Environmental factors

Poor air leads to strokes

According to a Japanese study involving nearly 7,000 stroke patients, increased levels of fine particulate matter air pollution lead to increased risk of stroke. An increase in the total level of fine particulate matter air pollution by 10 μg/m3 is associated with a two percent rise in the risk of stroke. With a particle size of less than 2.5, the stroke risk at a pollution level of 10 μg/m3 is further increased to three percent.

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Carotenoids protect against skin cancer

As shown by a double-blind, placebo-controlled cross-over study from Germany, carotenoids such as lutein and lycopene provide protection from UV rays. 65 healthy volunteers were enlisted and these were studied over a total of 28 weeks in four different treatment groups.

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More sun for a healthy and long life

According to a prospective cohort study on nearly 30,000 Swedish women, those who actively and regularly expose themselves to the sun are less likely to suffer cardiovascular diseases and have a lower mortality rate. The participants, who were aged between 25 and 64 years at the beginning of the study, were followed-up for 20-years. Also of note - non-smokers who avoided sun exposure had a similar life expectancy to smokers with the highest level of sun exposure.

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Road traffic noise makes you ill

Frequent exposure to traffic noise increases the risk of cardiovascular disease and all-cause mortality. This is shown by a study of more than 8 million inhabitants of London, who were assessed for the effects of daytime and night-time road traffic noise. The adults who were 25 years of age or older showed a significantly higher level of all-cause mortality with increased daily noise. The elderly subjects aged 75 and over had an increased risk of stroke.

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More time in nature means less depression

A study from the United States of twins of the same sex concludes that access to green spaces and nature has a marked effect on mental health and significantly reduces the development of depression. The correlation is even stronger than is demonstrated by the influence of stress and anxiety on mental health.

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