Monday, December 16, 2013

Pressure on mothers to be

Developmental biology: Support mothers to secure future public health

Quite an interesting commentary here on the vital role for public health that science increasing sees in having healthy mothers right from pregnancy.

For example:
The Hertfordshire data and similar records from other UK towns revealed, for instance, that a person weighing 2.7 kilograms (6 pounds) at birth has a 25% higher risk of contracting heart disease in later life, and a 30% higher risk of having a stroke, compared with someone weighing 4.1 kilograms (9 pounds) at birth3.

These findings were soon strengthened by data from a cohort of 20,000 people born in Helsinki between 1924 and 1944. This study showed, for example, that if all the babies at birth had had weights within the highest third of the total range, the incidence of diabetes in later life would have been halved4. In the years since, numerous other studies, involving people from places as diverse as Europe, India, Guatemala, the Philippines and South Africa, have revealed similar correlations with effects that extend to the health of grandchildren.

In the past 15 years, researchers have begun to understand the biology underlying the links between development and chronic disease. The evidence suggests that women should start eating healthily well before they get pregnant. Women who are obese, for example, accumulate more metabolites (such as insulin, lactate and triglycerides) in their ovarian follicles5 than do women who are not obese. This accumulation can reduce their fertility and increase the likelihood that their offspring will develop certain diseases, such as diabetes, cardiovascular disease or cancer, later in life.
 And how about this for some justification for my feeling that IVF has involved too much mucking around with nature:
 At the moment of conception, the growing embryo seems to be exquisitely sensitive to its nutritional environment. Studies of babies born through in vitro fertilization, for instance, have shown that birth weights can be affected simply by changing the constituents of the medium in which the embryos are cultured.
It would certainly appear that it will be decades yet before we truly know the long term health consequences of the IVF techniques.

Spin, spin, Sheridan

Now this is a phone call I would like to have the exact transcript to.

Greg Sheridan took a call from the Indonesian ambassador to the US on the weekend who was  delivering President SBY's reaction Sheridan's (and The Australian's) Saturday story that there really was good reason to spy on his wife.

I found the reasons given pretty unconvincing, and could only imagine that SBY would find them offensive, but Sheridan is trying to put the phone call in the best possible light:
Dr Yudhoyono instructed Dr Djalal to ring me to convey the President's personal reaction to the stories. Dr Djalal checked with Dr Yudhoyono that these remarks could be publicly attributed to the President. The President said he found elements of The Weekend Australian's coverage showed balance and that there were some positive aspects of the coverage.

Dr Yudhoyono also pointed out that it was he, as President in 2005, who first moved to elevate the Indonesia-Australia relationship to the higher plane it has existed on in recent years. Since that time, he said, he had worked consistently to improve the relationship between the two countries.

He said the dispute over the spying story had hurt him personally. The President said he was determined to repair the relationship and would work towards a solution. This needs to happen through the steps the two nations had agreed on. It also needed to happen in a way that satisfied his domestic needs.
This has the heavy smell of spin around it, doesn't it?    On Sheridan's part, I mean.  I would like to know how much of the conversation was about the "personal hurt", and whether they was mention of "negative elements" as well as the "some positive elements".


Sunday, December 15, 2013

Politicians and movies don't mix

It's regrettable that Al Gore headed "An Inconvenient Truth":  he gave Right wingers an excuse to claim a serious environmental issue as being something only a "Lefty" should worry about.

But now we seem to have another good example of a politician unwisely getting into the movie business.  Rick Santorum is the CEO of a Christian movie company, and its first release "A Christmas Candle" is receiving some disastrous, but pretty funny, reviews.  The movie features Susan Boyle, a bit of casting that appears to have very wrong.

Peter Bradshaw in the Guardian:
The urgent question of when Susan Boyle will give us her cinema debut has been settled. She makes a truly extraordinary appearance in this film, not just singing but acting, too, playing a churchwoman with the voice of an angel in a stilted, treacly, and, frankly, bizarre tale of yuletide miracles....

Every 20 minutes or so, Boyle is allowed on to say a line, which she does weirdly quietly, as if talking in her sleep. Her facial expression never changes. And all the professional actors around her look stunned, like those Dallas cops when Jack Ruby stepped forward to shoot Lee Harvey Oswald.
It's not just a Left wing Guardian reviewer, though.  In the Daily Mail:
So I didn’t go to watch The Christmas Candle, Boyle’s big-screen acting debut, with the same negativity as the audience when Ant and Dec sent her out on stage four years ago.

Maybe she’d be just fine.

Unfortunately, she isn’t. Boyle really can’t act.

In fact, Ant or Dec might have been more convincing as church warden’s wife Eleanor Hopewell, and one of Boyle’s co-stars, Lesley Manville, has publicly questioned the decision to cast her.

Yet the big problem with this film is not dear old Subo and the slightly creepy little giggles she keeps emitting, it’s the muddled narrative.
And another (although this review does leave poor Susan alone):
"The Christmas Candle" is a determinedly retro-minded holiday saga that contains no foul language, gruesome violence indeed anything beyond the mildest suggestion of hanky-panky, and for a certain portion of the moviegoing public, these absences alone would be enough to warrant a recommendation. The trouble is that the filmmakers have also neglected to include such other elements as wit, style, energy or anything resembling a coherent narrative.
Better luck next time, Rick! 

Saturday, December 14, 2013

It's OK when Rupert does it...

So, how's this supposed to work?

The Guardian and the ABC report from the Snowden leaks that Australia had targeted the Indonesia President's wife's mobile phone, causing a major diplomatic falling out which is supposed to cured with some future protocol.  Presumably, this will involve an indication from us that we agree it's not a nice thing to spy on politicians' wives.

The ABC Collective* condemns the Guardian and the ABC for publicising the spying story.  Against our national interests, etc etc.

Story goes quiet for a couple of weeks.

Then today, The Australian comes out with headline stories that read:

Hey!  It's quite OK to spy on Indonesian President's wives after all!  Kevin Rudd made a good call!

How the hell is that supposed to help repair the relationship?

In fact, isn't it just about the worst possible thing that you could do if our robot Foreign Minister is still negotiating some future promises with the Indonesians?   No, according to Bolt, it's important that the Right attack the Left for criticising the decision to spy on her.

This is ludicrous behaviour by the Right, if you ask me.

 * The Australian, Andrew Bolt, and Catallaxy, for any new reader.

Friday, December 13, 2013

Who knows what this means for education policy?

Nature trumps nurture in exam success: GCSE results 'mainly determined by genes,' says landmark study of twins

Michelle's summary seems pretty right to me

Grattan on Friday: 100 days and the "adults" still have a lot of growing up to do.

It starts:

It is just 100 days on Monday since the election, but the Abbott government lacks that air of excitement that power often brings. Rather, it is staggering towards Christmas, mugged by moving from rhetoric to reality, from the disciplined order of opposition to the setbacks and unexpected challenges of office.
We will do, Abbott pledged before the election, reeling off intentions, only to find there are many things, including the core promises of repealing the carbon and mining taxes, that he can’t do, at least for the moment.

He’d run a government of no surprises, he said. Well, he has been surprised, unpleasantly – most notably by the revelations about Australian spying in Indonesia, as well as by Holden’s intended departure.

And there’s been the unsettling reminder that voters were more anxious to throw out Labor than enthusiastic about the Coalition; now they’re unimpressed by the government’s early efforts. This week’s Newspoll had the ALP leading 52-48%. Satisfaction with Abbott’s performance was 40% - it has fallen steadily from 47% in October. Opposition leader Bill Shorten’s satisfaction rating was 44% - it has risen steadily from 32% in October.

Thursday, December 12, 2013

Spooky children's stories

The Science of Reincarnation | The University of Virginia Magazine

The work of the late University of Virginia Professor Ian Stevenson on reincarnation was mentioned in comments here recently, and I see now that the University still has a psychiatrist who conducts research on the topic.

The link gives a pretty good example of one case he knows about in detail.

I am  a bit surprised to see that 70% of children who suddenly claim to have lived before are male.   But it is interesting to hear of American cases.  If I recall correctly, one of the big issues with Stevenson's work which (I think) dealt with a lot of Indian cases, is that the kids were being raised in a society which already accepts reincarnation, and they would surely be influenced by that in their imaginative life.

That's a lot harder to see as an influence in America.  

You should also read the comments following the article.   Some people are "appalled" that the University magazine would run such an article.

Wasted trip

BBC News - Dinosaur asteroid 'sent life to Mars'

 The asteroid that wiped out the dinosaurs may have catapulted life to Mars and the moons of Jupiter, US researchers say.

They calculated how many Earth rocks big enough to shelter life were ejected by asteroids in the last 3.5bn years.

The Chicxulub impact was strong enough to fire chunks of debris all the way to Europa, they write in Astrobiology.

Thousands of potentially life-bearing rocks also made it to Mars, which may once have been habitable, they add.

"We find that rock capable of carrying life has likely transferred from both Earth and Mars to all of the terrestrial planets in the solar system and Jupiter," says lead author Rachel Worth, of Penn State University.
"Any missions to search for life on Titan or the moons of Jupiter will have to consider whether biological material is of independent origin, or another branch in Earth's family tree."

Wednesday, December 11, 2013

Sounds kind of improbable to me...

Life possible in the early Universe 

Aliens might have existed during the Universe’s infancy. A set of calculations suggests that liquid water — a pre­requisite for life — could have formed on rocky planets just 15 million years after the Big Bang.

Abraham Loeb, an astrophysicist at Harvard University in Cambridge, Massachusetts, has realized that in the early Universe, the energy required to keep water liquid could have come from the cosmic microwave background, the afterglow of the Big Bang, rather than from host stars. Today, the temperature of this relic radiation is just 2.7 kelvin, but at an age of around 15 million years it would have kept the entire Universe at a balmy 300 kelvin, says Loeb, who posted his calculations to the arXiv preprint server this month (http://arxiv.org/abs/1312.0613).

Loeb says that rocky planets could have existed at that time, in pockets of the Universe where matter was exceptionally dense, leading to the formation of massive, short-lived stars that would have enriched these pockets in the heavier elements needed to make planets. He suggests that there would have been a habitable epoch of 2 million or 3 million years during which all rocky planets would have been able to maintain liquid water, regardless of their distance from a star. “The whole Universe was once an incubator for life,” he says.
 But as one critic says further down in the article:
Christopher Jarzynski, a biophysicist at the University of Maryland, College Park, is not convinced that life could exist in a uniformly warm Universe. Life on Earth depends thermo­dynamically not only on the heat source of the Sun, but also on the cold cosmic microwave background, which provides a heat sink, he notes. “Life feeds off this,” he says. And Alexander Vilenkin, a cosmologist at Tufts University in Medford, Massachusetts, says that a few million years is too short a time to produce intelligent life.
 Anyway, if true, and aliens did evolve then, it certainly sets up well the idea that our alien overlords (like the ones in 2001 A Space Odyssey) are very old indeed. 

Love fight

A rather odd on line fight has broken out between those who hate the movie Love Actually, and those who defend it.  (The 10 year anniversary of its release seems to be the motivation for this re-assessment.)

Christopher Orr started it with his lengthy explanation of why he thinks the movie is awful and actually anti-romantic.  His critique is not perfect - he says he thinks Bill Nighy is terrific, whereas I always find him hammy and annoying.   But he makes a pretty strong case against the movie overall.

(I just found the movie extremely unconvincing in virtually every story thread.   I wrote at the time that I found some of the stories verging on creepy, but I've actually forgotten which ones now.)

Orr's article has now been followed by this:

I Will Not Be Ashamed of Loving Love Actually - Emma Green - The Atlantic

and she brings in CS Lewis to defend her take on the movie.  (!)  [I somehow have my doubts that he would have taken to the love story between actors doing fake porn scenes.]

Other haters and lover of the movie have taken this as a cue to join in.  I see that this Australian entry is pretty good - she seems to dislike it in pretty much exactly the same ways I do.  After than, you can read a defence of the movie on Mother Earth News.  Then you can go visit another Australian woman who dislikes the movie.

I think the "noes" have it.

UPDATE:  An English young bloke in The Guardian now has a go at Australians for criticising it, even though this round of criticism started in America, declaring it his favourite movie, ever.  (!)   I think he should be a little embarrassed about that, in all honesty.

Drink up

BBC News - Artificial sweetener aspartame 'is safe'

I work on the assumption that if the Europeans think a food additive is safe, it almost certainly is.

Tuesday, December 10, 2013

An early Christmas present...

...at least for those of us who didn't vote for Abbott.


From the Financial Review:
The Abbott government’s extraordinary collapse in public support has been confirmed in the latest Newspoll, which puts Labor well ahead on a two-party basis and shows the Coalition has lost its carbon tax advantage.

The Newspoll, published in The Australian on Tuesday, finds the Coalition’s election-winning margin has been erased in just three months, with Labor now leading the two-party preferred vote with 52 per cent compared with the Abbott government’s 48 per cent.

The poll result confirms an Australian Financial Review/Nielsen poll, published two weeks ago, which was the first since the election to show that voters had dramatically shifted allegiance away from the Coalition, despite the party’s landslide win on September 7.

This translates into a 5.5 per cent swing against the government since the country voted, a shift strongly represented in the Financial Review’s Poll of Polls.
 Actually, I don't really think that it was "a landslide victory", but apart from that, a good report!

Monday, December 09, 2013

Counting men

I've noticed in the last 6 months that some conservative Catholics in the blogosphere have taken to claiming that the CDC in the US thinks that only 2% of men engage in "same sex behaviour".   (And conclude from that "hardly anyone is gay - why is gay marriage needed?)

In fact, the 2011 study they rely on says this in the abstract:
Estimates of the proportion of men who engaged in same-sex behavior differed by recall period: past year = 2.9% (95%CI, 2.6–3.2); past five years = 3.9% (3.5–4.4); ever = 6.9% (5.1–8.6).
 Which, of course, indicates that the true percent of gay or bisexual men would likely be around 4 - 5%.

With that background, it was interesting to read this article in the New York Times  in which a guy with a PhD in economics looks at the different threads of evidence and agrees with a 5% figure for "men who are predominantly attracted to men".

The most interesting aspect of the article is, however, the evidence he looks at for those parts of America where it seems men are more likely to be "in the closet".   (It's centred in the Southern, evangelical States.)    I thought this part was an innovative bit of research, and a bit darkly amusing:
Additional evidence that suggests that many gay men in intolerant states are deeply in the closet comes from a surprising source: the Google searches of married women. It turns out that wives suspect their husbands of being gay rather frequently. In the United States, of all Google searches that begin “Is my husband...,” the most common word to follow is “gay.” “Gay” is 10 percent more common in such searches than the second-place word, “cheating.” It is 8 times more common than “an alcoholic” and 10 times more common than “depressed.” 

Searches questioning a husband’s sexuality are far more common in the least tolerant states. The states with the highest percentage of women asking this question are South Carolina and Louisiana. In fact, in 21 of the 25 states where this question is most frequently asked, support for gay marriage is lower than the national average.
 The other point that gays rights activists can rely on when talking about the relevance of numbers is this (I only thought to look this up on the weekend):
By 1933, German Jews were largely urban, middle class, prosperous in business, and well represented in the professions (especially medicine and law). They were culturally integrated but represented less than 1 percent of the total population.
PS:  I still don't support gay marriage, and would prefer it be dealt with by civil unions, perhaps even following the Tasmanian model which allow for other co-dependency relationships to be registered too.  But at least I don't argue dishonestly about it.

Sunday, December 08, 2013

The Australian applauds itself

Given that The Australian has possibly the most annoying paywall system on the planet, as well as being essentially a print version of the Catallaxy blog on its opinion pages and its politics generally, I missed a truly remarkable editorial they ran last week, until I read about it on John Quiggin's blog.

This loonpond post contains the editorial in full as illustrated by First Dog on the Moon.  (You may notice it is also where I read the Tom Tomorrow cartoon featured in my last post.)

Although we don't know who wrote it, as Uncle Milton at JQ's blog noted:
The Oz’s piece, while anonymous, reads like it was written by Nick Cater. His writing has the air of painful frustration that the enemies of everything he holds near and dear refuse to go away.
I find Cater very annoying and shallow.  I have read reviews of his book indicating that he really spends a lot of time on environmentalism as a culture war dividing line.   I suppose it is, but only because the Right went stupidly anti-science about it.

Asians and Republicans

GOP starts a tough struggle to win back Asian American voters - latimes.com

The LA Times has an interesting article here on the way the Republicans lost the Asian vote.

Until they return from the Tea Party Right wing policies (and there is little sign of that at the moment), it is hard to see Asians returning to them.  Some extracts:
Asian Americans have shifted dramatically away from the Republican Party over the last two decades — more so than any other voting group. In 1992, Republican George H.W. Bush won 55% of the Asian American vote against Democrat Bill Clinton. Last year, President Obama won 73% against Republican Mitt Romney, a better showing than the president's 71% support among Latinos, according to exit polls....

The shift in Asian American political sentiments started during the Clinton years and owes much to the prosperity of his two terms as president, which enhanced the appeal of a Democratic Party that, from the civil rights movement on, had always seemed more welcoming to minorities.

Hastening the trend has been the rightward turn of the Republican Party.

Opinion surveys have found Asian Americans more willing than white voters to support tax hikes to reduce the federal deficit, more supportive of a large, activist government, friendlier toward immigrants in the country illegally and more favorably disposed to Obamacare than voters overall. All those positions clash with today's prevailing GOP sentiment.

The harsh Republican tone on immigration, directed mainly at people crossing illegally from Mexico, has been especially damaging.
And speaking of the last US Presidential election, I came across this last week and found it quite funny.  I hope the words are readable:

A good summary

Abbott team in government loses control of conversation | World news | theguardian.com

I thought the above article by Lenore Taylor in yesterday's Guardian was a pretty good summary of how the Coalition government is going.  (Short version:  not very well.)

I liked this bit in particular:
Similarly, there were many in the Coalition who sought to deflect attention from Guardian Australia’s spying stories by trying to start a fight they were itching to have anyway about the role and remit of the ABC.

Both Guardian Australia and the ABC took the decision that publication on the Indonesian spy story, with all requested redactions on actual national security grounds, was in the public interest. Abbott himself acknowledged that “plainly it was a story”. The prime minister and the communications minister, Malcolm Turnbull, asserted the ABC had made an “error of judgement” in partnering with Guardian Australia to run and “amplify” the story, something that has also been done by many other media organisations around the world. (It is unclear how the amplification would have been appreciably reduced had Guardian Australia run the story on its own and the ABC had then begun following it ten minutes later.)

Saturday, December 07, 2013

Cheese in detail

It's Saturday night, and I'm reading an article that contains far more detail about the chemistry and biology of cheese than I really need to know, including this:
In Quicke’s vat, this arrangement has broken down and become curds and whey, on its way to cheddar. If milk is left alone, bacteria quickly start converting its lactose sugar into lactic acid that can eventually start this curdling. This is probably how cheese was first made, but modern needs for safe storage and maturing demand a different approach. Quicke’s minimally pasteurises its milk, and like most modern cheesemakers adds a starter culture including lactic acid bacteria such as Streptococcus, Lactococcus and Lactobacillus. They work hand-in-hand to control which bacteria reach the final cheese, by outcompeting less welcome species and making the environment too acidic for them. And rather than these bacteria doing the curdling, acid conditions help an enzyme preparation known as rennet to do it. Their ongoing acidity development also controls the resulting solid curd’s texture.

Traditional rennet, which Quicke’s uses, comes from soaking a milk-fed calf’s stomach in brine.
 Had some nice goats cheese at dinner tonight, as it happens.

UPDATE:   I was wondering last night how someone first worked out that calf's stomach contained something that was useful in making cheese.  Another site provides the likely answer:
There is a great deal of mythology surrounding the history of cheesemaking, because humans have been making it for a very long time, and the steps involved are actually fairly complicated. The stomachs of ruminants have historically been used to make bags and sacks, and food historians theorize that someone must have stored milk in one a bit too long, allowing it to curdle, and the curdled milk was then turned into a food product. Modern rennet is created through an extraction process that yields neat, dry tablets or a liquid that is very easy to work with.

 Traditional rennet was made by washing the stomach of a young ruminant after it has been slaughtered, and then salting it. The salted stomach is kept in dried form, with cooks snipping off small pieces and soaking them in water when they have a need for the extract. Some cheesemakers continue to make and use it in this way, but the vast majority use commercially processed rennet, which is made by creating a slurry and then subjecting it to a compound that will cause the enzymes to precipitate out.

Friday, December 06, 2013

Another episode of "It's all in the Gut"

Bacterium can reverse autism-like behaviour in mice
Doses of a human gut microbe helped to reverse behavioural problems in mice with autism-like symptoms, researchers report today in Cell1. The treatment also reduced gastrointestinal problems in the animals that were similar to those that often accompany autism in humans.
Applying this to humans might be a little tricky, although I wonder if you could really do much harm by just trying introducing different bacteria until you find one that helps:
Although many anecdotal reports and small studies have suggested that ‘probiotic’ bacteria, such as those found in yoghurt, and antibiotics can help with the symptoms of autism, Cryan says more research needs to be done. Because there are a number of types of autism in humans, it will be important to look at how different symptoms might be affected by different microbes. Another question is whether the microbiomes of the mice — whose symptoms result from maternal infection — differ from those of mice that are genetically predisposed to autism-like symptoms, Cryan adds.
Here's the main point, though:
“I think there is now sufficient proof of concept where people can start to look at probiotic bacteria to improve brain function in humans,” says gastroenterologist Stephen Collins of McMaster University in Ontario, Canada. 
Maybe Freud should have worked with the Kellogg brothers.  (Although, now that I check, they had some freaky ideas about matters sexual such that they might have been a bad influence even on Sigmund.)

Back from the future

Hmmm.  It seems that Blogger's "Search this blog" function has changed to become even more wonky that it used to be - so that the side search box is not working at all now, but I can still use a box at the top left, even though it shows posts in full instead of the way it used to just list them.

Blogger has been a fantastic free service, but it has always puzzled me why they couldn't get this feature quite right.

Anyhoo, that's all by way of background of noting that I am sure I have posted before about my fondness for the idea that aliens are time travelling, very evolved, humans from the future.   Sure, it doesn't explain the whole anal probe meme, but I'm sure dogs, cats and apes get a bit confused as to what's gone on during some interactions with humans, too.

As far as I can recall, there hasn't been a popular science fiction book or movie on this theme, which seems an odd oversight.   I did give credit to Indian Jones and Kingdom of the Crystal Skull for presenting aliens as inter-dimensional travellers, though, as that is an idea that has somewhat displaced aliens as mere space travellers, and that's getting closer to the idea that they are future humans.   (I suppose one could argue that The Adventures of Buckaroo Banzai Across the Eighth Dimension far pre-dated Crystal Skull in running with inter-dimensional aliens, though.   Why does that movie - which I enjoyed at the time - never get repeated on TV, I wonder?) 

And all of these musings, which I have probably said all before at this very blog, are inspired by this post at the oddball corner of Huffington Post.  Apparently, the aliens as humans from the future goes back to some guy who allegedly had connections to Roswell:
We still really don't know what happened at Roswell, but there is an ancient alien/astronaut link that adds to the mystery. According to a renowned U.S. Navy Commander named George W. Hoover, the aliens may have been human beings from the future... us... come back to, well, interact with... us.

Allegedly, Hoover had top-secret clearance as part of his work as a Naval Intelligence Officer to view the Roswell debris and bodies during the 1950s...and he eventually told a very select group of people before his death of his beliefs. Those people included his own son, George Hoover, Jr. and later ufologist and researcher William J. Birnes, both of whom were made privy to what the elder Hoover knew before his death. Hoover stated during interviews that he believed the aliens were not extraterrestrial, but were extratemporal -- as in time travelers. In addition, he believed they were not really aliens at all... but humans of the future, with incredible abilities to use the power of consciousness to morph reality and travel through the landscape of time.

Mainly good news

US pregnancy rates continue to fall

The decrease in unwanted teenage pregnancies is welcome, although I suppose it may be the case that too many women are leaving having kids too late:
Pregnancy rates for teenagers also have reached historic lows that extend across all racial and ethnic groups. Between 1990 and 2009, the fell 51 percent for white and black teenagers, and 40 percent for Hispanic teenagers.

The teen birth rate dropped 39 percent between 1991 and 2009, and the teen abortion rate decreased by half during the same period.

Overall, pregnancy rates have continued to decline for women younger than 30.

"The amount of knowledge that young women have about their birth control options is very different compared to a few decades ago," said Dr. Margaret Appleton, director of the division of obstetrics and gynecology at the Scott & White Clinic in College Station, Texas. "Birth control is more readily available to women, and they are more knowledgeable about it."

At the same time, pregnancy rates have steadily increased for women aged 30 to 44. The rate increased 16 percent between 1990 and 2009 for women aged 30 to 34, for example, and 35 percent for women aged 35 to 39.
 But in not so good news, it seems that there may be a link between IVF treatment and increased risk of dangerous melanoma.