{"id":92374,"date":"2024-03-22T22:52:30","date_gmt":"2024-03-22T20:52:30","guid":{"rendered":"https:\/\/www.africa-press.net\/zimbabwe\/all-news\/obesity-and-hiv-semaglutide-should-be-rolled-out-in-sa-says-dr-nomathemba-chandiwana"},"modified":"2024-03-23T01:58:38","modified_gmt":"2024-03-22T23:58:38","slug":"obesity-and-hiv-semaglutide-should-be-rolled-out-in-sa-says-dr-nomathemba-chandiwana","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/zimbabwe\/all-news\/obesity-and-hiv-semaglutide-should-be-rolled-out-in-sa-says-dr-nomathemba-chandiwana","title":{"rendered":"Obesity and HIV: Semaglutide should be rolled out in SA, says Dr Nomathemba Chandiwana"},"content":{"rendered":"

Africa-Press – Zimbabwe. <\/strong><\/span>In a sun-swept corner of the Colorado Convention Centre, Johannesburg clinician-scientist Dr Nomathemba Chandiwana is relaying how she’s been up since 05:00 doing interviews with media back in South Africa for World Obesity Day \u2013 on 4 March. Outside the convention centre, on the horizon the Rocky Mountains sprawl snowcapped.<\/p>\n

Chandiwana refers to obesity as a public health crisis in South Africa, similar to HIV in the late 1990s. She advocates for semaglutide (sold under the brand name Ozempic) and similar medicines, to be rolled out countrywide. (Spotlight previously published an in-depth feature on the case for using break-through new weight loss medicines in South Africa.)<\/p>\n

In many countries, semaglutide injections are prescribed for treating type two diabetes; and more recently also for weight loss by those who can afford the hefty price tag. Its use by people living with HIV to induce weight loss was the subject of several studies presented at the Conference on Retroviruses and Opportunistic Infections (CROI) hosted in Denver, Colorado this year.<\/p>\n

Inside the convention centre, Chandiwana waves at familiar delegates, greeting people with a hug. A medical doctor and convener of large-scale HIV clinical trials, lately her research has converged around obesity and HIV, and resulting complications such as liver fat, cardiometabolic health, type two diabetes and obstructive sleep apnoea.<\/p>\n

“We’re using HIV as a blueprint for the obesity epidemic because it\u2019s South Africa’s biggest public health success. With HIV, initially the drugs were too expensive as well, but people fought and things changed,” Chandiwana says.<\/p>\n

In South Africa, semaglutide presently costs around R6 000 a month, where it is registered only for treating type two diabetes with widespread supply shortages. Similar to antiretrovirals, Chandiwana is saying that generic equivalents of semaglutide and similar medicines need to be mass procured and made available to people suffering from clinical obesity.<\/p>\n

ALSO READ | ‘I couldn’t find it anywhere’: Ozempic shortage in South Africa taking a toll on diabetics<\/b><\/p>\n

Commenting on the drug\u2019s shortages, she says: “It really shows the interest and also the desperation of people to have a medication that works. So people want to be slimmer for a lot of reasons, maybe cosmetic; but also due to impaired body functioning when you are extremely overweight.”<\/p>\n

At the conference, Chandiwana presented research that investigated Dolutegravir-based antiretroviral therapy, diet, activity and weight gain, in 500 people living with HIV. The study found that lifestyle behaviour changes had a limited effect on reversing weight gain in this group, concluding that “pharmacological interventions to mitigate clinical obesity in this population may be needed.”<\/p>\n

Also at CROI, Chandiwana was inside a packed auditorium attending a session on semaglutide entitled Is the Weight Over: GLP-1 Receptor Antagonists Are Here?” In the talk, scientists presented findings from a study of 222 people suggesting the drug works just as well to reduce weight in people living with HIV, as in people who do not have HIV.<\/p>\n

“Among PWH (People living with HIV), semaglutide was associated with significant weight loss, with more substantial weight loss observed in individuals with higher BMI. These findings are highly relevant given high proportions of diabetes, overweight, and obesity among PWH,” the researchers concluded.<\/p>\n

Another study presented at the conference examined changes in muscle quality and function among 46 people living with HIV treated with semaglutide, noting a loss in muscle mass, but not necessarily a loss in muscle quality. Findings were also presented on 49 individuals suggesting that low-dose semaglutide is a safe and effective treatment for a form of liver disease that is common in people living with HIV. These were both relatively small studies, and more research will be required to confirm the findings.<\/p>\n

A two-tier strategy For World Obesity Day, Chandiwana co-penned two editorials \u2013 one published on Bhekisisa, the other in the South African Medical Journal \u2013 stating that about two-thirds of women and almost a third of men in South Africa are overweight.<\/p>\n

“Obesity should not be a game of blame and shame,” she writes, along with co-author Professor Francois Venter. “Instead the country’s focus should be on both preventing and treating people.”<\/p>\n

In the Bhekisisa article, Chandiwana and Venter put forward a two-tier strategy for combating obesity: firstly, “trust the science \u2013 and make the meds cheaper,” and secondly, “fix the food system, to support healthy eating and more physical activity.”<\/p>\n

But unequal access to healthy food and safe places to exercise remain a challenge \u2013 “for example, ubiquitous, cheap, highly and ultra-processed food and sugar-sweetened beverages, offered in slick venues and spaza shops accompanied by marketing campaigns often aimed at children”.<\/p>\n

Chandiwana tells Spotlight that we live in an obesogenic environment. “Everything around us is priming us to gain weight,” she says. “I mean with load shedding, what are you going to do? You might just order whatever you can on Uber Eats. Then, as a woman, do you feel safe exercising on your streets?” She compares this to tobacco lobbying.<\/p>\n

“So, if you have a child eating McDonald’s at five years old, McDonald’s has a customer for life. It was the same with smoking, right? If you have a teenager smoking, you have a customer for life.”<\/p>\n

She says people need help through systematic change, brought by government and regulatory interventions. Last year, Spotlight reported on the South African government\u2019s strategy to combat obesity.<\/p>\n

Chandiwana helped to write the chapter on HIV treatment in the National Strategic Plan (NSP) for HIV, TB and STIs 2023-2028 and contributed to treatment guidelines on tuberculosis and sexually transmitted infections such as syphilis.<\/p>\n

In September last year, along with South African sleep disorder specialist Dr Alison Bentley, Chandiwana co-founded a pioneering sleep clinic at the Ezintsha research centre in Parktown.<\/p>\n

Chandiwana, the principal scientist and director at Ezintsha, says: “Dr. Bentley has been amazing and taught me a lot. She does the clinical aspects of [the sleep clinic] and I do the research… Sleep is about so much more than just having a mattress, it\u2019s about your health.”<\/p>\n

Currently they are monitoring up to a hundred women living with HIV for sleep apnoea, Chandiwana says. These women stay overnight for polysomnography testing, which records brain waves, blood oxygen levels, heart rate and breathing during sleep, also measuring eye and leg movements.<\/p>\n

African solutions for African problems <\/b><\/p>\n

The idea of finding African solutions for African problems is near to Chandiwana\u2019s heart. “Having an African-led research agenda is really important, I think. Because I mean, you look at a conference like CROI and most of the stuff that\u2019s being done in HIV is actually on the African continent. But it’s not Africans talking about the issues we have.”<\/p>\n

To this end, she mentions the annual Interest Conference \u2013 marketed as the premier scientific conference for HIV in Africa \u2013 which she intends to attend in Benin in May.<\/p>\n

Born to epidemiologist Professor Stephen Chandiwana from Zimbabwe, later assistant dean at the University of the Witwatersrand\u2019s faculty of health sciences, and Duduzile from Swaziland who worked for UNAIDS, Chandiwana was the middle child of three siblings. Initially because of her father\u2019s medical background, she rebelled against becoming a doctor.<\/p>\n

She says: “I always tell people I took a scenic route to medical school.”<\/p>\n

After completing a Bachelor of Science (BS) in behavioural neuroscience at Northeast University in Boston and working for a year at a sugar refinery in London, she finally enrolled for medical school at the University of the Witwatersrand.<\/p>\n

Chandiwana’s husband Zviko Mudimu works for the South African National Space Agency, and is looking after their son, 4, and daughter, 7, while she is in Denver to attend CROI. At their home in Parktown West, she enjoys gardening; growing vegetables for their kitchen table like spinach and eggplant.<\/p>\n

WATCH | Why these women use the anti-HIV pill and vaginal ring<\/b><\/p>\n

Wrapping up our interview, as the next conference session is about to start, Chandiwana stresses the importance of science made accessible to a wider audience: “As scientists \u2013 and I\u2019m guilty of it \u2013 we speak to each other, we speak to the choir. And I’ve had to learn this, we need to be able to communicate on broader platforms. Because in the end it’s only your mom and your colleagues that read your [academic] papers, right?”<\/p>\n

She pauses, laughing. “My mom still prints out my papers, isn’t that sweet?”<\/p>\n

“So even things like speaking on the radio. It\u2019s important because if you don’t [public discourse] becomes filled with other people saying other things. For example, that diet and exercise is the only way forward; that people who have obesity are lazy. So, you need to be on those platforms too, speaking evidence-based truths but in accessible short bites that people get.”<\/p>\n

This article was published by Spotlight \u2013 health journalism in the public interest. Sign up to the Spotlight newsletter.<\/p>\n

For More News And Analysis About Zimbabwe<\/a> Follow Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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