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  • "Why Do Milk Drinkers Live Shorter Lives on Average?"

  • In my video on milk and bones,

  • I discussed this set of studies,

  • following a hundred thousand people for up to two decades,

  • finding a 60% higher risk of hip fracture

  • among women who drank a lot of milk.

  • The researchers suggested it might be due to the galactose,

  • which is a breakdown product of the milk sugar lactose,

  • based on the fact that people with high levels in their blood,

  • because they were born with an inability to detoxify the stuff,

  • can end up with weakened bones.

  • But that's not all galactose can do.

  • Galactose is what scientists use

  • to cause accelerated aging in lab animals,

  • since it's so successful at mimicking aging

  • by inducing degenerative changes in the brain,

  • heart, lungs, liver, kidney, etc.

  • "Life-shortened animals showed neurodegeneration,

  • mental retardation, and cognitive dysfunction,

  • diminished immune responses

  • and a reduction of reproductive ability."

  • And it doesn't take much,

  • just the human equivalent

  • of one to two glasses worth of milk a day.

  • However, humans aren't rodents.

  • For example, we've known for nearly a century

  • that you can cause cataracts in rats

  • by feeding them lots of lactose or galactose,

  • but the epidemiological data is mixed

  • as to whether dairy is doing the same in people.

  • The Swedish studies didn't just look at bone, though,

  • but milk and mortality.

  • More milk was associated with more death.

  • In women, three glasses of milk a day

  • was associated with nearly twice the risk of dying prematurely.

  • The medical journal editorial

  • accompanying the study emphasized that,

  • given the rise in milk consumption

  • around the world,

  • the "role of milk in mortality

  • needs to be established definitively now."

  • With the then-largest-ever study on milk intake and mortality

  • suggesting such adverse effects,

  • Harvard researchers stepped in with three of their cohorts

  • to form a study twice as big

  • to see if the earlier findings were just a fluke.

  • Following more than 200,000 men and women

  • for up to three decades,

  • they confirmed the bad news.

  • Those who consumed more dairy

  • lived significantly shorter lives.

  • Every half serving more of regular milk a day

  • was associated with 9% increased risk of dying

  • from cardiovascular disease,

  • 11% increased risk of dying from cancer,

  • and an 11% increased risk of dying

  • from all causes put together.

  • This is all the more remarkable

  • since milk drinking is typically associated

  • with healthier habits,

  • like more exercise and less smoking and drinking,

  • though they did try to control for all these factors.

  • Of course it does matter what you eat instead.

  • This Harvard analysis published

  • in the New England Journal of Medicine,

  • found that swapping dairy for meat,

  • red meat, poultry, or fish,

  • would not be expected to do your body any favors,

  • and you would be expected to live longer eating dairy

  • than eggs or processed meat.

  • It's only when you swap dairy

  • for plant-based sources of protein

  • did they find a significant drop in mortality risk.

  • When all of the milk and mortality studies

  • are put together,

  • it appears the excess mortality risk

  • is limited to regular as opposed to low-fat, like skim milk.

  • This suggests it may be more of a saturated fat issue,

  • though that doesn't explain why soured, or fermented milk

  • appears to have the opposite impact.

  • So maybe it's both the butterfat and the galactose.

  • A randomized crossover study of low-fat dairy,

  • fermented dairy, and unfermented dairy

  • found that study subjects

  • had significantly higher IL-6 inflammation levels

  • during unfermented regular dairy weeks

  • compared to when they were switched to either

  • the fermented or low-fat dairy products.

  • The fermentation process can eliminate some of the galactose.

  • As we age, our ability to detoxify galactose

  • declines by as much as 40%,

  • which would make it even more important

  • to avoid dairy later in life

  • if indeed galactose is the culprit.

  • But if galactose does its dirty work

  • through oxidation and inflammation,

  • might increased fruit and vegetable intake

  • help mediate some of the harm?

  • In animals, galactose-induced aging

  • can be slowed by fruit and vegetable consumption.

  • For example, feeding rats blueberries

  • can decrease the brain damage induced by the milk sugar.

  • Might it be able to help

  • with the higher levels of oxidative stress

  • and inflammation found among human milk drinkers?

  • Unfortunately, women drinking three or more glasses of milk

  • a day had more than twice the risk of hip fractures

  • compared to women drinking less than a glass a day

  • regardless of whether they were eating more, or less,

  • fruits and vegetables.

  • But, those high milk consumers

  • consuming five or more servings of fruits and vegetables a day

  • did reduce their chance of dying prematurely

  • to just 60% greater than those drinking less milk,

  • so antioxidant rich foods

  • may be able to modify the elevated death rate

  • associated with high milk consumption.

  • Highly influential advocacy organizations,

  • such as the US National Osteoporosis Foundation

  • or the Europe-based

  • International Osteoporosis Foundation,

  • continue to push dairy, drugs, and calcium supplements,

  • despite the countervailing evidence that I've reviewed.

  • Why do they keep pushing dairy, drugs, and supplements?

  • Perhaps because their objectivity is compromised

  • by the influence of their commercial sponsors

  • that include companies that market, you guessed it,

  • dairy, drugs, and supplements.

  • Most recent reviews on dairy and osteoporosis

  • in the English-language medical literature

  • were found to be written

  • by those with ties to the dairy industry.

  • The primary justification for inclusion of dairy

  • in federal nutrition recommendations

  • is based on purported bone benefits

  • that are not supported by the available evidence.

  • What if dietary guidelines were fashioned

  • without commercial influence?

  • In 2019, Canada decided to exclude industry reports

  • and stick to the science

  • in the formation of their new dietary guidelines.

  • What a concept.

  • Major changes include the new emphasis

  • on plant-based food intake, limiting junk,

  • and...the removal of the dairy food group.

"Why Do Milk Drinkers Live Shorter Lives on Average?"

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Why Do Milk Drinkers Live Shorter Lives on Average?

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    林宜悉 發佈於 2024 年 02 月 27 日
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