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“Milk is unnecessary”: Building strong bones by eating plants

“Milk is unnecessary”: Building strong bones by eating plants

Rick Scott in the gym building strong bones.

In 2009, I was part of a UCLA study comprised of cyclists and triathletes that looked at how endurance exercise impacted bone density, testosterone and the production of inflammatory cytokines produced during long, frequent periods of exercise. Some of my cycling teammates were enticed to sign up because the tests included a free body fat percentage scan, but it turned out that the DEXA scan’s most important feature for me was its ability to measure bone density. Of the 200 athletes tested, I had the worst (lowest) bone density. Having broken my pelvis twice in bike racing crashes prior to the DEXA scan, it wasn’t totally unexpected, but it did alarm the doctor conducting the study who urged me to see a doctor to get on prescription meds. I didn’t and five months later, I broke my hip in another bike race and was forced to address the osteopenia weakening my bones that would devolve further into full blown osteoporosis. I grew up in a household that believed drinking cow’s milk several times a day was all we needed to build strong bones so how did this happen to me?


Broken hip repaired with screws
Broken hip after a crash in a bike race.

Bone density issues often plague cyclists because it is a non-weight-bearing sport and cycling had been my primary form of exercise for several decades. Problems with bone density often occur with “small boned” people and since I weigh in at 132 pounds, that accurately describes my bone structure. So, I had a couple things working against me, but surely the cow’s milk that I drank daily would counteract all that, right?

The dairy industry preaches that we need to drink cow’s milk several times per day in order to get enough calcium and vitamin D to build and maintain strong bones. I drank plenty of it, often chugging a quart of chocolate milk after a workout because I saw pro and Olympic athletes in commercials and magazine ads doing it. But that ended up causing me gastric distress (I’ll spare you the gory details) and my bones were weak and broke easily anyway.

According to a study published by the British Medical Journal, hip fracture rates are highest in countries with the highest calcium consumption. Women who drink the 3+ glasses of milk per day recommended by the US Department of Agriculture increase their risk of hip fracture by 60%. How could this be?

The British Medical Journal’s research indicates that the milk sugar D-galactose promotes oxidative stress and inflammation, which are linked to decreased muscle and bone mass. Also, too much phosphorus, necessary for calcium absorption, is not beneficial. Cow’s milk is high in phosphorous, which may lead to calcium resorption, according to the Indian Journal of Clinical Biochemistry.

Instead of relying on cow’s milk, Amy Joy Lanou, author and chair and professor at the North Carolina Center of Health and Wellness at the University of North Carolina Asheville, advocates getting calcium from plants, pointing out that calcium ingested from a variety of plant-based sources is up to two times as bioavailable as calcium ingested from cow’s milk and dairy products such as yogurt and cheese. According to The American Journal of Clinical Nutrition, one cup of cooked kale has the same amount of absorbable calcium as one cup of cow’s milk. Lanou recommends eating calcium-rich foods such as kale, tofu, broccoli, turnip greens, mustard greens, bok choy, white beans, sesame seeds, tahini, kidney beans and almonds.

“People don’t know that they don’t need to have dairy to get calcium in the body. I think that’s a misconception out there. In a whole-foods, plant-based diet, you get all your nutrients if you eat it correctly and you can build strong bones just through a plant-based diet,” said Dr. Micah Yu, a rheumatologist, board certified internal medicine doctor and certified lifestyle medicine doctor based in Southern California.

Dr. Yu does recommend taking a vitamin D supplement. “The building blocks of bones is calcium and vitamin D. I tell my patients that everyone should at least have a normal vitamin D level. Even though we get a lot of sun, it’s still hard to get normal vitamin D levels.”

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What we don’t need is to increase our calcium intake to build strong bones, according to the World Health Organization. They advocate that countries like the US that have high rates of hip fractures from the overconsumption of calcium reduce the daily intake to 400-500 mg, which is far less than what the dairy industry has been telling us to get. The dairy industry recommends 1000 mg per day for adults, 1300 mg per day for adolescents and 800 mg per day for children. The calcium in dairy products is only 32% bioavailable and comes with the added risks of heart disease, prostate cancer and diabetes. Hence, too much calcium leaves us sick and with brittle bones.

Rick Scott in the gym building strong bones.
Rick Scott in the gym building strong bones by lifting weights several times per week.

A year after breaking my hip, I had to replace it and a couple years later, I started a two-year course of daily injections to build back my bone density from osteoporosis to normal. Simultaneously I added more weight-bearing exercise to my training program. It began with running and hiking, and eventually I returned to the ice as a hockey player. And of course, I continued lifting weights several times a week as I did prior to breaking my hip. During that process is when I switched from vegetarian to vegan, hence removing all dairy from my diet. A session with a nutritionist put my mind at ease when he reassured me that I was getting more than enough calcium from my plant-based diet. Enough so that I do not take calcium supplements. It turns out that the best way to build strong bones is to eat more fruit and vegetables.

“Evidence collected during the past 20 years shows that we need to rethink our strategies for building and maintaining strong bones throughout our lives,” said Lanou. “Milk is unnecessary.”

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