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At Daily Dose, we always believe in reaching for the kitchen cabinet before the medicine cabinet – which is why we’ve partnered with multiple thought leaders in the nutrition and wellness industry to offer a variety of meal programs that can fit anyone’s busy and active lifestyle. Meals by Dr. James DiNicolantonio is your key to easy and sustaiable weight loss.
What’s often not mentioned is that a high-salt diet also increases the absorption of calcium in the intestine—which basically offsets the higher urinary calcium excretion. Moreover, the increased urinary calcium excretion seems to only affect those who consume low levels of calcium (less than 1,000 milligrams per day). In other words, if you eat a normal recommended amount of dietary calcium, you don’t need to worry about the salt.
Despite this, salt is constantly blamed for increasing urinary excretion of calcium, bone fragility, and osteoporosis. However, in my book, The Salt Fix, I cover why many of our fears about salt are actually unfounded.
We’ve been targeting the wrong food. Around 10 million Americans have osteoporosis, increasing the risk of fractures leading to significant morbidity and mortality. While many factors contribute to osteoporosis and fractures, nutritional factors may be a leading cause.
Osteoporosis may have more to do with sugar than salt? Consuming sugar, like salt, increases urinary calcium loss. However, consuming sugar is also linked to a reduced activation of vitamin D. So this could potentially be decreasing calcium absorption. So, a diet high in sugar may drive both calcium and vitamin D deficiency. Overconsuming sugar may also harm bone health by causing high glucose levels, which can impair bone formation. Diabetics have been found to have lower bone quality, and a diet high in sugar increases the risk of diabetes. Can you see where this is headed? Regular consumption of soft drinks is associated with an increased risk for fractures, which may be due to the replacement of calcium-rich beverages. Over consuming sugars may even deplete the body of other nutrients and drive further intake of nutrient-poor sweets, whereas consuming more salt, if done correctly, can increase the intake of bone-strengthening bitter foods (such as greens, nuts, and seeds). What I’m saying is; sugar in the diet generally drives poor nutrition whereas salt is more likely to drive good nutrition. Sugar rich diets has also been found to decrease bone strength in growing rats. Similar harms have been noted with sodium depletion, including decreased bone growth and bone calcium levels. In fact, supplementing rats with more salt can help prevent osteopenia and osteoporosis.
The surprising solution for osteoporosis. Data collected from over 4,000 postmenopausal women suggests that consuming more salt is better for bone mineral density and fracture risk. One study concluded that “higher habitual sodium intake is not detrimental for bones in older women with adequate calcium intake.” It turns out that low-salt diets may actually harm our bones by causing magnesium and calcium loss in the urine, potentially leading to a loss of bone minerals and bone strength. One study in humans suggested that a low-salt diet depletes the body of calcium and magnesium. The authors suggested that when we go on a low-salt diet, sodium gets pulled from the bone in order to maintain normal blood sodium levels. Unfortunately, calcium and magnesium get pulled with the sodium. Basically, a low-salt diet may cause osteoporosis by stripping our bones of calcium, magnesium, and sodium. Low salt levels in the blood and poor glucose control are both associated with higher fracture risk. This again suggests that salt may help reduce fracture risk whereas sugar may increase fracture risk. When it comes to our bones, sugar seems to be guilty of the harms that salt is commonly blamed for. It’s time to ditch the sugar and welcome back the saltshaker (and whole natural foods) to the dinner table.
Dr. James DiNicolantonio
A cardiovascular research scientist and doctor of pharmacy at Saint Luke’s Mid America Heart Institute in Kansas City, Missouri, and author of The Salt Fix and Superfuel. A well-respected and internationally known scientist and expert on health and nutrition, he has contributed extensively to health policy and has even testified in front of the Canadian Senate regarding the harms of added sugars. Dr. DiNicolantonio serves as the Associate Editor of Nutrition and British Medical Journal’s (BMJ) Open Heart, a journal published in partnership with the British Cardiovascular Society. He is the author or coauthor of approximately 200 publications in the medical literature. He is also on the editorial advisory boards of several medical journals. He has shared his expertise on The Dr. Oz Show, The Doctors, and international news media outlets.
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