When it comes to
improving my mood and sense of wellbeing, nothing works quite so easily as
spending some time outdoors, soaking up a spot of cosmic energy in the form of
sunshine. Either walking around the Barham Lake, digging in the vegetable
garden, kayaking down the river or just sitting outside on my deckchair eating
lunch, I find time outside is time well spent.
Last weekend’s
beautiful weather along with our annual Barham Koondrook Show on Friday evening
and all day Saturday and the monthly Koondrook Barham Farmers Market on the
bank of the Murray River Sunday morning, proved a magnificent combination and a
good excuse to get out into the fresh air.
After decades of being
warned how bad the sun was for us and how we must “slip, slop, slap” we are now
being warned of the dangers of vitamin D deficiency, of covering up too much
and wearing excessive amounts sunscreen.
Vitamin D combined
with calcium and exercise is essential for strong healthy bones, teeth and
muscles. Calcium cannot be fully absorbed by the body without vitamin D. With
many Australians these days spending more time inside than out, our overall
levels of vitamin D have fallen to such a degree that a Deakin University study
involving 11,000 people from around Australia, indicated nearly one third of
the population may be suffering from vitamin D deficiency.
Bone and muscle pain,
weak bones (osteoporosis), and a compromised immune system leading to an increased
risk of some cancers, heart disease, type two diabetes, infections and
depression are all possible outcomes of vitamin D deficiency. Not good news for
our aging population residing inside nursing homes, the large percentage of the
workforce who spend their entire working day indoors or our computer and
electrical gadget addicted children (playing an Xbox will not increase your
vitamin D levels…)
Vitamin D is found in small quantities in a
few foods (eg fatty fish - salmon, herring, mackerel, liver, eggs, fortified
foods). However adequate vitamin D levels are unlikely to be achieved through
diet alone.
Luckily, for most of
us it is relatively easy to obtain an ample amount of vitamin D by exposing our
skin to sunlight while maintaining a sensible balance between sun exposure and
protection against skin cancer. We just need to make it a regular habit.
During summer months
when the UV radiation is highest, a mere five to ten minutes a day of sunshine
on our bare un-sunscreened arms, hands and face (around 15% of our body’s
surface), is enough. When UV radiation is lower during the winter months you
need longer in the sun (as do people with darker skins) but even then, a quick
ten to fifteen minutes each day or thirty minutes three times a week, will
stand you in good stead.
Daily outdoor exercise
(as well as my personal favourite: al fresco dining) can assist with the body’s
production of vitamin D… bring on summer and the backyard barbeque I say.