In this week's Scrubbing Up, Professor Bill Ledger says fertility drugs are being used too liberally, putting women and children at risk.
Here are some of the comments you have been sending in response to the article.
My husband and I are desperate to have a child and are currently using Clomid prescribed by our hospital. This article may well make people in our position feel like our window of opportunity is getting smaller. The risks of multiple pregnancy were outlined to us, but in my mind the risks are small - 10% - which is preferable to no pregnancy at all.
Without a doubt, fertility drugs need to be much, much more tightly regulated - the most important reason being population control. In this day and age it is, frankly, irresponsible to bring ever more children into the world. And what will the consequences be if more and more countries want to have the same rights to treat infertile females? There's already a shortage of food and water in some places. Just because we're quite well off in Europe, it doesn't mean we won't suffer sooner or later from the effects of overpopulation. Haven't we damaged this planet already almost irrevocably? Isn't infertility nature's way of saying 'enough is enough'? On a personal note, I could have had children but have chosen not to for these reasons. Some things are more important than our own personal wishes.
Martina Watson, East Horsley
Ask anyone who has been through fertility treatment and they will tell you that these drugs are not given freely or easily and that it can take years before getting to the point where you are given these drugs. This is one of the most stressful things to go through and people who conceive naturally or easily cannot even begin to imagine!
Being married to a GP, we were fully aware of the risks of having more than one at a time. We went through the full cycle of Clomid, tracking, scans and 'happy' sex - although working to a timetable in order to conceive is a bizarre take on happy! Our beautiful son will celebrate his second birthday tomorrow - a direct result of the fertility process. We now find ourselves talking about doing it again and the subject of twins has raised its head. Being a little older and perhaps a little wiser, we are beginning to debate the merits of adopting rather than having another of our own. Perhaps it is time to realise that one is enough and that there are other ways of having a larger family.
Keith Woodward, Broadstairs, Kent
As a mum of twins conceived by IVF, how can you pose this question to the general public, most of whom will never have experienced the utterly hopeless feeling that they will never have children? It is easy to sit back in your chair and criticise the number of multiple births that we have, but if you make regulations any tighter then you will certainly force people to go abroad to get pregnant.
Sarah Saynor, Leeds
Regulated? How is it even available on the NHS? Since when was having a child a medical need? The NHS wastes enough money already, continuing to fund something that doesn't improve the nation's health at all, is simply an obscene waste of money.
Fred Dawlanen, Wigan
If fertility drugs are currently prescribed mostly by hospital fertility clinics, I don't think they need to be more tightly regulated. I am currently being treated for infertility at a London hospital with Clomid and my first scan this cycle showed I was developing four egg follicles. They explained the risks of multiple births and said that if my next scan still showed four follicles they would have me abandon the cycle - no insemination treatment and abstinence at home. I totally understood the need for this policy and agreed to abandon my efforts if need be. Fortunately most of the follicles have since withered so my treatment continues.