A recent study shows that brisk walks boost memory in older adults. And makes your hippocampus swell visibly on MRI. I bet this also applies to younger people.
The hippocampus is a worm-like structure deeply buried in your brain that is involved in memory formation. In Alzheimer, it is the part of your brain that will show the first signs of degeneration. A youthful hippocampus gives you mental plasticity, the opposite of which would be the obnoxious inflexibility that some older people show. About six to nine miles a week in this study was linked to better brain function. Walking even more did not seem to have more effect on the brain.
It comes down to walking ten minutes in one direction, turning around and walking back ten minutes, which can be done during lunch hour.
Another study showed that people who walk faster live longer. That bodes badly for me – I am a slow poke. But we can safely deduct that people who don’t walk will not make it long at all.
Walking also boost mood. If I would be a moody person (which I am not), I would do three things: go for a daily walk during daylight, end every hot shower with a cold one, and take herbal preparations – in women particularly, herbs against PMS or helping with post-menopause. Not to mention that I would turn to fresh, nourishing food and away from junk.
Walking per se is good for you. Two other studies have shown, that the effect is even better if you walk on uneven surface – like on pebbles, at a beach or in hilly terrain. Walking on pebbles decreases high blood pressure, and makes you less likely to get Parkinson’s. Using more muscles and consequently more brain can explain these results.
The most dramatic effect, I think, that daily walking can have – besides on memory, longevity, hypertension, Parkinson’s and mood – is that light boost vitamin D production under your skin – even if it is just the pale little area of your face reaping the rays. Vitamin D has become an important research focus as it wards off bone loss, cancer, multiple sclerosis and infections.
Walking will also lead to less weight and fight the dreaded metabolic syndrome (diabetes, high blood fats and hypertension) better sleep – all exercise does. And better sleep has been shown to increase overall performance, mood and resistance to infections.
In New England presently, walking the icy streets among huge snow banks is not that enticing. But I bet snow shoveling has all the above benefits, too – if you avoid hurting your back and don’t slip on the ice. At least I hope. Because I spend the morning digging out our walkway and garage driveway. At least this I know: The cold stimulus is a trigger for better immune function: Snow-shoveling in freezing temperatures improves my ability to better fend off flu and the common cold. Read More
Blog: On Health. On Writing. On Life. On Everything.
The Next Swine Flu Season
September 29, 2010
A panel of scientists have concluded that given the high level of immunity in the world wide population, the relative mildness of the H1N1 flu and the low probability that it might mutate to something much more threatening, the next flu season does not need to be marred by fears.
So, don’t fear! Get enough sleep, eat your veggies and enjoy your life! Read More
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The Doctor Is Sick
May 15, 2010
I have a cold. A bad cold, not a flu. With humiliating running nose, headaches and general crabbiness.
You might think doctors should not get sick, especially not natural doctors. I couldn’t agree more. But here I am finding myself in bed, unkempt, headachy, sleeping, reading (“The Elegance of the Hedgehog, by Muriel Barberry – marvelous!), sleeping again – and suddenly I feel happy.
I needed this. I needed the quiet, the no-demand, the thinking break.
See, most of the time, we are social animals, defined by what we do with others, for others. But there is, deep down, this other part of ourselves: the unsocial part, the pure soul-being. The part that asks why we are here on Earth.
As a sick child, I was bedridden often. All I did was reading and dreaming.
Paul Gauguin’s most famous picture is a huge canvas, covering a wall, not of a home but fit for a railroad station. It is called: “Where Do We Come From? What Are We? Where Are We Going?” It hangs here in Boston in the Fine Arts Museum and shows South Sea people in their natural state, in their natural habitat. It was this picture that Gauguin hurled into the face of well-heeled, fin-de-siècle Paris.
Those ultimate questions that cannot really be answered have to be asked, anyway. And it seems to me, I do that best in bed, alone, not quite fresh smelling, and confronted with my mortality – yes, even if it is just a banal cold that hit me. I know, in a day or two, I will re-emerge into real life full of energy, deep thoughts for writing and good intentions. I needed this renewal. Read More