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Planetary health cases

  • How does planetary health impact on patient’s or population’s health? How does patient/population health management impact on planetary health?
  • Planetary health is both about the impact that the provision of healthcare can have on the environment and about the impact that changes in the health of the planet can have on health conditions.
  • More cases are available for teaching purposes. Please see below for more details.

Case 1: Poorly controlled asthma

A 14 year old girl with poorly controlled asthma presents with her and her family asking what she can do to stop coughing all the time. They live close to the main road in town. You note on her medication history she has had 8 Ventolin pMDI inhalers and 2 Clenil pMDI in the last 6 months. They’re asking for more cough syrup.

Should people with asthma cough all the time?

Persistent coughing is a sign of poorly controlled asthma. Coughing all the time should indicate a review of the current treatment. This would include checking her inhaler technique and understanding of how she uses her inhalers. As she is 14 this might include offering a change from a pressurised metered dose inhaler (pMDI) to a Dry powder inhaler.

Should people with asthma cough all the time?

Persistent coughing is a sign of poorly controlled asthma. Coughing all the time should indicate a review of the current treatment. This would include checking her inhaler technique and understanding of how she uses her inhalers. As she is 14 this might include offering a change from a pressurised metered dose inhaler (pMDI) to a Dry powder inhaler.

What is the relevance of living near the main road?

Air pollution is a well established exacerbator of asthma (as well as being associated with COPD, Lung Cancer, Ischaemic Heart Disease and strokes, Diabetes, Dementia, etc.) The closer to the road the bigger the effect. Royal College of Physician data suggests that 36,000 people per year die from air pollution in UK. 

What do you think about the ratio of Clenil to Salbutamol?

She is using more SABA inhalers than is appropriate (using more than 3 per year should trigger a review of her asthma). She is not receiving/requesting enough Clenil to act as a treatment / preventer for her asthma. It might be appropriate to consider a MART inhaler so that she receives both LABA and ICS with each dose.

How good is asthma care in UK compared to comparable countries?

UK asthma outcomes are poor compared to equivalent countries. The UK Asthma Death study demonstrated that most asthma deaths were preventable with better care. The national review of asthma deaths: what did we learn and what needs to change?.  The UK is also an outlier for use of pMDI using this type of inhaler much more (70%) than Sweden Denmark and Norway (13-40%)  which have better health outcomes.

Is cough syrup effective? What is the relevance of this request to planetary health?

Cough syrup is a black triangle medicine i.e. one that is established as having little clinical value in changing outcomes. Prescribing medications which do not work is wasteful and consumes resources so this is an example of overprescribing enlarging healthcare’s excessive carbon footprint.

How could this situation be prevented or the patient’s care improved whilst also improving the health of the planet?

Discuss patient understanding of her treatment, review her inhaler technique (the majority of users of pMDI use a technique more suited to DPI), offer options for treatment including ICS led inhalers and consider MART, ensure she understands the relevance of the road ( and that walking or cycling  in general will expose her to less air pollution than travelling in a car). Have a look at the Asthma toolkit resources for more information. 

A 36 year old male who has recently returned from Southern France now presents with a flu like illness. He describes feeling exhausted with a fever, rash and vomiting. He tells you he got bitten lots by mosquitoes when in Southern France, and feels just like on his gap year when lots of his friends got unwell in South East Asia.

What are the likely or possible causes?

The best fit is probably Dengue fever, though other possibilities include malaria and zika. It is also appropriate to consider non vector illnesses (flu and covid for instance). This scenario suggests that in the same way as clinicians have adapted to include Lyme’s disease as ticks have become endemic in UK (rather than isolated to the New Forest) climate change is bringing us new diseases which will have to be part of the differential diagnosis.

Do you know which types of mosquitoes are involved in these?

Aedes Aegypti is the main mosquito associated with Dengue (also with Zika). Anopheles is the group associated with Malaria.

What is the effect of planetary health changes on the distribution of mosquitoes?

Warmer temperatures are associated with an enlargement of the distribution of mosquitoes. So Aedes mosquitoes (not necessarily A Aegyptii) have developed a wider distribution over the last years. The latest data suggests it is introduced but not established in Kent and neighbouring areas in the UK and established in much of France and almost all of Germany. Data from 3-4 years earlier had a much smaller European distribution.

As many people getting dengue are asymptomatic it is likely that once Aedes is established Dengue will follow.

Malaria is not currently (2024) endemic in UK (though cases have been identified in people living close to major airports from mosquitoes imported in aircraft. There are reports of endemic malaria from France and Greece.

Virus carrying mosquitoes (Culex which is associated with West Nile virus) have been found as far north as Finland

Does increased heat change the speed of the reproduction of mosquitoes, or the amount that they feed/ bite?

In warmer climates mosquitoes have a faster rate of reproduction/shorter intergenerational period. The mosquitoes will also bite more actively in hotter weather (NB only female mosquitoes bite).

Case 3: Struggling to cope

20 year old old psychology student comes saying that she is not coping and worries about the climate and her / her family’s future. She’s thinking of stopping university as there is no point getting a degree if the world continues to get hotter. In the past she got very involved in eco activism but now she is thinking that there’s no point as big business and capitalism is so powerful. She is eating OK and sleep is 6 hours a night with some early waking.

Is this more likely to be depression, anxiety or an appropriate reaction to a difficult situation?

Her story suggests that she is experiencing Eco distress. This is not a mental health disorder but a rational response to the crisis we are in. (Some people use the term eco-anxiety which can be seen as a medicalisation of her issues and makes it easier to then reach for tablets as a “solution”). Eco-distress can encompass a wide range of emotions including anxiety, grief, despair, anger, hopelessness and feelings of overwhelm. It is important to validate rather than seeking to minimise or dismiss the feelings of those with this challenging situation.

How common is eco-distress?

It is common and getting more common. 59% extremely worried about climate and 84% at least moderately worried.

What approaches are likely to be effective in eco-distress?

There are several resources available to guide management these difficult emotions. Most contain 4 core elements:

1.Take action – Doing something positive helps us not to drown in despair

Living and acting according to our values is empowering and energising.

In this strange world where people around us seem oblivious to the threat we face, being aware of the crisis can feel isolating. Joining with others to work towards a shared positive vision of the future and take part in collective action nurtures hope, helps to validate your feelings and builds support around you.

2. Self-care

Pacing ourselves and accepting the limits of what we, as individuals, can achieve. Taking time for regeneration when we are struggling.

Accepting help from others and not feeling we must do everything ourselves.

Paying attention to our physical and mental wellbeing by making sure we are getting enough sleep, eating healthy diets, getting enough physical activity and making time to connect with the people, activities and places that nurture and recharge us. Re-connecting with nature has been found to be particularly beneficial (nature connectedness engagement with nature (green prescription) or water (blue prescription). Practising gratitude for ourselves, the people around us and the natural world that sustains us.

3. Nurture hope

Make time to read about hope-based, solutions-focused visions of the future, not just negative information.

4. Allow space to process distress and times to shut off from it

We often try to push away difficult feelings, but this can prevent us processing them so that they become disabling. Rather than try to avoid or ease these emotions, climate psychologists advise that we make time and space to accept and experience them without avoidance, denial or intellectualisation. This is best done in a safe space with a supportive group of trusted people. Equally it is important to make times not to think about it and to focus on people and activities we enjoy and renew us. Spending time in nature can help many people. 

Discussing her involvement with a group working with the environment is likely to be important, she may benefit from a different type of group. In addition The Resilience Project  works specifically with youth activists struggling with eco distress and burnout.

Other resources might include the Climate Psychology AllianceClimate Cafes – Ultimate resource for green and sustainable living | Speak your #ClimateTruth and The Royal College of Psychiatrists has produced a podcast and fact sheets for children and young people and for parents, carers, teachers and other adults who support young people.

If there is such severity that treatment with drugs needs to be considered this  should include full discussion of the carbon footprint of the treatment and comparison with non pharmacological options. 

Case 4: Stroke symptoms

An 80 year old man presents with sudden onset of one sided weakness of his face and slurred speech. He lives with his similarly aged wife in deprived neighbourhood. He has been on treatment with a thiazide and calcium channel blocker for hypertension. He was normally fit and well.

How does heat make people more likely to die directly and through its effects on the cardiovascular system?

Mammals respond to heat by vasodilation of the vessels, if there is prolonged significant vasodilation then the heart has to work harder to maintain blood flow around the body. This leads to an increased risk of heart attacks and strokes. This is a direct effect of heat, dehydration and renal impairment will be additional factors. 

Will his drugs have made this more or less likely?

Diuretics will add to the dehydration and Calcium channel blockers will increase the vasodilation, both exacerbating stress on the heart. There is currently (2024) little established advice in UK or internationally on drug holidays and heat though there is some guidance here. 

Off guidance possibilities might include patients taking their own blood pressure during hot spells and reducing specified BP treatments if the blood pressure is low. 

Is living in a deprived neighbourhood relevant to the stroke (and if so how?)

Deprived neighbourhoods are associated with much higher levels of air pollution and most UK (and European) cities have significantly higher air pollution than WHO guidelines. Air pollution is linked to higher risks of many diseases from cardiovascular disease to diabetes and dementia. 

Air pollution will act as an irritant triggering more asthma or rhinitis but small particulate matter (PM2.5) will become intracellular and this changes cell behaviour triggering a wider spread of diseases.

Air pollution will build up in cars (unless using specialist filters) so that the average levels of pollution exposure are higher for a commute by car than for the same journey by bike or walking

 Do you normally consider planetary health when you see somebody with a cardiovascular disease or stroke in hot weather?

Heat and it’s impacts are still not widely talked about in the consulting room. Clinicians are all taught to ask about tobacco use (which accounts for 8 million deaths every year) and alcohol (3 million every year) but air pollution is estimated to contribute to 6.7 million deaths per year 5.7 of these due to non communicable disease.

NB the UK death rate attributed to the cold is 13400 (12.21 to 3.22) compared to the spring and autumn periods.  Heat related deaths are significantly lower at 4,500 for 2022 .

Case 5: Recurrent hospital admissions

93 year old woman is living in a care home. She has severe vascular dementia and has had a previous stroke. Her swallowing is poor causing recurrent aspiration pneumonia. She is bedbound and has hoist transfers. She has been admitted to hospital for this, falls, and general deterioration / infections 5 times this year so far and 4 times last year.  She has a DNACPR form but no other advance care plan.  She is on 14 medications including antidiabetic medication, antihypertensives, anticholinergics, and statins. 

How much value is Betty getting from her repeated hospital admissions? 

It is unlikely that this is a dignified way to die but opinions on this will vary and hers/those with power of attorney are essential. There is a real risk that these admissions are causing her more harm from overdiagnosis, overtreatment, painful interventions, risk of delirium, falls, hospital acquired infections, deconditioning from lying in hospitals etc. This is a high carbon end of life where it is possible to argue that resources could be used more effectively for patients who are more likely to benefit from them.

Is it enough to have a DNACPR? What can be done to prevent admission and maintain dignity?  

Involving family, holistic and advance care planning can be valuable. RESPECT forms can help with this and are good practice in addition to DNACPR . Admissions avoidance. Think about comfort and dignity rather than prolonging life at all costs, especially when quality of life may be very poor. 

What are the patient and planetary implications of Betty medications?  

It is likely that some of her 14 meds are not necessary or positively dangerous e.g. statins as preventive drugs are unlikely to be appropriate. Drugs with an anticholinergic effect are likely to increase risk of falls and death so considering the anticholinergic burden is appropriate to improve her quality of life.  There are risks that some medication has been started to manage the effects of earlier treatments ( ‘cascade prescribing’ ) so looking to simplicity can be helpful.

How much of our NHS resources go into the last year of life?

10% of the total NHS costs are spent in the last year of life, and this is broadly similar in other developed countries. Almost 25% of costs are incurred in the last 3 years of life in UK suggesting that the costs relate to chronically ill people rather than last ditch attempts to save lives. The challenge is to work with patients and families to identify what is justified and important, and what is futile and harmful. 

Case 6: Diabetes and medications

68 year old obese man who has chronic pain from his osteoarthritis (on co-codamol 8/500 with some extra codeine at night) and depression (for which he’s on paroxetine), chronic reflux (which cimetidine controls well) and dermatitis (for which he has betamethasone, oilatum and a nightly chlorpheniramine), comes as his ‘diet controlled’ Diabetes is no longer controlled and his friend suggests he should be on Metformin.

Do you think that each of his medications is justified individually?

Many of his meds are not formulary first choices, There is little evidence for codeine for chronic pain. Cimetidine can be bought OTC which may make it popular with some prescribers. Some patients are worried by the total removal of acidity with PPIs. Paroxetine is commonly used, though not first choice of the SSRIs generally. Chlorpheniramine is quite sedating. These over prescribing issues cause planetary health harm and contribute to the 60% of primary care’s carbon footprint coming from medication. 

Can you guess which order they were added to the prescription?

Cascade prescribing describes the reality of meds being added to manage the side effects of earlier meds. Possibly his weight may have impacated his joint pain. The codeine given for pain relief made him less energetic (and less active) reducing his social life and leading to the Paroxetine, which is known to exacerbate acid reflux and so the cimetidine is added. At any point along the line his skin became itchier and so the chlorphenamine was added.

What side effect pattern do these medications have in common?

Anticholinergic burden (ACB)

(codeine =1, paroxetine 3, cimetidine 2, chlorphenamine 3, metformin 1) https://www.acbcalc.com/medicines

The higher the ACB score the higher the risk of mortality and effects on cognitive function. Clinicians prescribe more to those who are older and lower social class.

What ways could we support him to manage his conditions better? 

There is evidence for the effectiveness of green (outside in contact with the natural world) or blue (involving water) therapies as part of social prescribing to manage mild to moderate depression. 

Working with him to look at diet options which might help him to reduce his weight is also appropriate (as weight is potentially a cause of his issues).

NB there are financial issues with ideal diets like EAT Lancet diet as the proportion of disposable income involved means this is unaffordable in its entirety for many poorer people in UK. 

Resources for educators

If you would like to use these cases for teaching purposes please contact Greener Practice for access to a powerpoint and support in using this teaching approach: contact@greenerpractice.com. Cases and commentary written by Dr Mike Tomson (with support from Dr Hayley Pinto (Hopelessness) and Dr Veena Aggarwal (recurrent hospital admissions)) and designed for the website by Dr Tamsin Ellis for Greener Practice.