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Old 12-19-2003, 09:10 PM   #1
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Default This one'* for you Will

BOTTOMS UP

I share this wisdom with those who I wish to see succeed...

A herd of buffalo can only move as fast as the slowest buffalo, and when the herd is hunted, it is the slowest and weakest ones at the back that are killed first. This natural selection is good for the herd as a whole, because the general speed and health of the whole is maintained or even improved by the regular killing of the weakest members. In much the same way, the human brain can operate only as fast as the slowest brain cells through which the electrical signals pass.

Recent epidemiological studies have shown that while excessive intake of alcohol kills off brain cells, it attacks the slowest and weakest brain cells first. Thus, regular consumption of beer helps eliminate the weaker cells, constantly making the brain a faster and more efficient machine.

The result of this in-depth study verifies and validates the causal link between all-weekend parties and job related performance. It also explains why, after a few short years of leaving college and getting married, most professionals cannot keep up with the performance of the new graduates. Only those few that stick to the strict regimen of voracious alcoholic consumption can maintain the intellectual levels that they achieved during their college years.

So, this is a call to arms. As our country is losing its technological edge we should not shudder in our homes. Get back into the bars! Quaff that pint! Your company and country need you to be at your peak, and you shouldn't deny yourself the career that you could have. Take life by the bottle and be all that you can be!
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Old 12-19-2003, 09:18 PM   #2
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No wonder my IQ is higher than I expected it to be

I just wonder if I still have weak brain cells up there *grabs a beer*
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Old 12-20-2003, 09:56 PM   #3
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Here'* another one for Mr. WillWren:

http://www.crewdogs.com/Jokes/CARLIN...USTRAITING.WMV
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Old 12-22-2003, 06:54 PM   #4
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Old 12-22-2003, 06:56 PM   #5
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Looks like Mos!

Seriously, while recovering from each of my 9 hand surgeries, I was encouraged to drink beer to promote bone growth. Milk is actually the worst thing you can drink for that. The animal fats break down your bones faster than the calcium rebuilds it.

The dairy lobby doesn't want you to know that.
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Old 12-22-2003, 07:27 PM   #6
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Will, I'm a huge milk drinker! I've hit my bones hard a lot, but never broke any.

But seriously, I never heard of that before. Thank God I drank a lot of beer in my college days.
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Old 12-22-2003, 09:28 PM   #7
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Old 12-22-2003, 09:51 PM   #8
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Here is my source and what they say:

http://www.hsph.harvard.edu/nutritio...e/calcium.html



What'* Best For Your Bones?

They are almost inescapable--those advertisements pushing milk as the answer to strong bones. But does "got milk" really translate into "got strong bones?" The answer to this question is the subject of quite vigorous debate in health circles.

On the pro-milk side are those who believe that increased calcium intake--particularly in the form of the currently recommended three glasses of milk per day--will help prevent osteoporosis, the weakening of bones. Each year, osteoporosis leads to more than 1.5 million fractures, including 300,000 broken hips.

On the other side are those who believe that increased milk consumption will have little effect on the rate of fractures and fear that consuming too much calcium and too much milk may, in fact, cause harm. In addition, millions of Americans are lactose-intolerant--meaning they are unable to digest the sugar in milk--and following the current guidelines for milk consumption could cause them physical discomfort, while providing no clear benefit.

Which view is right? Well, the final answers still aren't in. But here is a summary of what'* currently known about calcium and its effects on the body.

What is calcium?

Calcium is a mineral that the body needs for numerous functions, including blood clotting, the transmission of nerve impulses, and the regulation of the heart'* rhythm. In particular, it provides structure: 99 percent of the calcium in the human body is stored in the bones and teeth. The remaining 1 percent is found in the blood and other tissues.

What are calcium sources?

The body gets the calcium it needs in two ways. One is by eating foods that have calcium, such as dairy products--which have the highest concentration per serving of highly absorbable calcium--and dark leafy greens or dried beans--which have varying amounts of absorbable calcium.

The other way the body gets calcium is by pulling it directly from its largest store of calcium, the bones. This happens when blood levels of calcium drop too low, usually when it'* been a while since having eaten a meal containing calcium. Ideally, the calcium that is "borrowed" from the bones will be replaced at a later point. But, this doesn't always happen. Most important, this payback can't be accomplished simply by eating more calcium.


What is osteoporosis?

Osteoporosis, or "porous bones," is the weakening of bones caused by a reduction in the actual amount of bone matter. Currently, over 25 million Americans have osteoporosis. People typically lose bone as they age, despite consuming the recommended intake of calcium necessary to maintain optimal bone health.

Achieving adequate calcium intake and maximizing bone stores during the time when bone is rapidly deposited (up to age 30) will not prevent bone loss later in life. The loss of bone with aging is due to several reasons, including genetic factors, physical inactivity and lower levels of circulating hormones (estrogen in women and testosterone in men).

Postmenopausal women account for 80 percent of all cases of osteoporosis because estrogen production declines rapidly at menopause. Of course, men are also at risk of developing osteoporosis, but they tend to do so 5-10 years later than women, since testosterone levels do not fall abruptly the way estrogen does in women. It is estimated that osteoporosis will cause half of all women over age 50 to suffer a fracture of the hip, wrist, or vertebra.


How can osteoporosis be slowed down?

There are a number of lifestyle factors that can lower the risk of osteoporosis, including:

Growing healthy bones in youth and early adulthood.
Getting regular exercise, especially weight-bearing and muscle strengthening exercise.
Getting adequate vitamin D, whether through diet, exposure to sunshine, or supplements.
Consuming enough calcium to reduce the amount the body has to borrow from bone.
Consuming adequate vitamin K, found in green-leafy vegetables.
Growing healthy bones

Bone development begins before birth and proceeds at its fastest during adolescence. Throughout life, however, bones are constantly being broken down and built up, a process called "remodeling." Bone is living tissue that is always being regenerated; bone cells called osteoblasts build bone, while other bone cells, called osteoclasts, remove bone.

Up to about age 30, in a healthy individual with adequate calcium intake and physical activity, bone production exceeds bone destruction. After that, destruction exceeds production. So to stem the tide of osteoporosis, it'* important to do two things. First, do whatever you can to make the strongest, densest bones possible during the first 30 years of life. Second, limit the amount of bone loss in adulthood.


Factors that can help you achieve this are:


Getting regular exercise

Physical activity that puts some strain or stress on bones causes the bones to retain and possibly even gain density throughout life. Cells within the bone sense this stress and respond by making the bone stronger and denser. Such "weight-bearing" exercises include walking, dancing, jogging, weightlifting, stair-climbing, racquet sports, and hiking.

Swimming is a useful form of exercise for the heart and cardiovascular system. But because water supports the bones, rather than putting stress on them, it'* not considered a good "weight-bearing" exercise for bone strength. In addition, physical activity doesn't strengthen all bones, just those that are stressed, so you need a variety of exercises or activities to keep all your bones healthy.

Another function of physical activity, probably at least as important as its direct effect on bone mass, is its role in increasing muscle strength and coordination. With greater muscle strength, one can often avoid falls and situations that cause fractures. Making physical activity a habit can help maintain balance and avoid falls.

Getting adequate vitamin D

Vitamin D plays a critical role in maintaining bone health. When blood levels of calcium begin to drop, the body responds in several ways. It promotes the conversion of vitamin D into its active form, which then travels to the intestines (to encourage greater calcium absorption into the blood) and to the kidneys (to minimize calcium loss in the urine).

For bone health, an adequate intake of vitamin D is no less important than calcium. Vitamin D is found in milk and vitamin supplements, and it can be made by the skin when it is exposed to sunlight in the summertime. But not all sunlight is created equal. Above 40 degrees latitude (north of San Francisco, Denver, Indianapolis, and Philadelphia), the winter sunlight isn't strong enough to promote vitamin D formation. Sunscreens also prevent the formation of vitamin D, although they are still recommended to reduce risk of sun-induced skin cancer and skin damage.

Getting adequate calcium

Despite the debates surrounding milk and calcium, one thing is clear: consuming adequate calcium--both for bone development and for non-bone functions--is key to reducing the risk of osteoporosis. However, we aren't sure what the healthiest or safest amount of dietary calcium is. Different scientific approaches have yielded different estimates, so it'* important to consider all the evidence.

Balance studies--which examine the point at which the amount of calcium consumed equals the amount of calcium excreted--suggest that an adequate intake is 550 mg/day. To ensure that 95 percent of the population gets this much calcium, the National Academy of Sciences established the following recommended intake levels:

1,000 mg/day for those age 19-50
1,200 mg/day for those age 50 or over
1,000 mg/day for pregnant or lactating adult women
But most balance studies are short-term and therefore have important limitations. To detect how the body adapts to different calcium intakes over a long period of time--and to get the big picture of overall bone strength--requires studies of longer duration.

The results from such long-term studies may be surprising to some. While they do not question the importance of calcium in maximizing bone strength, they have cast doubt on the value of consuming the large amounts currently recommended for adults.

In particular, these studies have reported that calcium doesn't actually appear to lower a person'* risk for osteoporosis. For example, Harvard'* large studies of male health professionals and female nurses, have found that individuals who drank one glass of milk (or less) per week were at no greater risk of breaking a hip or forearm than were those who drank two or more glasses per week. (1) Other studies have found similar results. (2)

Additional evidence also supports the idea that American adults may not need as much calcium as is currently recommended. For example, in countries such as India, Japan, and Peru where average daily calcium intake is as low as 300 mg/day (less than a third of the US recommendation for adults, ages 19-50), the incidence of bone fractures is quite low. Of course, these countries differ in other important bone-health factors as well--such as level of physical activity and amount of sunlight--which could account for their low fracture rates.

Ideally, these issues might be resolved by randomizing a large group of adults to get different amounts of calcium and following them to see how many would eventually break a bone. In fact, a few such studies have been conducted, but they have not provided clear results because they were small or of short duration, or they provided calcium in combination with vitamins, which could obscure the true effects of calcium.

Some other factors may also help lower the risk of osteoporosis:

Get enough vitamin K. Vitamin K, which is found mainly in green, leafy vegetables, likely plays an important role (or roles) in calcium regulation and bone formation. Getting one or more servings per day of broccoli, Brussels spouts, dark green lettuce, collard greens, or kale should give you all you need.
Take care with caffeine. Although the votes aren't all in, there is some evidence that drinking a lot of coffee--about four or more cups per day--can increase the risk of fracture. Caffeine tends to promote calcium excretion in urine.
Avoid too much protein. Getting too much protein can leach calcium from your bones. As your body digests protein, it releases acids into the bloodstream, which the body neutralizes by drawing calcium from the bones. Animal protein seems to cause more of this calcium leaching than vegetable protein does. (3)
Get enough vitamin A, but not too much. Long-associated with good vision, vitamin A has also been found to direct the process of borrowing and redepositing calcium in bone. However, too much preformed vitamin A can promote fractures. Avoid vitamin supplements that have a full RDA (5,000 IU) of vitamin A as preformed vitamin A, unless prescribed by your doctor.
Postmenopausal women may also want to talk to a health care provider about taking postmenopausal hormones or other medications that can strengthen bones. The estrogen in postmenopausal hormones can compensate for the drop in estrogen levels after menopause, helping to prevent--and perhaps even partially reverse--bone loss. But there are some risks involved with postmenopausal hormone use and talking to a health care provider about these is key.


Should you get calcium from milk?

Adequate calcium is unquestionably one part of a strategy for promoting bone health and lowering the risk of osteoporosis. When most people in the United States think of calcium, they immediately think of milk. But should this be so? Milk is actually only one of many sources of calcium, and there are some important reasons why milk may not be the best source for everyone. These include:


Lactose intolerance
Many people have some degree of lactose intolerance. For them, eating or drinking dairy products causes problems like cramping, bloating, gas, and diarrhea. These symptoms can range from mild to severe. Certain groups are much more likely to have lactose intolerance. For example, 90 percent of Asians, 70 percent of blacks and Native Americans, and 50 percent of Hispanics are lactose-intolerant, compared to only about 15 percent of people of Northern European descent.
One alternative for those who are lactose intolerant but who still wish to consume dairy products is to take a pill containing enzymes that digest milk sugar along with the dairy product, or to consume milk that has the lactase enzyme added to it.


High saturated fat content
Many dairy products are high in saturated fats, and a high saturated fat intake is a risk factor for heart disease. And while it'* true that most dairy products are now available in fat-reduced or nonfat options, the saturated fat that'* removed from dairy products is inevitably consumed by someone, often in the form of premium ice cream, butter, or baked goods.
Strangely, it'* often the same people who purchase these higher-fat products who also purchase the low-fat dairy products, so it'* not clear that they're making great strides in cutting back on their saturated fat consumption. For more information on dietary fats, click here.


Possible increased risk of ovarian cancer
High levels of galactose, a sugar released by the digestion of lactose in milk, have been studied as possibly damaging to the ovaries and leading to ovarian cancer. Although such associations have not been reported in all studies, there may be potential harm in consuming high amounts of dairy products. (4,5)


Possible increased risk of prostate cancer
A diet high in calcium has been implicated as a potential risk factor for prostate cancer. In a Harvard study of male health professionals, men who drank two or more glasses of milk a day were almost twice as likely to develop advanced prostate cancer as those who didn't drink milk at all. (6) Moreover, the association appears to be with calcium itself, rather than with dairy products in general.
Clearly, although more research is needed, we cannot be confident that high milk intake is safe.


The bottom line-recommendations for calcium intake and bone health

Adequate, lifelong dietary calcium intake is necessary to reduce the risk of osteoporosis. Consuming adequate calcium and vitamin D and performing regular, weight-bearing exercise are also important to build maximum bone density and strength. After age 30, these factors help slow bone loss, although they cannot completely prevent bone loss due to aging.

Milk and dairy products are a convenient source of calcium for many people. They are also a good source of protein and are fortified with vitamins D and A. At this time, however, the optimal intake of calcium as well as the optimal sources of calcium, are not clear. As noted earlier, the National Academy of Sciences currently recommends that people ages 19-50 consume 1,000 mg of calcium per day, and that those age 50 or over get 1,200 mg per day. Reaching 1200 mg per day would usually require drinking two to three glasses of milk per day over and above an overall healthy diet.

However, these recommendations are based on very short-term studies, and are likely to be higher than what people really need. Currently, there'* no good evidence that consuming more than one serving of milk per day in addition to a reasonable diet (which typically provides about 300 milligrams of calcium per day from nondairy sources) will reduce fracture risk. Because of unresolved concerns about the risk of ovarian and prostate cancer, it may be prudent to avoid higher intakes of dairy products.

At moderate levels, though, consumption of calcium and dairy products has been shown to have benefits beyond bone health, possibly lowering the risk of high blood pressure as well as colon cancer. (7,8,9) While the blood pressure benefits appear fairly small, the protection against colon cancer seems somewhat larger, and most of the latter benefit comes from having just one glass of milk per day. Getting more than this doesn't seem to lower risk any further.

For individuals who are unable to digest--or who dislike--dairy products and for those who simply prefer not to consume large amounts of such foods, other options are available. Calcium can also be found in dark green leafy vegetables, such as kale and collard greens, and in dried beans and legumes.

Calcium is also found in spinach and chard, but these vegetables contain oxalic acid, which combines with the calcium to form calcium oxalate, a chemical salt that makes the calcium less available to the body. Calcium (and vitamin D) can also be ingested as a supplement. However, we do not generally recommend calcium supplements for men because of questions about possible risks of prostate cancer. Antacids contain calcium as well, and some foods, such as orange juice, may be calcium-fortified.



Articles references

1. Owusu W, Willett WC, Feskanich D, Ascherio A, Spiegelman D, Colditz GA. Calcium intake and the incidence of forearm and hip fractures among men. J Nutr 1997; 127:1782-7.

2. Feskanich D, Willett WC, Stampfer MJ, Colditz GA. Milk, dietary calcium, bone fractures in women: A 12-year prospective study. Am J Public Health 1997; 87:992-997.


3. Feskanich D, Willett WC, Stampfer MJ, Colditz GA. Protein consumption and bone fractures in women. Am J Epidemiol 1996; 143:472-479.


4. Cramer DW. Lactase persistence and milk consumption as determinants of ovarian cancer risk. Am J Epidemiol 1989; 130:904-10.


5. Cramer DW, Willett WC, Bell DA, et al. Galactose consumption and metabolism in relation to the risk of ovarian cancer. Lancet 1989:66-71.


6. Giovannucci E, Rimm EB, Wolk A, et al. Calcium and fructose intake in relation to risk of prostate cancer. Cancer Res 1998; 58:442-447.


7. Cappuccio FP, Elliott P, Allender PS, Pryer J, Follman DA, Cutler JA. Epidemiologic association between dietary calcium intake and blood pressure: a meta-analysis of published data. Am J Epidemiol 1995; 142:935-45.


8. Hyman J, Baron JA, Dain BJ, et al. Dietary and supplemental calcium and the recurrence of colorectal adenomas. Cancer Epidemiol 1998; 7:291-295.


9. Martinez ME, Willett WC. Calcium, vitamin D, and colorectal cancer: a review of the epidemiologic evidence. Cancer Epidemiol Biomarkers Prev 1998; 7:163-168.




--------------------------------------------------------------------------------
The aim of the Harvard School of Public Health Nutrition Source is to provide timely information on diet and nutrition for clinicians, allied health professionals, and the public. The contents of this Web site are not intended to offer personal medical advice, which should be obtained from a health-care provider. The information does not mention brand names, nor does it endorse any particular products.
2003 President and Fellows of Harvard College.

HARVARD SCHOOL OF PUBLIC HEALTH
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Old 12-22-2003, 10:48 PM   #9
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Well that'* some interesting stuff. I know I have some pretty strong bones. Hopefully I won't get prostate cancer (I'm sure those that drink milk a lot don't get it from the milk/calcium primarily) With that being said, I just drank a quart of egg nog. I LOVE egg nog.
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Old 12-23-2003, 12:04 AM   #10
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wow..... that'* a lot to digest.... (hehe)

I like it..... why to drink more beer... and with New Years Eve coming... it'* a good time to get started.
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