micky wrote:
> Why do people make fun of trump for saying windmills cause cancer?
>
> Windmills really do cause cancer.

This is generally true:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3653647/

Canadian family physicians can expect to see increasing numbers of rural
patients reporting adverse effects from exposure to industrial wind
turbines (IWTs). People who live or work in close proximity to IWTs have
experienced symptoms that include decreased quality of life, annoyance,
stress, sleep disturbance, headache, anxiety, depression, and cognitive
dysfunction. Some have also felt anger, grief, or a sense of injustice.
Suggested causes of symptoms include a combination of wind turbine
noise, infrasound, dirty electricity, ground current, and shadow
flicker.1 Family physicians should be aware that patients reporting
adverse effects from IWTs might experience symptoms that are intense and
pervasive and might feel further victimized by a lack of caregiver
understanding.

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Background
There is increasing concern that energy generation from fossil fuels
contributes to climate change and air pollution. In response to these
concerns, governments around the world are encouraging the installation
of renewable energy projects including IWTs. In Ontario, the Green
Energy Act was designed, in part, to remove barriers to the installation
of IWTs.2 Noise regulations can be a considerable barrier to IWT
development, as they can have a substantial effect on wind turbine
spacing, and therefore the cost of wind-generated electricity.3
Industrial wind turbines are being placed in close proximity to family
homes in order to have access to transmission infrastructure.4

In Ontario and elsewhere,5 some individuals have reported experiencing
adverse health effects resulting from living near IWTs. Reports of
IWT-induced adverse health effects have been dismissed by some
commentators including government authorities and other organizations.
Physicians have been exposed to efforts to convince the public of the
benefits of IWTs while minimizing the health risks. Those concerned
about adverse effects of IWTs have been stereotyped as “NIMBYs” (not in
my backyard).6,7

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Global reports of effects
During the past few years there have been case reports of adverse
effects. A 2006 Académie Nationale de Médecine working group report
notes that noise is the most frequent complaint. The noise is described
as piercing, preoccupying, and continually surprising, as it is
irregular in intensity. The noise includes grating and incongruous
sounds that distract the attention or disturb rest. The spontaneous
recurrence of these noises disturbs the sleep, suddenly awakening the
subject when the wind rises and preventing the subject from going back
to sleep. Wind turbines have been blamed for other problems experienced
by people living nearby. These are less precise and less well described,
and consist of subjective (headaches, fatigue, temporary feelings of
dizziness, nausea) and sometimes objective (vomiting, insomnia,
palpitations) manifestations.8

A 2009 literature review prepared by the Minnesota Department of Health9
summarized case reports by Harry (2007),10 Phipps et al (2007),11 the
Large Wind Turbine Citizens Committee for the Town of Union (2008),12
and Pierpont (2009).13 These case studies catalogued complaints of
annoyance, reduced quality of life, and health effects associated with
IWTs, such as sleeplessness and headaches.9

In 2010, Nissenbaum et al used validated questionnaires in a controlled
study of 2 Maine wind energy projects. They concluded that “the noise
emissions of IWTs disturbed the sleep and caused daytime sleepiness and
impaired mental health in residents living within 1.4 km of the two IWT
installations studied.”14

Reports of adverse health effects15 and reduced quality of life16 are
also documented in IWT projects in Australia and New Zealand.

A 2012 board of health resolution in Brown County in Wisconsin formally
requested financial relocation assistance for “families that are
suffering adverse health effects and undue hardships caused by the
irresponsible placement of industrial wind turbines around their homes
and property.”17

An Ontario community-based self-reporting health survey, WindVOiCe,
identified the most commonly reported IWT-induced symptoms as altered
quality of life, sleep disturbance, excessive tiredness, headache,
stress, and distress. Other reported effects include migraines, hearing
problems, tinnitus, heart palpitations, anxiety, and depression.18 In
addition, degraded living conditions and adverse socioeconomic effects
have been reported. In some cases the effects were severe enough that
individuals in Ontario abandoned their homes or reached financial
agreements with wind energy developers.19

After considering the evidence and testimony presented by 26 witnesses,
a 2011 Ontario environmental review tribunal decision acknowledged IWTs
can harm human health:

This case has successfully shown that the debate should not be
simplified to one about whether wind turbines can cause harm to humans.
The evidence presented to the Tribunal demonstrates that they can, if
facilities are placed too close to residents. The debate has now evolved
to one of degree.20

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Indirect effects and annoyance
When assessing the adverse effects of IWTs it is important to consider
what constitutes human health. The World Health Organization (WHO)
defines health as “a state of complete physical, mental and social
well-being and not merely the absence of disease or infirmity.”21

Despite being widely accepted, the WHO definition of health is
frequently overlooked when assessing the health effects of IWTs.
Literature reviews commenting on the health effects of IWTs have been
produced with varying degrees of completeness, accuracy, and
objectivity.22 Some of these commentators accept the plausibility of the
reported IWT health effects and acknowledge that IWT noise and visual
effects might cause annoyance, stress, or sleep disturbance, which can
have other consequences. However, these IWT health effects are often
discounted because “direct pathological effects” or a “direct causal
link” have not been established. In 2010, the Ontario Chief Medical
Officer of Health released The Potential Health Impact of Wind Turbines,
which acknowledged that some people living near wind turbines report
symptoms such as dizziness, headaches, and sleep disturbance but
concluded “the scientific evidence available to date does not
demonstrate a direct causal link between wind turbine noise and adverse
health effects.”23 The lead author of the report,23 Dr Gloria Rachamin,
acknowledged under oath that the literature review looked only at direct
links to human health.24

Focusing on “direct” causal links limits the discussion to a small slice
of the potential health effects of IWTs. The 2011 environmental review
tribunal decision found that serious harm to human health includes
“indirect impacts (e.g., a person being exposed to noise and then
exhibiting stress and developing other related symptoms).”20

According to the night noise guidelines for Europe:

Physiological experiments on humans have shown that noise of a moderate
level acts via an indirect pathway and has health outcomes similar to
those caused by high noise exposures on the direct pathway. The indirect
pathway starts with noise-induced disturbances of activities such as
communication or sleep.25

Pierpont documented symptoms reported by individuals exposed to wind
turbines, which include sleep disturbance, headache, tinnitus, ear
pressure, dizziness, vertigo, nausea, visual blurring, tachycardia,
irritability, problems with concentration and memory, and panic episodes
associated with sensations of internal pulsation or quivering when awake
or asleep.13 The American Wind Energy Association and the Canadian Wind
Energy Association convened a panel literature review that determined
these symptoms are the “well-known stress effects of exposure to noise,”
or in other words, are “a subset of annoyance reactions.”26

Noise-induced annoyance is acknowledged to be an adverse health
effect.27–30 Chronic severe noise annoyance should be classified as a
serious health risk.31 According to the WHO guidelines for community
noise, “[t]he capacity of a noise to induce annoyance depends upon many
of its physical characteristics, including its sound pressure level and
spectral characteristics, as well as the variations of these properties
over time.”32 Industrial wind turbine noise is perceived to be more
annoying than transportation noise or industrial noise at comparable
sound pressure levels.33 Industrial wind turbine amplitude modulation,34
audible low frequency noise,35 tonal noise, infrasound,36 and lack of
nighttime abatement have been identified as plausible noise
characteristics that could cause annoyance and other health effects.

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Health effects in Ontario expected
Evidence-based health studies were not conducted to determine adequate
setbacks and noise levels for the siting of IWTs before the
implementation of the Ontario renewable energy policy. In addition,
provision for vigilance monitoring was not made. It is now clear that
the regulations are not adequate to protect the health of all exposed
individuals.

A 2010 report commissioned by the Ontario Ministry of the Environment
concludes:

The audible sound from wind turbines, at the levels experienced at
typical receptor distances in Ontario, is nonetheless expected to result
in a non-trivial percentage of persons being highly annoyed .…
[R]esearch has shown that annoyance associated with sound from wind
turbines can be expected to contribute to stress related health impacts
in some persons.37

Consequently, physicians will likely be presented with patients
reporting health effects.

Family physicians should be aware that patients reporting adverse
effects from IWTs might experience symptoms that are intense and
pervasive and that they might feel further victimized by a lack of
care-giver understanding. Those adversely affected by IWTs might have
already pursued other avenues to mitigate the health effects with little
or no success. It will be important to identify the possibility of
exposure to IWTs in patients presenting with appropriate clinical
symptoms.38

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Conclusion
Industrial wind turbines can harm human health if sited too close to
residents. Harm can be avoided if IWTs are situated at an appropriate
distance from humans. Owing to the lack of adequately protective siting
guidelines, people exposed to IWTs can be expected to present to their
family physicians in increasing numbers. The documented symptoms are
usually stress disorder–type diseases acting via indirect pathways and
can represent serious harm to human health. Family physicians are in a
position to effectively recognize the ailments and provide an empathetic
response. In addition, their contributions to clinical studies are
urgently needed to clarify the relationship between IWT exposure and
human health and to inform regulations that will protect physical,
mental, and social well-being.
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