There is emerging data that prolonged sitting can
increase the risk of diabetes, heart disease, obesity, musculoskeletal
diseases and early death. The first inkling that sitting can be
injurious came when it was noticed that London bus drivers were twice as
likely to have myocardial infarction as their colleagues who were
conductors. A recent systematic review showed that the relative risk for
mortality due to a sedentary lifestyle was high (RR 1.45-1.49), and was
just lower than the relative risk of mortality due to smoking (RR=1.79).
An analysis of six studies seems to suggest that prolonged sitting more
than 30 minutes at a time and overall more than 7 hours of daily sitting
can be injurious to health. There is a linear relationship between
type-2 diabetes and sitting time, suggesting that any reduction of
sitting time will reduce the risk of diabetes.
A recent study (The SMArT study – Stand More AT Work)
conducted on employees of the National Health Services in the UK has
tried to evaluate whether certain interventions can reduce prolonged
sitting times. Participants received a height-adjustable work-station,
coaching sessions and motivational aids. Duration of sitting was
monitored using an accelerometer taped to their thigh. They were
encouraged to change from sitting to standing posture after every 30
minutes of continuous sitting. Evaluation revealed a reduction of
sitting times by up to 82 minutes by one year, better work performance
and mood, lower anxiety, and less musculoskeletal pains.
Office workers, including doctors, spend upto 70-80%
of their time in sitting posture. The writing on the wall is clear. We
must break up our sitting times with intermittent standing, walking or
other actions to improve long-term health. (BMJ. 2018;363:k3870)
Zika Virus in India
As of early November 2018, out of 2000 samples tested
for the Zika virus in Rajasthan, 159 have tested positive with a little
more than 20 in pregnant women. Most patients were asymptomatic. Around
25% have no specific symptoms of fever, headache, rash, muscle and joint
pains, or conjunctivitis.
Zika virus was first isolated from a monkey in the
Zika forests of Uganda in 1947. There was a huge epidemic in Central and
South America in 2015. It was then noticed that about 10% of infected
pregnant women delivered babies with microcephaly. In 2017, detailed
studies in mice brain suggested that somewhere around 2013, the virus
mutated resulting in a single change of serine to aspargine (S139) in
the viral polyprotein. This resulted in a strain that can infect and
damage mouse and human neural progenitor cells. However, this has not
been corroborated in further studies. A Lancet study published in 2017
also identified another mutation A188V to be linked to fetal
microcephaly.
The ICMR team which has completed genetic studies in
the virus currently isolated from Jaipur has confirmed that the A188V
mutation is not present in the current Indian strain; though, the S139
mutation is present.
Meanwhile efforts to contain the infection in Jaipur
and surrounding areas are continuing on a war footing, More than 1 lakh
households have been screened with 330 teams deployed to identify and
eliminate the Aedes mosquito larvae. (The Hindu 17 October, The
Economic Times 17 October 2018)
#MeToo in Medicine
Since October 2017, the #MeToo movement has swept the
fields of cinema, politics, journalism and academia. In medicine, the
most widely quoted figures came from a survey of clinicians/researchers
in the US by Reshma Jagsi and colleagues. In this study, 30% of women
reported having experienced sexual harassment as compared to 4% of men.
A balanced discussion in the Canadian Medical Association Journal
suggests that unprofessional behavior in medicine affects not just women
but permeates the entire hierarchical structure. Authors further stated
that: "A work climate that enables bullying, harassment, discrimination
and micro-aggressions can negatively affect a person’s health and career
pathway."
Another editorial in the NEJM discusses the indirect
consequences of the movement. Consequent to all the media attention,
some men in power in turn say they are afraid to be in mentoring
relations with women. What will that mean? Already women in leadership
positions in medicine are few and far between. In the US, though nearly
half of medical school graduates are women, only 16% of college deans
are women.
Not only are there fewer women at the top, they earn
less than men even after controlling for specialty, seniority, and
number of work hours. They are less likely than men to have mentors who
actively foster their careers and leave academic medicine at a higher
rate than men. Now efforts are being made to address these issues
The article discusses several ways in which these tricky problems can
be addressed with real-life examples. It concludes with some
recommendations to improve gender equity such as transparency in
compensation, encouraging mentorship, and providing flexibility in
structuring career paths. (NEJM 3 October 2018, NEJM 18 January 2018)