Direct sunlight to cure newborn jaundice? Why the sunlight myth is so risky, especially for babies

Newborn jaundice is quite common, especially in those first few days after birth. If you’ve ever noticed a baby looking a bit yellow, that’s probably why. It affects 60%-80% of newborns around the world. But in South Asia and Sub-Saharan Africa, there are very high rates of severe forms of jaundice that cause deaths and disabilities. There are just over 1.1 million babies who develop severe hyperbilirubinemia each year, resulting in over 114,000 deaths, and many of these children will have significant disabilities.

Understanding newborn jaundice: What is it and what works

Newborn jaundice happens because the tiny livers of the babies are still figuring out how to get rid of bilirubin, a yellow pigment from breaking down red blood cells. Most of the time, it just goes away on its own. But sometimes, bilirubin levels get too high, and that’s when things can get serious. High levels can harm a baby’s brain if not treated, so doctors keep a close eye and step in when needed.

Now, the gold standard for treatment is phototherapy. It’s not just any light — it’s a specific blue-green light that breaks down bilirubin so the baby can get rid of it through pee and poop. Hospitals use special lights set to just the right wavelength and strength. That’s important because regular sunlight can’t guarantee the same effect, no matter how sunny the day is. Babies under phototherapy usually wear only a diaper and little eye patches to protect their eyes, while the light does its job. This method has worked safely for decades.

The sunlight therapy myth: Why is it ‘risky’

Why do some parents think direct sunlight might help their babies recover from jaundice?

Well, the myth has roots in the fact that sunlight does give off a whole range of light, including some that overlap with the blue-green phototherapy range. There have even been studies looking at filtered sunlight — in very controlled settings, using special filters to block dangerous rays. But that’s not what happens if you just put a baby in the sun at home.

Here’s the problem with direct sunlight for jaundice:
First, sunlight is full of ultraviolet (UV) and infrared (IR) rays. These can burn and damage a newborn’s delicate skin and eyes — and their skin is super thin. Even short periods outside can be dangerous.

Second, you can’t control sunlight. It changes with the time of day, the weather, your location, and the season. There’s no way to know if your baby is getting enough of the “right” light, or way too much of the wrong kind. That makes it unreliable and risky.

Third, newborns aren’t great at managing their body temperature. Too much sun can make them overheat (or, weirdly, get too cold in the wrong conditions), and it can dehydrate them. That just adds more stress to their bodies and doesn’t help the jaundice.

Fourth, trying sunlight at home can give a false sense of security. While parents hope they’re helping, they might actually be delaying real treatment — letting those bilirubin levels climb to dangerous territory.

What does science say

Some research has explored filtered sunlight phototherapy, mostly in places where hospital care isn’t always available. These studies use special canopies and filters to block out harmful rays, and experts keep a close watch. It can work, but this is nothing like just putting a baby outdoors. Doctors still warn: never use unfiltered sunlight as a substitute for proper medical care.

Not just that, Dr Syed Musab Hussaini Maghrabi, a pediatrician going by the name of “drtiny_tots”, recently shared a post on Instagram where he busted the myth around the old wives’ tale: “A bit of sun will fix that jaundice!”

He wrote, “uncontrolled UV exposure doesn’t effectively break down bilirubin—the pigment causing the yellow tint. Instead, it exposes fragile newborns to harmful rays,” which eventually leads to dehydration, overheating, skin, and eye damage in kids.

Safe tips for parents

So, what should parents do? If you notice your newborn’s skin or eyes looking yellow, talk to your pediatrician. Real phototherapy — whether in the hospital or with approved lights at home — is the safe, proven way to treat serious jaundice.

But don’t put your baby in direct sunlight, not even by a sunny window.

While mild cases of newborn jaundice often get better with regular feeding and monitoring, parents should always check with their doctor. When it comes to newborn health, safe beats sorry every time.





Get an chance to win ₹5000 Amazon Voucher by taking part in India's Biggest Habit Index! Take the survey here

Get the latest lifestyle updates on Times of India, along with Merry Christmas wishes, messages and quotes !