For years, autism has remained one of the biggest mysteries in modern medicine.
Despite countless studies, doctors and scientists are still piecing together why so many more children today are being diagnosed with this complex condition compared to decades past.
In the UK alone, the number of people living with an autism diagnosis has skyrocketed by nearly 800 percent over the past 20 years, with around 700,000 individuals now officially diagnosed.
But what’s behind this enormous surge? Well, it depends on who you ask.
Are We Just Getting Better at Spotting It?
Many experts suggest the rise in autism cases can largely be explained by better awareness.
Parents, teachers, and doctors have become more skilled at recognizing the signs early, meaning children who might have gone unnoticed in the past are now getting the support they need.
But not everyone is convinced that’s the full story.
Some researchers argue there’s more going on — that environmental factors might be playing a bigger role than we realize in triggering the condition, even if genetics still hold the largest piece of the puzzle.
A Bold Theory: Could a Vitamin Deficiency Be the Missing Link?
One particularly fascinating idea is coming from Dr. Richard Frye, a child autism specialist at the Rossignol Medical Center in Arizona.
According to him, a shockingly simple explanation could be hiding in plain sight: a lack of folate, or vitamin B9.
Dr. Frye believes that up to 75 percent of children with autism show dangerously low levels of folate — a vitamin critical for healthy brain development.
And more remarkably, he claims that treating these deficiencies has already led to real improvements for some children within just weeks of starting therapy.
What If We Could Prevent Autism Before Birth?
Even more exciting is Dr. Frye’s theory that ensuring pregnant women get enough folate could dramatically lower the chances of a child developing autism in the first place.
Folic acid supplements — a form of folate — are already recommended for pregnant women in the UK and widely available for pennies at local pharmacies.
If Frye’s theory holds true, something as simple as making sure expectant mothers get the right nutrients at the right time could have a profound impact.
The Debate: Not Everyone’s Convinced Yet
Of course, as with many new ideas in science, not all experts are ready to jump on board.
Some say there’s not enough solid evidence yet to support Frye’s claims.
Still, studies over the years have hinted that women who take daily folic acid during early pregnancy are less likely to have children diagnosed with autism, suggesting there could be something to this connection after all. Researchers agree more investigation is urgently needed.
Why Folate Matters So Much in Early Pregnancy
So, why is folate so important? This vitamin helps build the brain and spinal cord very early in pregnancy — often before a woman even realizes she’s expecting.
Without enough folate, severe birth defects like spina bifida can occur.
That’s why the UK is set to introduce new rules next year, requiring folic acid to be added to flour to ensure women get enough without having to think about it.
Some health advocates want to see even more foods fortified to make sure no one misses out.
Genetics and Environmental Risks: A Complex Puzzle
While folate deficiency is gaining attention, other environmental factors linked to autism remain in the spotlight too.
Research has shown that older parental age, certain medications like sodium valproate, infections during pregnancy, diabetes, obesity, and even exposure to high levels of air pollution can all increase a child’s risk.
And of course, genetics can’t be overlooked. If a parent has autism, their child’s chances of being diagnosed are significantly higher.
But despite strong links, there isn’t a single “autism gene” — it’s far more complicated than that.
Leucovorin: A Different Form of Folate Showing Promise
Dr. Frye is now using a prescription version of folate called leucovorin, traditionally given to chemotherapy patients, to help children with autism.
Unlike standard folic acid supplements, leucovorin delivers higher levels of folate directly to the brain — and Frye says the results have been remarkable in some cases.
Importantly, he emphasizes that leucovorin is safe, inexpensive (around £2 per pill), and comes with virtually no side effects.
A Real-Life Success Story: How One Little Boy Found His Voice
One powerful example of Dr. Frye’s treatment in action is Ryan Baldridge Jr., a young boy from Missouri.
Until the age of four, Ryan was largely non-verbal, only able to echo words instead of forming his own sentences.
After learning about Frye’s work, Ryan’s parents took him for testing — and it turned out he had very low folate levels.
Once he began taking liquid doses of leucovorin twice a day, the transformation was almost immediate.
Within just two weeks, Ryan spoke his very first unprompted sentence to his dad: “I love you, Dad.”
It was a moment his family had waited five long years for, and they describe his progress since then as nothing short of “unbelievable.”
A Future Full of Questions — and Hope
Despite these heartwarming stories, some researchers warn against getting too carried away just yet.
Autism is a spectrum, and many children naturally experience developmental bursts around the age of three or four, which could complicate findings.
Others, like Dr. Michael Absoud from King’s College London, remind us that society is also learning to view autism differently — not always as something to “fix,” but simply as another way of experiencing the world.
Still, Dr. Frye stands firm. He says that for families dealing with severe autism, any safe intervention that could reduce suffering or improve lives deserves serious attention.
And he poses a powerful question: if there was something you could do to lower your child’s risk, wouldn’t you at least want the chance to try?