Scientific literature clearly states that a "calcium deficiency disease" due to a low calcium intake from natural diets simply does not exist. – quoted from John A. McDougall, McDougall’s Medicine

The American diet causes us to have blood which is too acidic. When blood becomes too acidic our bodies pull calcium from our bones and teeth to neutralize the acid and this results in bone loss or osteoporosis. To correct this problem diet changes are needed. It is necessary to cut back on all highly acidic foods.

Animal proteins are on of the most acid forming foods in existence and the biggest cause of high acid levels in most Americans. One reason dairy products are poor choices for calcium is because they contain excessive amounts of protein. Cow’s milk has over 3 times more protein than human mother’s milk. It was after all, designed for a calf that will weigh 300 pounds within a year of it’s birth. Low fat dairy products are highest in protein, so you may lower your fat intake but you will raise your blood acid level and this will contribute to bone loss. Skim milk, for example, contains almost twice the amount of protein than whole milk.

The cause of osteoporosis is NOT a lack of calcium in the diet, regardless of the advertising from the dairy industry. Populations that consume the highest amounts of calcium [such as in the USA] have the highest rates of osteoporosis.
The problem is that the dairy industry has set US standards for calcium consumption through lobbying efforts . The calcium scare that has been going on in this country is, without question, the biggest nutritional scam ever conceived.

Bones are like muscles. The single best thing you can do to prevent (and reverse) osteoporosis is to start exercising your bones, because a lack of physical activity is the primary cause of osteoporosis. This isn’t to say that diet is not a contributing factor.

There are lots of meat eaters with strong bones. This is because their activity levels strengthen their bones despite their bad diets. Did you ever notice that obese women and men never get osteoporosis? This is because their bodies get lots of weight bearing exercise just carrying their bodies around, regardless of their diet and calcium intake.

A recent study showed that varying levels of calcium intake, ranging from 500 to 1800 mg a day had absolutely no effect on bone strength. It was the exercise women got that was the key determinant in building strong bones. Don’t worry about calcium. do worry about exercise.

Cows don’t produce calcium. They’re simply storage systems for the calcium they get from the plants they eat. Plant foods will keep your blood acid levels in balance because they’re alkaline not acidic. Like protein, calcium is found in all plant foods and the amounts will easily satisfy both growing children and adults.
Milk (2% fat) has 245mg of calcium per 100 calories. Romaine lettuce has 257, broccoli has 387, spinach has 450.
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Both magnesium and vitamin D are essential to absorbing calcium and Vitamin K plays a big role in putting calcium in the bones and keeping it out of the soft tissues such as kidneys [stones] and arteries [arteriosclerosis].

Perhaps those with darker skin are able to produce more vitamin D from being in the sun? That alone could be a contributing factor.
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so, because it is genetic, then white people (who have only started to mix with other kinds of races about a century or two ago) have developed it within their race and have not had a chance to spread their jeans around enough yet that it deludes.
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