Back in August I wrote Good chance you have sarcopenia, or ‘muscle loss’ and how I realized I was experiencing it. I just ran across this nice write up on Eatright, a website of the Academy of Nutrition and Dietetics which I thought would interest you.
Muscle is harder to build and maintain as we age. In fact, most of us start losing muscle around age 30, with a 3- to 8-percent reduction in lean muscle mass every decade thereafter.
This is due to lower testosterone levels in men and lower estrogen levels in women — both hormones that help build muscle — as well as changes in nerve and blood cells and the body not converting amino acids to muscle tissue as efficiently, among other factors. But muscle loss doesn’t have to be inevitable: For adult men and women, regular resistance training exercises are key to building and keeping muscle.
Strength Training and Health
Strength training is an important piece of the fitness equation. Men and women should participate in muscle strengthening activities that work the major muscle groups (legs, hips, back, chest, abdomen, shoulders and arms) at least two times each week. Examples of strength training include lifting weights, using resistance bands and doing push-ups, pull-ups and sit-ups. Even everyday activities such as carrying groceries, playing with your kids and gardening can strengthen muscles. Continue reading
Vitamin D has been called the rock star of vitamins. For an idea about all the good things our bodies get from vitamin D, check out these posts: How good is Vitamin D for you? Infographic, Vitamin D and your body – Harvard.
Exposure to bisphenol A (BPA) and other endocrine-disrupting chemicals (EDCs) may reduce levels of vitamin D in the bloodstream, according to a new study published in the Endocrine Society’s Journal of Clinical Endocrinology & Metabolism.
The study is the first to find an association between EDC exposure and vitamin D levels in a large group of U.S. adults. EDCs are chemicals or mixtures of chemicals that can cause adverse health effects by interfering with hormones in the body. The Society’s Scientific Statement on EDCs examined more than 1,300 studies that found links between chemical exposure and health problems, including infertility, obesity, diabetes, neurological problems and hormone-related cancers. Continue reading
I ran across this chart on the web and thought it was a super description of our muscle system and that exercises used to develop them.
Of course, you don’t build muscle just by eating. The anabolic effects of eating protein are doubled if combined with exercise, which is one of the reasons athletes are encouraged to refuel immediately after working out. But if you follow the advice to spread out your protein intake, then you don’t need to worry about the precise timing, according to Paddon-Jones.
Cooking with Kathy Man
Alex Hutchinson wrote in the Globe and Mail ……
Studying the human body isn’t rocket science – in some cases, it’s much harder.
“I tell my grad students that we can put a man on the moon, but we still can’t come to a consensus on how much protein to give him here on earth,” says Dr. Rajavel Elango, a researcher at the University of British Columbia’s School of Population and Public Health.
Elango and his colleagues are using a new measurement technique to rewrite assumptions about how much protein you need at different stages of life. But just getting the right amount isn’t enough: There’s a limit to how much protein your body can use at once, so to maximize muscle-building you need to spread your intake throughout the day – and for most Canadians, that means ramping up the protein content at breakfast and lunch.
Your muscles are…
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