I won’t speak for the globe, but it seems nearly everyone in
America grew up on milk. Milk with cereal, milk with cookies, milk in eggs, and
just plain ol’ milk in a glass. Most of us never questioned this norm, and have
carried it with us into adulthood. You can probably still replay those ‘Got Milk?” commercials in your memory! However, from a health standpoint there are
in fact more reasons NOT to drink milk than to drink it. Don’t take it from me,
ask Dr. Walter Willett who chairs the Department of Nutrition at the Harvard Chan
School. Let’s look at some key drawbacks he describes.
The Dark Side of Milk
1) Saturated Fat – A typical glass of whole milk contains 5
grams of saturated fat—similar to eating 4 strips of bacon! Saturated fat is strongly
linked to heart disease, which is the number one killer in the U.S. To avoid such
fat, you could opt for non-fat milk. But this still leaves you with drawback
#2.
2) Extra calories – Just 2 glasses of whole milk a day adds
300 calories to your diet! And unfortunately, those calories don’t substitute
for meals. That is, people don’t tend to eat less when they consume high
calorie beverages (i.e. juice, soda, milk). It just ends up being added calories.
With low- or non-fat milk, you’re still getting a bunch of extra calories. The
same, or worse, goes for café lattes I might add! Water is simply the best choice
for low calories and weight control.
3) Lactose intolerance – All babies are born with the
ability to digest milk. This makes perfect sense evolutionarily speaking. For
most, however, this ability is short lived, and by adulthood only about a
quarter of the world’s population maintains the ability to fully digest milk.
This is because the body stops producing an enzyme called lactase, which breaks
down milk sugar (lactose). In the U.S., about half of Hispanic Americans, 75%
of African Americans, and over 90% of Asian Americans cannot tolerate much
lactose—the consequence being nausea, bloating, cramps, and diarrhea.
4) Prostate Cancer – Diets high in dairy products have been
implicated as risk factors for prostate cancer. As of about 15 years ago, nine
separate studies had shown the strongest and most consistent dietary cause of
prostate cancer to be high milk or dairy product intake. In one study, men who drank
two or more glasses of milk per day were almost twice as likely to develop
prostate cancer.
5) Ovarian Cancer – When lactose from milk is digested, a
simple sugar called galactose is released. Although still inconclusive,
numerous studies have shown a link between galactose and ovarian cancer.
Well, what about calcium intake, bone density, and the benefits
of milk? In my next blog we’ll address this. You’ll learn why such perks don’t outweigh
the negatives.
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Dr. Shahir Masri
Environmental Health Scientist
