the sun depends on the degree of exposure to sunlight. “If you wear long sleeved shirts/ blouses and trousers, it is most likely that you will get only about 10% of exposure with only your face and neck exposed. However if you wear a short-sleeved shirt/blouse and a mid-length skirt or a frock, you will get about 30% exposed,” points out the physician. “What is recommended is about 10 to 15 minutes of exposure daily. However, overweight people and those with a darker skin complexion will require more. While peak period is between 12 noon to 1 p.m. in the afternoon, ironically this is the time that most Sri Lankans tend to avoid the sun, given the humidity of the environment, says Dr. Jayatissa.

“The school interval is limited only to half an hour and this too during mid-morning. As most children may take their first meal for the day during the interval, there is hardly time for play,” observes the nutrition specialist. Recommendations have already being made to the School Committees of the Education Ministry to give children another mid-day break so that they are exposed to the peak period of sun, says Dr. Jayatissa. “Vitamin D is crucial for children on the threshold of puberty (10-15 years) as it affects growth and immunity.”

The rising elderly population in the country too calls for interventions to mitigate vitamin D deficiency as fractures are a common repercussion. Vitamin D deficiency can lead to a loss of bone density which in turn can cause osteoporosis and fractures. “With the elderly population multiplying in years, disability will be an added burden,” warns Dr. Jayatissa. Vitamin D is crucial for calcium absorption and bone metabolism. Low bone density results in loss of calcium and other minerals in bones. Older adults, especially women are at an increased risk of fractures due to this.

Risk factors for vitamin D deficiency are many. Besides lack of exposure to sunlight, having dark skin, being overweight or obese, being elderly, lack of dairy and fish in diet, excessive use of sun screen are among them. “Obesity is a risk factor for the deficiency as increased fat cells in the body require larger doses of vitamin D,” observes the physician who goes onto note that lifestyle patterns too trigger the condition. “Although those who live far from the equator are traditionally considered to be lacking vitamin D, their understanding of this drives them to be exposed to the sun as much as possible. Walking or cycling to work, walking to a cafeteria, traveling to tropical regions during summer etc. push them to bridge the gap. Ironically in our part of the world, apart from farmers and other workers such as those in the construction industry and the manual labour force, people are deprived of sun exposure.”

Since symptoms of vitamin D deficiency are often subtle, many people will not realize that they are lacking it. “However this could affect the quality of life,” remarks Dr. Jayatissa. Height gain is seriously threatened by the condition, she says. “Compared to taller communities such as the Dutch whose average height for males is about 180 cm, Sri Lankan average height is about 168 for men and 153 for women. This may even decrease in time to come, unless the situation is urgently addressed”. Sun exposure as the vitamin D booster cannot be undermined, especially because very few foods such as fish, fish liver oils, egg yolks and fortified dairy and grain products contain vitamin D, notes the nutrition specialist.

Keeping the immune system strong is one of the key roles of vitamin D. During the pandemic, this becomes even more valid as a strong immune system can fight off viruses and even bacteria that cause illness. Studies have confirmed that vitamin D can reduce the risk of respiratory tract infections. “Migraines in young people could also be a cause of the deficiency and muscle cramps in the night among the elderly could also be a strong symptom,” points out Dr. Jayatissa. Bone and back pain, impaired wound healing and even low moods are among the other symptoms.

Certain studies have also found that vitamin D can help treat skin conditions such as psoriasis and eczema. While sunshine can do wonders to your skin and body, too much of it can be risky, points out the physician. “Sun spots as a result of sunburn, skin aging, heat stroke and skin cancer are among them.” Administering vitamin D supplements should always be done on clinical advise as vitamin D toxicity entails its own dangers, concludes Dr. Jayatissa.



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Nanda Malini Ascocenda: A flower that carries the name of a legendary voice

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By Ifham Nizam

A flower named after one of Sri Lanka’s most celebrated voices has become a unique tribute to the country’s cultural heritage, with the Nanda Malini Ascocenda orchid carrying the name of veteran singer Dr. Nanda Malini.

The orchid was named in honour of Nanda Malini, recognising her outstanding contribution to Sri Lankan music and culture. She is among the country’s most acclaimed singers, with a career spanning several decades and a repertoire deeply rooted in Sri Lankan social and cultural experiences.

The striking illustration, released by the Ministry of Environment on August 21, features the veteran singer surrounded by colourful orchids and musical notes, bringing together two important elements of Sri Lankan identity — the country’s rich natural heritage and its musical tradition.

The Nanda Malini Ascocenda is particularly significant because it represents an unusual meeting point between art and nature. Orchids have long been associated with Sri Lanka’s botanical wealth, while the naming of individual hybrids after distinguished personalities provides a lasting link between the country’s natural and cultural heritage.

According to published accounts, the Nanda Malini Ascocenda was named in 2004 in recognition of the singer.

A recent profile described her as possibly the only Sri Lankan artiste to have an orchid named after her by the Orchid Circle of Sri Lanka.

Nanda Malini’s contribution to music has been recognised through numerous awards. She has also performed internationally and remains one of the most recognised figures in Sri Lankan music.

Her association with songs reflecting social realities, human emotions and national identity has given her a special place in the country’s cultural landscape.

The orchid, therefore, represents more than a botanical curiosity. It is a living tribute to an artiste whose voice has accompanied generations of Sri Lankans.

The Ministry of Environment’s presentation also serves as a reminder that conservation is not limited to forests, wildlife and ecosystems. Sri Lanka’s natural heritage is closely intertwined with its history, culture, art and the people who have enriched the nation’s identity.

As the colourful blooms of the Nanda Malini Ascocenda evoke the beauty of Sri Lanka’s orchid heritage, the name attached to them ensures that the contribution of one of the country’s most distinguished musical voices continues to live on in an entirely different form — through nature itself.

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The Best of Malkoha celebrates half a century of Sri Lankan ornithological writings

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Distinguished gathering

By Ifham Nizam

The launch of The Best of Malkoha: Half a Century of Ornithological Writings marked a significant milestone in Sri Lanka’s birdwatching and conservation history, as the Field Ornithology Group of Sri Lanka (FOGSL) celebrated its Golden Jubilee at the Faculty of Science, University of Colombo.

The book, drawn from five decades of writings published in Malkoha, the FOGSL newsletter, brings together a rich record of observations, discoveries and experiences that helped shape modern field ornithology in Sri Lanka.

The launch formed part of FOGSL’s first-ever Founders’ Day, held on August 22, a date chosen to coincide with the 76th birthday of Vidyajothi Emeritus Professor Sarath Kotagama, one of the Organisation’s founding figures and its enduring source of inspiration.

The occasion brought together academics, conservationists, naturalists, birdwatchers, students, young birders and members of FOGSL, reflecting the broad community that the organisation has cultivated since its establishment in 1976.

Section of the invitees

Biodiversity expert Dr. Rohan Pethiyagoda, delivering the Golden Jubilee Founders’ Day Oration, used the occasion to reflect on five decades of biodiversity research and conservation in Sri Lanka, while paying tribute to Professor Kotagama and the role played by FOGSL in taking birdwatching beyond a small circle of specialists.

Pethiyagoda said the organisation’s greatest achievement had been its ability to make knowledge of birds and nature accessible to ordinary people.

He recalled how, in the early 1990s, Professor Kotagama had proposed producing an affordable field guide so that birdwatching would no longer be restricted by the high cost of existing publications.

That resulted in the publication of A Field Guide to the Birds of Sri Lanka in 1994, which Pethiyagoda published and which subsequently became a bestseller.

The collaboration later produced Sri Lanka Kurulu in Sinhala, making serious bird identification and knowledge available to an even wider audience.

Pethiyagoda recalled a particularly emotional encounter that demonstrated the lasting impact of that work.

During a recent visit to Talangama to accompany Australian birdwatchers, he encountered two boys, aged around 12 and 14, carrying a battered copy of Sri Lanka Kurulu and using it to identify birds.

“I just started crying,” Pethiyagoda said, describing the moment as evidence of how knowledge had been passed from one generation to another.

He said the achievements of the past 50 years should not be underestimated. Sri Lanka has witnessed major advances in health, education, infrastructure and conservation, while the country’s protected-area network has expanded considerably.

At the same time, however, he warned that biodiversity research and conservation continue to face serious institutional challenges.

Pethiyagoda pointed to habitat fragmentation, climate change, inadequate scientific research and restrictions on field research as major challenges facing the next generation of conservationists.

He said climate change would increasingly force species to move towards cooler, higher elevations, but fragmented habitats could prevent them from making such movements.

“Our challenge now is to connect up those little fragments so that plants and animals can migrate across these landscapes,” he said, stressing the importance of restoring ecological connectivity.

He also called for greater investment in ex-situ conservation for species facing extinction and urged the establishment of conservation facilities across Sri Lanka’s different climatic zones.

Pethiyagoda placed particular emphasis on citizen science, arguing that Sri Lanka possessed an enormous reservoir of public enthusiasm for biodiversity.

He noted that more than 20,000 Sri Lankans were now involved in citizen science through platforms such as iNaturalist, with Sri Lankan users generating significant biodiversity data.

“The appetite for science, the appetite for conservation, for exploration, for discovery is there in the people,” he said.

Pethiyagoda also paid an emotional tribute to Professor Kotagama, describing him as the constant force behind much of Sri Lanka’s modern conservation movement.

“In future generations, we will talk of conservation in this country as before Kotagama and after Kotagama,” he said.

He also acknowledged Professor Kotagama’s wife, Namali, for being the “bedrock” of his household and for supporting his decades-long contribution to conservation.

The Golden Jubilee celebrations also looked back at the origins of FOGSL.

The Organisation was founded on October 10, 1976, when four passionate bird enthusiasts—the late P. B. Karunaratne, Professor S.U.K. Ekaratne, Professor Sarath Kotagama and Rex I De Silva —came together with a shared objective of making birdwatching accessible beyond the relatively exclusive group that had traditionally dominated the field.

FOGSL was subsequently formally recognised by the University of Colombo and developed as a platform bringing together birdwatchers, researchers, students, educators and nature enthusiasts.

Its philosophy was simple: one did not need an academic qualification to become a member. Enthusiasm, careful observation, recording and sharing knowledge were enough.

That principle continues to define the Organisation.

FOGSL has since become Sri Lanka’s BirdLife International partner and has played an important role in bird research, conservation, environmental education, field studies, school programmes and citizen science.

Its work has extended from research on endemic birds and migratory species to biodiversity monitoring, conservation education and programmes aimed at children and young people.

Speaking at the event, FOGSL President Professor Nihal Dayawansa said the organisation’s founding vision remained relevant even after half a century.

The Organisation, he noted, was created not simply as a birdwatching club but as a platform through which people could study and conserve Sri Lanka’s birds while inspiring the wider public to appreciate nature.

The Founders’ Day itself was described as an opportunity to honour those who established and shaped the Organisation while celebrating the contribution of generations of members.

Professor Mayuri Wijeyasinghe, Head of the Department of Zoology and Environmental Sciences, said FOGSL had given ornithology a new meaning in Sri Lanka by taking birdwatching beyond an elite community and making it accessible to ordinary people and schoolchildren.

She noted that Sri Lanka, as a tropical island with a remarkable diversity of birds and a high level of endemism, had a special responsibility to understand and conserve its avifauna.

The Dean of the Faculty of Science, Professor I.M.K. Fernando, meanwhile, said that although his own field was physics, he recognised the common foundation shared by all branches of science—curiosity.

He congratulated FOGSL on reaching 50 years and praised its contribution to research, education, student development, wetland conservation, public awareness and science-based advice on development projects.

“The work goes far beyond publishing,” he said, noting the Organisation’s lectures, school programmes, research projects and conservation initiatives.

He also paid tribute to Professor Kotagama, describing him as a legend whose influence had extended well beyond ornithology.

Professor Kotagama, speaking after receiving tributes from colleagues and friends, said the Organisation’s foundations had been laid with a belief that people could make a difference.

He stressed the importance of taking decisions based on scientific knowledge and criticised excessive bureaucratic barriers that, in his view, prevented scientists from carrying out important field research.

Reflecting on his own period as Director of Wildlife Conservation, he said he had sought to transform the Department into a scientific institution.

“For me and for us who were working in the Mahaweli environment programme at that time, we knew that if not for science, you cannot go forward in conservation,”

Professor Kotagama said, stressing that conservation required both natural and social sciences.

He recalled the challenges faced by the Department, including inadequate staffing structures and poor career progression for wildlife officers, and said efforts had been made to introduce a more professional and scientifically grounded system.

The 50-year journey of FOGSL is closely intertwined with the development of modern field ornithology in Sri Lanka.

From the early days when birdwatching was largely confined to a small group of specialists, the Organisation helped create a culture in which students, schoolchildren, amateur birdwatchers and citizen scientists could contribute to the understanding of the country’s biodiversity.

The launch of The Best of Malkoha, therefore, served as more than the unveiling of another publication. It was a record of that transformation.

The writings collected in the volume represent five decades of observations and experiences, documenting how Sri Lankan field ornithology evolved through the work of generations of birdwatchers, researchers and conservationists.

As theOorganisation enters its next half century, the message emerging from the Golden Jubilee celebrations was clear: the future of conservation will depend not only on institutions and scientists but also on an informed and empowered public.

FOGSL’s enduring motto—”Once a member, always a member”—perhaps best captures that legacy: a lifelong connection with birds, nature, scientific observation and the responsibility to protect Sri Lanka’s extraordinary natural heritage.

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Heart that beats for humanity

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Dr Rajitha Y de Silva: Healing hearts, saving lives

Dr. Rajitha de Silva

By Zanita Careem

Dr. Rajitha Y. de Silva, Consultant Cardiothoracic Surgeon and Consultant at Sri Jayewardenepura General Hospital, has built a distinguished career around one of medicine’s most demanding discipline – surgery of the heart. With his expertise, precision and pioneering spirit, he has become closely associated with the advancement of Minimally Invasive Cardiac surgery in Sri Lanka. He joined Sri Jayewardenpura General Hospital in 2013 and is today recognised as a pioneer of Minimally Invasive Cardiacs procedures in the country.

He is particulary recognised as a pioneer of mimimallyinvasive surgery in Sri lanka,with experience in procedures including minimally invasive coronary surgery and mitral valve repair. He is recognition as a leading figure in the advancement of modern cardiac surgery in the country. With years of specialised training and experience behind him, Dr de Silva has built a reputation in cardiothoracic surgery while remaining deeply conscious of the human story behind every patient who enters the operating theatre. For him, the beating heart is more than an organ to be repaired – it represents a life, a family, a future and a second chance.

His commitment to patients extends well beyond the operating theatre. Having witnessed the financial hardships faced by heart patients who desperately needed surgery but could not afford it. Dr de Silva, together with Senior Cardiologist Dr. Ruwan Ekanayake, co-founded the Heart to Heart Trust Fund.

The initiative was created with a powerful objective, that no patient should be denied life saving cardiac treatment simply because of financial difficulties.

Perhaps one of the most striking aspects of Dr de Silva’s personality is that his concern for patients does not end when the operation is over. His vision has included creating initiatives that make the difficult journey of cardiac patients more humane, giving them encouragement, dignity and hope during a period when they are often at their most vulnerable. Abayadhana was born from a simple but powerful conviction that every patient deserves a chance to live.

Through the Abayadhana programme, he represents his compassionate approach to caring for people who need not only medical attention, but also understanding, encouragement and support. What makes this initiative particularity meaningful is the personal commitment behind it. It reflects his belief that healing is not only about medicine, but about reaching out to people when they are most vulnerable.

Away from the intensity of the operating theatre, Dr. Rajitha de Silva finds another kind of joy – his passion for cricket over the years; he has taken the field in numerous matches, playing alongside and against many well known personalties.

Dr. Rajitha de Silva’s journey is guided by compassion and success anchored in humanity. From pioneering milestones in cardiac surgery to the Heart to Heart Trust Fund and the Abayadhana initiative, he has continued to give back to the people whose lives he touches. His love for cricket, his warmth and generosity reveal the heart behind the healing hands.

A surgeon by profession, a humanitarian by choice and a cricketer by heart, Dr. Rajitha’s greatest legacy may not be measured only by the operations he has performed, but by the lives he has changed, the hope he has restored and the hearts he has touched.

The trustees of the Heart to Heart Trust Fund stand united behind the mission of saving lives and giving hope. Their collective commitment helps turn the Trust’s vision into meaningful support for patients and families in need

The Executive Director, Heart to Heart Trust Fund, Shanti Fernando, plays a hands on role in turning the Trust’s vision into action, coordinating efforts, and bringing hope where it is needed.

Behind Dr. Rajitha de Silva’s demanding life is his wife, Dr. Arunie, and children, who has been his strength and support.

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