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If you listen to Piers Morgan, Love Island, the reality TV programme that has had 3.4 million people hooked night after night this summer, is for the ‘uneducated’ and ‘dim-witted’.

However, writing for the Daily Mirror this week, as part of her British Science Association Media Fellowship placement, Dr Holly Reeve of Oxford University’s Department of Inorganic Chemistry, revealed that fans of the show have more in common with professional scientists than you might expect.

Do your evenings involve:

  • predicting who will find who attractive?
  • studying contestants 'impressive' approaches to coupling up?
  • wondering what will happen when more men or women are introduced?
  • marvelling over the response of individuals to the latest dramatic twist?

Sounds like you're a scientist. An evolutionary biologist to be precise.

Dr Stuart Wigby and his team at the University of Oxford literally watch flies mating to study everything from reproduction and fertility, to changes in female behaviour (including aggression) after sex, to the link between sex, aging and number of sexual partners.

So, what can Love Island fans learn from science - and just as importantly, can the scientists learn anything from Love Island?

One of the biggest similarities between fly sex research and Love Island is the ability to control sex bias in populations (or on islands). That means that you can study the effect of having more males or females in a population on an individual's behaviour.

However, it's worth remembering that flies have very different concerns to their Love Island counterparts.

Sally Le Page from the Wigby lab says for flies, mating ‘is all about the number of offspring’, you can produce with no concern about the morality of partnerships.

In Love Island, to survive the public vote, ‘contestants effectively have to pair up in ways in which the watching public approve!’

But it's these very different concerns that make Love Island interseting.

So, what can we learn from Love Island?

Love Island essentially sets up and enforces sequential monogamy - that is, to survive (stay on the island) you need to be a couple.

It's a different setup from an evolutionary perspective where the costs and benefits of mating are different for men and women.

Dr Wigby says Love Island ‘makes the costs and benefits equal for both sexes’.

‘You might expect males and females to become more similar in behaviour...and, over evolutionary time, appearance too’.


Of course, things are a bit different when nature and evolution come in to play.

As Empirical Zeal explains; when it comes to flies: ‘Sex is war. It's a battle for limited resources.

"The source of sexual conflict is this: sperm is a relatively cheap resource for males to produce, whereas producing eggs and rearing offspring is a much larger investment on the part of the female.’

Which is where some of the conflict comes from on ITV each night - contestants bucking the evolutionary trend in order to win the contest.

We know how to study Love Island, but how do you study fly sex.

Studying fly sex and studying Love Island have some similarities (and some differences).

Male and female Drosophila melanogaster flies can be identified by their bottoms. Females tend to have large light coloured behinds, whereas males have smaller black ones.
From a selection of flies, you can separate them into compartments at male to female ratios of your choice... using small paint brushes (so the flies don't get damaged)!
From there, you can sit, watch and wait.

Studying fly behaviour

And you'll see the flies starting to mate.

Dr Wigby says: ‘It usually takes them around 20 minutes" (impressive) "so realistically you don't have to check in on them too often.'

Number of mates, fly behaviour, number of eggs laid and number of baby flies hatched can all be carefully monitored.

All in the time it takes to watch an episode (or perhaps two) of our favourite show.

Image credit: Amy HongTwo fruit flies mating.

Image credit: Amy Hong

Why do scientists study fly sex?

Flies are a good model to study for a number of reasons.

Firstly, they have short life cycles, and therefore evolution can be studied much more easily than in larger animals or humans.

Secondly, particular species of flies (like Drosophila melanogaster ) are really well understood at a genetic level. That means that it's much easier to relate findings to actual genetic changes.
Lastly, it's not particularly ethical to study these things in humans, unless it's broadcast on TV...

What have we learnt from insect sex research, past, present and future?

We've learnt a lot from studying mating in animals, including in flies and other insects.

For example, there's research that says sex can alter female behaviour.

That's because ejaculate contains a cocktail of proteins alongside sperm. These proteins can lead to emotional, and over time evolutionary, changes to females. In one Wigby group study 'when males were exposed to a competitor male, matings were longer' and more of two particular sex proteins were transferred to the females. And in another, sex led to a significant increase in aggression of female flies when it came to fighting over food! The little flies got way more angry than the bigger ones.

A Love Island-esque study showed that high male biased populations led to the evolution of males who lost the ability to maintain higher fertility over successive ejaculations.
Eeek, just another reason for our Love Island males to fear more men being introduced to the island. Some other female responses to receiving sex proteins from across the animal kingdom include - spontaneous ovulation and decreased female sexual receptivity (so a lower sex drive!).

But some results are more relevant to our lives.

In fact, in 2017 Jeffrey C. Hall, Michael Rosbash and Michael W. Young won a Nobel prize for their research into the circadian rhythm (our biological clocks). Some of this research was based on our friends, the flies.

Some recent results show that aging in men can affect sperm and sex protein quality leading to significant consequences for fertility.

Usually female age is considered more important in reproductive capabilities, but these findings help researchers look more widely at factors contributing to fertility.

And finally, are there any limitations of Love Island preventing scientific conclusions?

Wondering how the Love Island creators could make the show more scientifically relevant, and possibly more entertaining?

Firstly, the population is far too attractive.  Normal populations and sex decisions rely on diverse sexual desirability. In flies, larger females and larger males are preferable as potential mates.

Secondly, the animal kingdom doesn't follow heterosexual monogamy so strictly, allowing trios (or more) and same sex coupling would be more realistic.
Perhaps we'll see that in next year's series.

This article originally appeared on the Daily Mirror online


Niklas Bobrovitz, a PhD candidate in the Nuffield Department of Primary Care Health Sciences at the University of Oxford and an honorary fellow at the Oxford Centre for Evidence-Based Medicine, writes about his latest research into the medications that can reduce emergency hospital admissions.

Emergency hospital admissions are rising and, increasingly, policy-makers, clinicians and patients are worried about their effect on cancellations of elective procedures, prolonged waiting times, in-hospital infection rates and costs. However, identifying useful strategies for reducing admissions has proved problematic  interventions designed to reduce hospitalisations often achieve no real-world benefit, yet consume scarce health resources.

One promising intervention that has received little attention is medications; those which help a patient to avoid hospitalisation represent high-value activity in a patient’s overall care. Medications can reduce admission rates by preventing illnesses or mitigating symptoms and exacerbations that would have otherwise required urgent health care.

Our new study in BMC Medicine, therefore, aimed to identify and prioritise medications that have been shown in systematic reviews to prevent patients from requiring emergency hospital care.

What did we do?
We searched for systematic reviews of randomised controlled trials in adults that reported hospital admissions as an outcome. We then assessed the quality of evidence using GRADE criteria. We cross-referenced effective medications with high or moderate-quality evidence with UK, USA and European clinical guidelines to determine which had an acceptable overall balance of benefit to harm.

What did we find?
We found 140 systematic reviews, including 1,968 randomised controlled trials and 925,364 patients. We identified 11 medications that significantly reduced emergency hospital admissions, were supported by high or moderate-quality evidence, and were endorsed in clinical guidelines.

MedicinesEvidence-based, guideline-supported medications that reduce emergency admissions

What does this mean?
Using the 11 medications that we identified is clinically appropriate and will significantly reduce emergency hospital admissions for patients with heart failure, coronary artery disease, asthma, chronic obstructive pulmonary disease and schizophrenia.

In some health systems, these medications are already prescribed as part of routine clinical practice. However, there is evidence of significant variation in their use in the UK, USA and Europe, including under-prescribing and under-dosing. Therefore, policy-makers and clinicians should consider monitoring and improving use of these medications as a strategy to alleviate pressures on secondary acute care.

Existing mechanisms for quality measurement and improvement could be utilised. For example, the UK Quality and Outcomes Framework is a pay-for-performance incentive programme that has reduced prescribing gaps and improved prescribing efficiency. The medications we identified should be considered for inclusion in these types of quality assurance and incentive systems.

Our results may also be used to inform shared decision-making. When communicating treatment options with eligible patients, clinicians could discuss the ability of these medications to reduce the risk of being hospitalised. Given that most patients prefer to stay out of hospitals, we hope that our findings will help to inform their decisions.

This blog first appeared in BMC Medicine.

The study, titled 'Medications that reduce emergency hospital admissions: an overview of systematic reviews and prioritisation of treatments', can be accessed here.

Image credit: Shutterstock

What does the gig economy mean for you?

Lanisha Butterfield | 19 Jul 2018

How does £130 in driving fines result in a young man taking his own life?

That question lingers long after the credits roll on the BBC drama ‘Killed by my debt’, which tells the harrowing true story of Jerome Rogers, a 19-year-old courier, who tragically took his own life after debts stemming from two outstanding motoring offences spiralled beyond his control – from £65 each, to more than a thousand pounds within a matter of months.

A combination of unfortunate and all too common circumstances – flexible, insecure employment, working class background, age and unique health factors, prevented him from clearing the debts and ultimately led to his untimely death.

These factors not only made him ripe for exploitation in today’s society, but were also enabled by the very economic structure that now underpins it, the gig-economy. If at this point, you’re thinking, ‘the what?’ you are not alone. ‘Gig-economy’ is a phrase commonly used in society, but little understood by many.

To bring some clarity to the subject, ScienceBlog talks to Dr Alex Wood, a sociologist and researcher at the Oxford Internet Institute, who focuses on the changing nature of employment relations and labour markets, to breakdown everything you need to know about the ‘gig-economy’ and how it could affect you in the future.

What is the gig-economy and how does it work?
The gig-economy is the way in which people are now finding work in non-standard ways. So, instead of working for a traditional employer, they access paid-work through online platforms which enable workers to be hired to do a specific task, or gig. For example, driving jobs like Uber and delivery tasks such as Deliveroo. But also traditional freelance tasks, like website and graphic design.

It’s important to understand that the system of work comes with no frills. Zero-hour contracts and no benefits like holiday pay, sick pay or even a minimum wage.

How has it affected employment?
People are basically working in a much more flexible way. They can be juggling multiple-tasks any given time, and all hours of the day. There is no fixed way of working – the days of the 9-5 are long over for many workers.

On the one hand, this can be a positive set-up if you have control of the work you do, and are able to choose for yourself who you work for, what tasks you perform and when you do them. But to be in this privileged position your skills have to be in high demand, and the reality is that a lot of people are competing for these roles.

When you don’t have this control it can lead to employment instability and insecurity.

People have to work to survive, and if you don’t know where your next hour of work is coming from it can make it impossible to budget and plan for everyday life such as childcare, social life and holidays. Which can lead to people becoming really isolated.

It’s important to understand that the system of 'gig' work comes with no frills. Zero-hour contracts and no benefits like holiday pay, sick pay or even a minimum wage.

How can this instability affect people’s lives?
In these circumstances workers become desperate and feel they have to work whenever an employer wants them to. They relinquish all control which can be incredible stressful, mentally and physically. Control is key. 

Often in the press the gig-economy is discussed positively as something mutually beneficial to employers and workers. But in reality it is a trade-off. The reasons why each side wants flexibility are very different.

If the employee is in control, the employer is not, and they are in a position where they have to match labour supply to customer demand. But, for the worker, it is about survival and trying to make a living – as we have seen horrifically reflected in the case of Jerome Rogers.

Who is most at risk?
People competing for less in-demand skilled roles can unfortunately be taken advantage of. Unlike more skilled roles, where there is a much smaller pool of people who can perform them, there are a lot more people that want and can do the job. That means these workers do not have alternative opportunities, so if a client or platform makes unreasonable demands or wants them to work anti-social hours, they have no other choice but to do it. People need to work to survive, so they have to work whenever they are asked to.

We need to rethink our understanding of workers’ rights and employment law. The purpose of the law is to protect people in a vulnerable position, if it is not doing that anymore we need to change the law to make sure that these people are protected.

Most workers who are part of the gig-economy are also not part of a trade union, so they don’t have the protections that come from having a collective voice, which makes them much more vulnerable.

Who has the most to gain?

If workers have skills that are in demand then it can be positive for them, because they can pick and choose who they work for and when. But, in most areas there is a lack of high quality jobs and there are no good quality alternatives available.

For employers however, the benefits are much more obvious. Employing people by task allows a business to reduce labour costs and avoid paying for services that were once expected such as pensions.

Can people make the gig-economy work for them against the odds?
Collective organisation is really important, for example being a part of a trade union.
It is interesting that just last week, Deliveroo workers in London and across Europe went on strike to protest changes to their pay. Even though protections did not exist for these workers when the gig-economy structure launched, they are working collectively to put them in place. Workers who are in a vulnerable position should be able to come together and protect themselves.

Can you tell us a little about your research?
At the moment I am looking at collective organisation and community amongst gig economy workers who are doing remote gig work, in my paper 'workers of the internet unite?'
They operate on similar gig-economy style platforms to Uber and Deliveroo, which perform direct tasks, only these people work remotely from anywhere in the world, supporting digital labour, such as transcription and editing. Even these workers are coming together to create collective organisation.

What can be done to regulate the system and make it fairer?
We need to rethink our understanding of workers’ rights and employment law. The purpose of the law is to protect people in a vulnerable position, if it is not doing that anymore we need to change the law to make sure that these people are protected.

Trade unions should also be able to represent them. Often these platforms claim that workers cannot have a trade union because technically they are a business working for a client, not a direct employee.

There needs to be a recognition that if people are in a dependent situation they are automatically more vulnerable, and should have labour protections. For example, a minimum wage, sick pay and holiday pay. Things that were considered a right in traditional jobs should also be a right in the gig economy.

Dr Wood's paper 'Workers of the internet unite?' is available to view here

A new approach to measuring global trade

Professor Xiaolan Fu of the Oxford Department of International Development (ODID) explains how a proposed new approach to measuring global trade would suggest that the US trade deficit is actually about half as big as official figures report.

As the world moves towards a new trade war, with the imposition of US tariffs on goods from the EU, China, Canada and Mexico, having reliable international trade statistics is more important than ever.

However, it is widely recognised that the way in which global trade is officially measured and recorded has failed to keep pace with the increasingly complex ways in which trade is actually conducted.

This is because international statistics primarily record trade in goods and services and fail to account for the growing trade in ‘intangibles’ – such as patents, brands, trade secrets or ‘know-how’.

Nor do they adequately reflect the fact that trade increasingly occurs in global ‘value chains’, in which different tasks and business functions are dispersed across multiple companies in different regions or countries. Tracing how value is created and how trade flows across these chains can be complex.

So in response, we have developed a new approach to measuring global trade that seeks to bring together measurement of trade in goods and services with trade in intangibles and to reflect the fragmented and segmented nature of global production.

In the model, we identify five modes through which trade in intangibles takes place within global value chains: licensing; foreign direct investment (FDI); outsourcing; collaboration/alliances; and the provision of consultancy services.

We then detail how the value of intangibles is captured in each of these modes – for example through royalty fees in the case of licensing, or through dividends in the case of FDI – and how these might be accurately recorded in a country’s exports and imports. While these flows are currently included in the balance of payments in different ways, for example as investment income, they are not directly attributed to the trade process.

Applying this proposed measurement approach to the available data produces an interesting result: we estimate that the overall US trade deficit would have been around $358 billion in 2016, as opposed to the official figure of $750 billion.

This is a conservative estimate, as it does not take account of intangibles income accrued to US firms through outsourcing activities because of difficulties in tracing such information.
The proposed measure offers a comprehensive picture of the full range of trade interactions between countries and would therefore offer a more accurate basis for policy discussions about global trade imbalances and the impact of globalisation.

In particular, policy could focus on ensuring that the benefits of trade in intangibles – which are currently concentrated in the hands of a few owners of the intangibles, along with a small community of skilled researchers and technicians who created them – are distributed more equitably.

Policies could also seek to encourage multinational enterprises (MNEs) to transfer the gains from trade in intangibles back to their home countries and to curb tax avoidance.

Read the paper on which this article is based here.

Xiaolan Fu is Professor of Technology and International Development and Director of the Technology and Management Centre for Development (TMCD) at ODID.

Fragility fractures – a global cause for concern

Matt Costa, Professor of Orthopaedic Trauma at the University of Oxford and President elect of the Fragility Fracture Network (FFN), explains the need for global action to provide better care for people suffering from hip fractures and other fractures that result from increased fragility.

The global population is currently undergoing the greatest demographic shift in the history of humankind. A direct consequence of this “longevity miracle” – if left unchecked – will be an explosion in the incidence of chronic diseases afflicting older people.

A new Global Call to Action for better care for people suffering from hip fractures and other fractures that result from increased fragility illustrates that for the first time, the leading organisations in the world have recognised the need for collaboration on an entirely new scale.

The UK has recognised the need for multi-disciplinary care for patients with fragility fracture and has the world’s largest national hip fracture database (NHFD). These are essential parts of our response to the coming fragility fracture crisis, but we need to do more. Here in Oxford, we will use the World Hip Trauma Evaluation (WHiTE) research project to collect research data from around the world to improve quality of life for patients everywhere.

In the absence of systematic and system-wide interventions, this tsunami of need is poised to engulf health and social care systems throughout the world. Osteoporosis, falls and the fragility fractures that follow will be at the vanguard of this battle which is set to rage between quantity and quality of life.

By 2010, the global incidence of one of the most common and debilitating fragility fractures, hip fracture, was estimated to be 2.7 million cases per year. Conservative projections suggest that this will increase to 4.5 million cases per year by 2050. While all countries will be impacted, in absolute terms, Asia will bear the brunt of this growing burden of disease, with around half of hip fractures occurring in this region by the middle of the century. And the associated costs are staggering: in Europe in 2010, osteoporosis cost Euro 37 billion, while in the United States estimates for fracture costs for 2020 are US$22 billion.

If our health and social care systems are to withstand this assault, a robust strategy must be devised, and an army of health professionals amassed to deliver it. This strategy must transform how we currently treat and rehabilitate people who have sustained fragility fractures, in combination with preventing as many fractures from occurring as possible. The latter can be achieved in part by ensuring that health systems always respond to the first fracture to prevent second and subsequent fractures. In short, let the first fracture be the last.

A major step towards making this aspiration a reality has occurred today with publication of a Global Call to Action to improve the care of people with fragility fractures. Endorsed by 80 leading organisations from around the world, covering the fields of medicine and nursing for older people, orthopaedic surgery, osteoporosis and metabolic bone disease, physiotherapy, rehabilitation medicine and rheumatology, the case for transformation of the following aspects of care has been made:

• The surgical and medical care provided to a person hospitalised with a hip fracture, a painful fracture of the spine and other major fragility fractures.
• Prevention of second and subsequent fractures for people who have sustained their first fragility fracture.
• Rehabilitation of people whose ability to function is impaired by hip fractures and other major fragility fractures, to restore their mobility and independence.

The Call to Action was conceived at an annual congress of the FFN, when six leading organisations came together to determine how they could most effectively collaborate to improve fracture care globally. The lead author of the publication, Professor Karsten E. Dreinhöfer said 'Fragility fractures can devastate the quality of life of people who suffer them and are pushing our already overstretched health systems to breaking point.' He added 'as the first of the baby boomers are now into their seventies, we must take control of this problem immediately before it is too late.'

The Global Call to Action proposes specific priorities for people with fragility fractures and their advocacy organisations, individual health workers, healthcare professional organisations, governmental organisations and nations as such, insurers, health systems and healthcare practices, and the life sciences industry. The World Health Organisation (WHO) has declared the years 2020-2030 to be the “Decade of Healthy Aging” and later this year the United Nations (UN) will hold its Third High-level Meeting on Non-Communicable Diseases. The authors highlight the opportunity for WHO and UN to consider the recommendations made in the Global Call to Action as an enabler for their global initiatives.