Some 72% disagree with women using IVF to conceive a baby when they are passed their childbearing years, a poll has found.
Research, carried out alongside a documentary on older mothers, also showed how one quarter did not believe women should bring babies into the world past the age of 40 and men should stop at 43.
Over 2,000 people were quizzed across the UK and 31% of those said the current NHS limit for IVF, 42, is too old.
A further 26% supported lowering the age limit to 40 for either IVF on the NHS or private treatment.
When asked what was the ideal age for women to have their first baby, 27 was the most popular age.
A four-year old girl has been awarded £35,000 in damages after her mother was given abnormal donor sperm at a leading London fertility clinic, which may result in the girl facing fertility problems when she is older.
The child's mother attended the London Women's Clinic in Harley Street for IVF treatment using an anonymous sperm donor and gave birth to the baby girl in October 2009.
The four-year-old girl is healthy, but has a rare genetic defect that means she is likely to need IVF if she wants to start a family of her own, as she is at greater risk of miscarriage or giving birth to a child that suffers from severe disabilities.
The clinic's solicitor, Nico Fabri apologised to the mother and daughter for its duty of care failings at a brief hearing in London earlier today.
The mother's solicitor, Matthew Waite said: "My client understandably put her trust in the clinic and expected the care she was paying for to be of the highest standard."
"Choosing to undergo IVF with an anonymous sperm donor was not a decision I made lightly, but I believed the London Women's Clinic was one of the leading fertility centres in the country and I spent £30,000 with the clinic expecting a high-level service," said the mother.
Dr Allan Pacey, senior lecturer in reproductive and developmental medicine at the University of Sheffield and chairman of the British Fertility Society, said those embarking on IVF should feel reassured by the reports findings, he said:
This is a very important study which defines the risks of IVF children being born with two neurodevelopmental disorders. It is a large study and is exactly the kind we need if we are to give patients accurate information before they embark on treatment.
The main message of the paper is a positive one, suggesting that any risk of these disorders is very low, or absent, in comparison to children conceived naturally. However it does highlight the importance of preferentially using standard IVF rather than Icsi, and also using ejaculated sperm rather than those recovered surgically from the testicle, in situations where it is possible to do so.
Patients about to embark on treatment should not worry and should discuss any concerns about their treatment plan with the team responsible for their care.
Study leader Dr Avi Reichenberg, from the Institute of Psychiatry at King's College London, said:
Our study shows that treatments developed to manage male infertility are associated with an increased risk for developmental disorders in offspring.
The exact mechanism is unclear, but there are a number of risk factors, from selection of IVF procedures, to multiple embryos, and to pre-term birth.
Whilst intellectual disability or autism remain a rare outcome for IVF, being aware of the increased risk associated with specific types of IVF means offspring at risk can be identified and potentially monitored for developmental disorders, ensuring they receive early detection and appropriate support and care.
The researchers insisted the research should not hinder childless couples seeking IVF treatment.Co-author Dr Karl-Gosta Nygren, from the Karolinska Institute in Stockholm, said:
There's no question that we would stop any treatment or anything like that because of the findings. On the contrary, the results are reassuring.
It's important to remember that the majority of children are born perfectly healthily following IVF.
Our study provides much-needed information for parents and clinicians on the relative risks of modern IVF treatments, enabling them to make the most informed choice possible.
Compared with 'natural' conception, IVF overall had no effect on autism rates and led to a very small 18% increased risk of low IQ which appeared to be linked to multiple births.
The significant findings only emerged when researchers compared six different types of IVF involving the standard "mixing-in-a-dish" method of fertilising eggs or Intra-Cytoplasmic Sperm Injection (Icsi).
Icsi used with fresh or frozen embryos produced 51% more intellectually impaired children than standard IVF.
The direct injection method, Icsi, was originally developed to help infertile men, but it now makes up half of IVF treatments in the UK including those resulting from female fertility problems.
Certain forms of IVF treatment are significantly associated with an increased risk of low intelligence in children, a major study has shown.
A link was also found with an especially severe type of autism, but only in the case of twins or triplets.
Scientists who analysed data on more than 2.5 million births stressed that the chances of an IVF baby being affected remained tiny in real terms.
The Swedish study, published in the Journal of the American Medical Association, is the first of its kind to compare a wide range of IVF treatments.
Britain may become the first country in the world to allow babies to be born with three genetic parents to help stamp out serious diseases.Read the full story ›
Paul Tully from the Society for the Protection of Unborn Children said the "three parent" IVF technique is a "step" towards designer babies.
Mr Tully told ITV News: "It is a change that can be passed on to future generations, and we are manipulating the genes of a child.
"We're concerned that we are replacing what we know to be defective DNA in the embryos that we don't like with what we think is good DNA - but we can't be sure.
"Putting the money into this kind of research is denying funding to research which is needed and ongoing to help people with mitochondrial diseases and other diseases in other ways.
"We've seen the same thing before with stem cell research, we've seen it with IVF - promises that using embryos will lead to advances but come to nothing.
Dr David King, director of Human Genetics Alert, told ITV News the "three parent" IVF technique crosses a "crucial ethical line":
Genetic Alliance UK has welcomed the "three parent" IVF technique proposal.
The charity's director, Alastair Kent, said: "Many of these [mitochondrial] conditions are so severe that they are lethal in infancy, creating a lasting impact upon the child's family.
"An added option for families at risk of having a child with such a condition is welcome".
Experts said the technique would likely be used in around a dozen IVF cases every year.