Fitness Blog Covering Topics Of Interest Monday, April 22 2013
Our bodies can obtain vitamin D from diet and make it from sun exposure. Even with these two routes for obtaining vitamin D, however, inadequate vitamin D is common, and deficiencies can be found on all continents, in all ethnic groups, and across all ages—a major concern, given the many ways that vitamin D helps protect our health. (
) There are a number of factors that increase the risk of having inadequate vitamin D, among them, lifestyle, sunscreen use, geographic location, skin tone, age, and body weight.
The bottom line: Low vitamin D can be found in all ethnic and age groups, around the world, for a host of reasons. Even if you are taking a standard multiple vitamin, the amount of vitamin D in most vitamins (400 IU) is not enough to prevent low blood levels. If you suspect that you are at risk of vitamin D deficiency, you can ask your physician to order a blood test for vitamin D. Tuesday, March 05 2013
Vitamin D Deficiency: A Global ConcernIf you live north of the line connecting San Francisco to Philadelphia and Athens to Beijing, odds are that you don’t get enough vitamin D. The same holds true if you don’t get outside for at least a 15-minute daily walk in the sun. African-Americans and others with dark skin, as well as older individuals, tend to have much lower levels of vitamin D, as do people who are overweight or obese. Worldwide, an estimated 1 billion people have inadequate levels of vitamin D in their blood, and deficiencies can be found in all ethnicities and age groups. ( - ) Indeed, in industrialized countries, doctors are even seeing the resurgence of rickets, the bone-weakening disease that had been largely eradicated through vitamin D fortification. ( - )Why are these widespread vitamin D deficiencies of such great concern? Because research conducted over the past decade suggests that vitamin D plays a much broader disease-fighting role than once thought. Being “D-ficient” may increase the risk of a host of chronic diseases, such as , , , and multiple sclerosis, as well as , such as and even the .Currently, there’s scientific debate about how much vitamin D people need each day. The Institute of Medicine, in a long-awaited report released on November 30, 2010 recommends tripling the daily vitamin D intake for children and adults in the U.S. and Canada, to 600 IU per day. () The report also recognized the safety of vitamin D by increasing the upper limit from 2,000 to 4,000 IU per day, and acknowledged that even at 4,000 IU per day, there was no good evidence of harm. The new guidelines, however, are overly conservative about the recommended intake, and they do not give enough weight to some of the latest science on vitamin D and health. For bone health and chronic disease prevention, many people are likely to need more vitamin D than even these new government guidelines recommend. Vitamin D Sources and FunctionVitamin D is both a nutrient we eat and a hormone our bodies make. Few , so the biggest dietary sources of vitamin D are fortified foods and . Good sources include dairy products and breakfast cereals (both of which are fortified with vitamin D), and fatty fish such as salmon and tuna.For most people, the best way to get enough vitamin D is taking a supplement, but the level in most multivitamins (400 IU) is too low. Encouragingly, some manufacturers have begun adding 800 or 1,000 IU of vitamin D to their standard multivitamin preparations. If the multivitamin you take does not have 1,000 IU of vitamin D, you may want to consider adding a separate vitamin D supplement, especially if you don’t spend much time in the sun. Talk to your healthcare provider. Two forms of vitamin D are used in supplements: vitamin D2 (“ergocalciferol,” or pre-vitamin D) and vitamin D3 (“cholecalciferol”). Vitamin D3 is chemically indistinguishable from the form of vitamin D produced in the body. The body also manufactures vitamin D from cholesterol, through a process triggered by the action of sunlight on skin, hence its nickname, “the sunshine vitamin.” Yet some people do not make enough , among them, people who have a darker skin tone, who are overweight, who are older, and who cover up when they are in the sun. (Correctly applied sunscreen reduces our ability to absorb vitamin D by more than 90 percent. (8) And not all sunlight is created equal: The sun’s ultraviolet B (UVB) rays—the so-called “tanning” rays, and the rays that trigger the skin to produce vitamin D—are stronger near the equator and weaker at higher latitudes. So in the fall and winter, people who live at higher latitudes (in the northern U.S. and Europe, for example) can’t make much if any vitamin D from the sun. (8) Vitamin D helps ensure that the body absorbs and retains calcium and phosphorus, both critical for building bone. Laboratory studies show that vitamin D can reduce cancer cell growth and plays a critical role in controlling infections. Many of the body’s organs and tissues have receptors for vitamin D, and scientists are still teasing out its other possible functions. New Vitamin D Research: Beyond Building BonesSeveral promising areas of vitamin D research look far beyond vitamin D’s role in building bones. And, as you might expect, the news media release a flurry of reports every time another study links vitamin D to some new ailment. These reports can be confusing, however, because some studies are stronger than others, and any report needs to be interpreted in the light of all other evidence. More answers may come from randomized trials, such as the (VITAL), which will enroll 20,000 healthy men and women to see if taking 2,000 IU of vitamin D or 1,000 mg of fish oil daily lowers the risk of cancer, heart disease, and stroke.Here, we provide an overview of some of the more promising areas of vitamin D research, highlighting the complex role of vitamin D in disease prevention—and the many unanswered questions that remain. Vitamin D and Bone and Muscle StrengthSeveral studies link low vitamin D levels with an increased risk of fractures in older adults, and they suggest that vitamin D supplementation may prevent such fractures—as long as it is taken in a high enough dose. ( - )A summary of the evidence comes from a combined analysis of 12 fracture prevention trials that included more than 40,000 elderly people, most of them women. Researchers found that high intakes of vitamin D supplements—of about 800 IU per day—reduced hip and non-spine fractures by 20 percent, while lower intakes (400 IU or less) failed to offer any fracture prevention benefit. ( )Vitamin D may also help increase muscle strength, which in turn helps to prevent falls, a common problem that leads to substantial disability and death in older people. ( - ) Once again, vitamin D dose matters: A combined analysis of multiple studies found that taking 700 to 1,000 IU of vitamin D per day lowered the risk of falls by 19 percent, but taking 200 to 600 IU per day did not offer any such protection. ( )A recent vitamin D trial drew headlines for its unexpected finding that a very high dose of vitamin D increased fracture and fall risk in older women. ( ) The trial’s vitamin D dose—500,000 IU taken in a once-a-year pill—was much higher than previously tested in an annual regimen. After up to 5 years of treatment, women in the vitamin D group had a 15 percent higher fall risk and a 26 percent higher fracture risk than women who received the placebo.It’s possible that giving the vitamin D in one large dose, rather than in several doses spread throughout the year, led to the increased risk. ( ) The study authors note that only one other study—also a high-dose, once-a-year regimen—found vitamin D to increase fracture risk; no other studies have found vitamin D to increase the risk of falls. Furthermore, there’s strong evidence that more moderate doses of vitamin D taken daily or weekly protect against fractures and falls—and are safe.So what is the significance of this study for people who want to take vitamin D supplements? A reasonable conclusion would be to continue taking moderate doses of vitamin D regularly, since these have a strong safety record, but to avoid extremely high single doses. This recent finding does present a challenge to scientists who will work to understand why the extreme single dose appears to have adverse effects. Vitamin D and Heart DiseaseThe heart is basically a large muscle, and like skeletal muscle, it has receptors for vitamin D. ( ) So perhaps it’s no surprise that studies are finding vitamin D deficiency may be linked to heart disease. The Health Professional Follow-Up Study checked the vitamin D blood levels in nearly 50,000 men who were healthy, and then followed them for 10 years. ( ) They found that men who were deficient in vitamin D were twice as likely to have a heart attack as men who had adequate levels of vitamin D. Other studies have found that low vitamin D levels were associated with higher risk of heart failure, sudden cardiac death, stroke, overall cardiovascular disease, and cardiovascular death. ( - ) How exactly might vitamin D help prevent heart disease? There’s evidence that vitamin D plays a role in controlling blood pressure and preventing artery damage, and this may explain these findings. ( ) Still, more research is needed before we can be confident of these benefits.Vitamin D and CancerNearly 30 years ago, researchers noticed an intriguing relationship between colon cancer deaths and geographic location: People who lived at higher latitudes, such as in the northern U.S., had higher rates of death from colon cancer than people who live closer to the equator. ( ) Many scientific hypotheses about vitamin D and disease stem from studies that have compared solar radiation and disease rates in different countries. These can be a good starting point for other research but don’t provide the most definitive information. The sun’s UVB rays are weaker at higher latitudes, and in turn, people’s vitamin D levels in these high latitude locales tend to be lower. This led to the hypothesis that low vitamin D levels might somehow increase colon cancer risk. (Since then, dozens of studies suggest an association between low vitamin D levels and increased risks of colon and other cancers. ( , ) The evidence is strongest for colorectal cancer, with most (but not all) observational studies finding that the lower the vitamin D levels, the higher the risk of these diseases. ( - ) Vitamin D levels may also predict cancer survival, but evidence for this is still limited. ( ) Yet finding such associations does not necessarily mean that taking vitamin D supplements will lower cancer risk.The trial will look specifically at whether vitamin D supplements lower cancer risk. It will be years, though, before it releases any results. It could also fail to detect a real benefit of vitamin D, for several reasons: If people in the placebo group decide on their own to take vitamin D supplements, that could minimize any differences between the placebo group and the supplement group; the study may not follow participants for a long enough time to show a cancer prevention benefit; or study participants may be starting supplements too late in life to lower their cancer risk. In the meantime, based on the evidence to date, 16 scientists have circulated a “call for action” on vitamin D and cancer prevention: ( ) Given the high rates of vitamin D deficiency in North America, the strong evidence for reduction of osteoporosis and fractures, the potential cancer-fighting benefits of vitamin D, and the low risk of vitamin D supplementation, they recommend widespread vitamin D supplementation of 2000 IU per day. ( )Vitamin D and Immune FunctionVitamin D’s role in regulating the immune system has led scientists to explore two parallel research paths: Does vitamin D deficiency contribute to the development of multiple sclerosis, type 1 diabetes, and other so-called “autoimmune” diseases, where the body’s immune system attacks its own organs and tissues? And could vitamin D supplements help boost our body’s defenses to fight infectious disease, such as tuberculosis and seasonal flu? This is a hot research area and more findings will be emerging. Vitamin D and Multiple Sclerosis: Multiple sclerosis (MS) rates are much higher far north (or far south) of the equator than in sunnier climes, and researchers suspect that chronic vitamin D deficiencies may be one reason why. One prospective study to look at this question found that among white men and women, those with the highest vitamin D blood levels had a 62 percent lower risk of developing MS than those with the lowest vitamin D levels. ( ) The study didn’t find this effect among black men and women, most likely because there were fewer black study participants and most of them had low vitamin D levels, making it harder to find any link between vitamin D and MS if one exists. Vitamin D and Type 1 Diabetes: Type 1 diabetes is another disease that varies with geography—a child in Finland is about 400 times more likely to develop it than a child in Venezuela. ( ) Evidence that vitamin D may play a role in preventing type 1 diabetes comes from a 30-year study that followed more than 10,000 Finnish children from birth: Children who regularly received vitamin D supplements during infancy had a nearly 90 percent lower risk of developing type 1 diabetes than those who did not receive supplements. ( ) Other European case-control studies, when analyzed together, also suggest that vitamin D may help protect against type 1 diabetes. ( ) No randomized controlled trials have tested this notion, and it is not clear that they would be possible to conduct. Vitamin D, the Flu, and the Common Cold: The flu virus wreaks the most havoc in the winter, abating in the summer months. This seasonality led a British doctor to hypothesize that a sunlight-related “seasonal stimulus” triggered influenza outbreaks. ( ) More than 20 years after this initial hypothesis, several scientists published a paper suggesting that vitamin D may be the seasonal stimulus. ( ) Among the evidence they cite:
A recent randomized controlled trial in Japanese school children tested whether taking daily vitamin D supplements would prevent seasonal flu. ( ) The trial followed nearly 340 children for four months during the height of the winter flu season. Half of the study participants received pills that contained 1,200 IU of vitamin D; the other half received placebo pills. Researchers found that type A influenza rates in the vitamin D group were about 40 percent lower than in the placebo group; there was no significant difference in type B influenza rates. This was a small but promising study, and more research is needed before we can definitively say that vitamin D protects against the flu. But don’t skip your flu shot, even if vitamin D has some benefit.Vitamin D and Tuberculosis: Before the advent of antibiotics, sunlight and sun lamps were part of the standard treatment for tuberculosis (TB). ( ) More recent research suggests that the “sunshine vitamin” may be linked to TB risk. Several case-control studies, when analyzed together, suggest that people diagnosed with tuberculosis have lower vitamin D levels than healthy people of similar age and other characteristics. ( ) Such studies do not follow individuals over time, so they cannot tell us whether vitamin D deficiency led to the increased TB risk or whether taking vitamin D supplements would prevent TB. There are also genetic differences in the receptor that binds vitamin D, and these differences may influence TB risk. ( ) Again, more research is needed. ( ) Vitamin D and Risk of Premature DeathA promising report in the Archives of Internal Medicine suggests that taking vitamin D supplements may even reduce overall mortality rates: A combined analysis of multiple studies found that taking modest levels of vitamin D supplements was associated with a statistically significant 7 percent reduction in mortality from any cause. ( ) The analysis looked at the findings from 18 randomized controlled trials that enrolled a total of nearly 60,000 study participants; most of the study participants took between 400 and 800 IU of vitamin D per day for an average of five years. Keep in mind that this analysis has several limitations, chief among them the fact that the studies it included were not designed to explore mortality in general, or explore specific causes of death. More research is needed before any broad claims can be made about vitamin D and mortality. ( )Sunday, February 10 2013
Preparation Time: 10 minutes Cooking Time: 3 minutes Serves: 4 This recipe is to make really healthy protein pancakes. The ingredients provided will make about 4 pancakes but you can make them how big or small you want. Ingredients
Steps
Wednesday, February 29 2012
After years of denying the health benefits of sunlight, conventional researchers are finally starting to recognize the important role that ultraviolet light plays in human health. Getting sunlight on your skin, research now shows, is extremely important for preventing and even reversing chronic diseases. I'm talking about prostate cancer, breast cancer, cervical cancer, mental depression, osteoporosis and even, to some extent, type 2 diabetes. The interactions between sunlight and body chemistry for these diseases are quite complex, and I'm not going to go into them all here, but let me give you the highlights.
Vitamin D is essential for calcium absorptionFirst, you most likely already know the importance of calcium for your health. If you don't have enough calcium circulating through your blood, you're going to have cardiovascular problems and you will probably end up with heart disease. Calcium is crucial for healthy nervous system function, as well.If you've read any of the promotional material about coral calcium and all the different diseases that calcium can prevent or even help cure, then you have a pretty good idea about some of the practical applications of calcium. Now, I don't think that calcium all by itself is going to reverse many chronic diseases, but without calcium, there's no question that you will be accelerating those diseases and reducing your lifespan. Here's the kicker: Without vitamin D in your small intestine, your body will not absorb calcium even if you take an excess of supplements. This is the single most important point, and I don't think I've ever been able to get this point across with enough emphasis. You must have vitamin D in your body in order to use calcium. So if you're out there taking coral calcium supplements or eating a lot of green leafy vegetables, but not getting sunlight or ultraviolet radiation on your skin, then you are probably not absorbing the calcium you are going to such great trouble to ingest.
Reversing osteoporosis with sunlightSunlight can actually reverse osteoporosis. A lot of senior citizens are taking calcium supplements but not getting sunlight, so the calcium is passing right through their bodies. As a result, they're losing bone mineral density. However, by adding vitamin D to the equation through sunlight (remember, your skin generates vitamin D in response to sunlight exposure), senior citizens can start assimilating calcium and rebuilding their bones.This is information that doesn't get told to senior citizens, and modern doctors don't even understand it. They think that you treat osteoporosis with drugs, which is ridiculous. The only thing you need in order to treat osteoporosis is sunlight, calcium and a little bit of physical exercise. You will rebuild bone mineral density very rapidly on that kind of program.
The bottom line: Get some sun on your skinMake sure that you're getting sunlight on your skin. If you do this one thing, and do it consistently, it will create such a positive health outcome. Sunlight will make a world of difference in your life. It will change your mood. It will change your biochemistry. It will enhance your bone mineral density, and it will help your body beat or prevent various forms of cancer.In fact, vitamin D is a key compound in the regulation of cancer cell growth. Researchers are just now figuring out that people who are chronically deficient in vitamin D, which includes most Americans, are at far greater risk of a variety of different cancers. Vitamin D has been shown to be the single most powerful chemical compound known to medical science for preventing hormone-related cancers such as breast cancer and prostate cancer.
Why antioxidants are important before exposing yourself to UV lightNow, you might ask, "What if I can't get sunlight? What if I live in a northern climate or a cloudy climate and I just can't get sunlight?" First, as I said before, you can go visit a tanning salon. This is only the second-best choice. Personally, I don't like artificial light even if it is ultraviolet -- sunlight is far healthier for you because it has a full spectrum of energy that's not found in a tanning bed. But a tanning salon is your best alternative. If you can't get out in the sunlight, go sign up with a tanning salon.If you do that, it is crucial that you supplement with superfoods and high levels of antioxidants. If you don't have high levels of antioxidants in your tissues, you may suffer skin damage from excessive ultraviolet radiation. By taking high levels of antioxidants, however, you will build up an internal sunscreen, and your skin's response to sun exposure will be very different. It will be healthy and adaptive, meaning that you won't burn. Instead, you will tan. This is true even if you've never tanned in your life. I know exactly what I'm talking about here -- I used to be one of the most fair-skinned people around. I would sunburn very easily. I grew up in the Midwest, and after just half an hour in the summer sun I would be burned beet red. My skin would peel, and I would be in pain for days. Now, thanks to the antioxidants I'm taking, I can go out in the desert in Arizona, in the middle of the summer, and spend three hours under the sun with no sunscreen whatsoever and not burn at all. What's the difference? Do I have new skin and new genetics? Of course not. I just have better nutrition. This is one of those truths about health that medical science currently considered heresy, but will eventually acknowledge as true in the years ahead.
Protect your skin with outstanding internal nutritionNutrition makes all the difference when it comes to sun exposure. Keep in mind that it takes a little bit of time for this nutrition to work its way into the tissues of your skin. So if you haven't been engaging in good nutrition but you want sunlight, don't make the mistake of jumping out into the sun right away. Give yourself a couple of weeks following high-density nutritional supplementation first (and use whole food-based supplements, not the cheap chemical multivitamins sold at retail).One of the best products you can get to assist with this is called astaxanthin. Astaxanthin will greatly boost the antioxidant count in your tissues, protect you from sunlight, and function as an internal sunscreen. It will also reduce inflammation and protect your nervous system, including your eyes, from damage from a variety of sources, including oxidative damage, free radical damage, and damage from ultraviolet radiation. Getting astaxanthin into your diet is very wise. You should also add superfood supplements to your diet. If you're not already taking a green foods product, I strongly urge you to order one and make it part of your daily diet. If you don't like the taste of it at first, keep in mind that you will get used to it, and you can start small. Blend half a teaspoonful into your favorite drink. I recommend bananas and either milk or soymilk. That makes a delicious milkshake. You can blend in a little supergreen powder and start increasing your dosage until you're putting in a couple of heaping tablespoonfuls each morning. Believe me, you'll not only get used to the taste, you'll come to like it. You can also buy a variety of other nutritional supplements. There's a product available at health food stores called Berry Green. It's a whole food concentrate. It's important that you don't make the mistake of relying on isolated vitamins; eat whole food concentrates if you want to boost your antioxidant count, which will help protect you from sunburn.
Alternative food sources of vitamin DIf you can't get into a tanning booth, or don't want to, another alternative to sunlight is to find other sources of vitamin D. The best way to do that is to drink cod liver oil on a daily basis. A tablespoonful of cod liver oil would go a long way toward boosting your vitamin D count and protecting you from chronic disease.Don't assume that this tastes unpleasant just because it's from fish. Cod liver oil is actually close to tasteless. It's sort of like drinking olive oil or corn oil. Additionally, you can buy mint- or orange-flavored cod liver oil from health food stores and it won't taste objectionable at all. You can even mix it into your blended morning drink if you want. Either way, get vitamin D into your diet. Don't believe for a second that vitamin-D-fortified milk is going to give you enough vitamin D. Most of the vitamin D in milk has been destroyed by excess exposure to light. It's a terrible way to get vitamin D. The most efficient vitamin D supplement is still fish oil, and cod liver oil is the best way to go. There are four main points you should take from this:
Monday, November 07 2011
“I tend to forget drinking water even when it’s hot, and you expect me to remember to do that when it’s cold?” Odds are that something similar came across your mind when you read the headline. No wonder – we are very good at forgeting that we need to drink water. Even if we are dying of thirst, there is a good chance we won’t even notice it. Everyone tells us that when it’s hot, we should drink plenty of water. And while they’re right, that same rule applies to the times when it’s cold. In winter, our water balance is easy to disrupt, if we don’t know what to do. Although you may have heard that a million times, make it a habit to drink water. It’s for your own good. Even drinking tap water is a great deal better than not drinking any water. Be sure that your health is getting a lot of value for your money. But why do we have to drink water in the winter? What you are maybe forgetting is that our body needs water for many purposes. Cooling down itself is only one of them. You need water to remove toxic waste from your body and to transport minerals in and out of the cells… just to name a few. You need to drink 1 galon of water every day no matter if it’s winter or summer. Your body will need this water to keep itself running. What happens if you don’t drink any water? The body takes that as a sign, that you are living in an enviroment in which there is little water. So it cuts down on its use. This makes you perform worse than normal, but at least you are alive. If you start drinking plenty of water, you will teach your body that there really is enough for it to keep going. After a few days, you will start getting thirsty more and more often. Your body will be working at full speed. So basically, we get enough water to survive from the food we eat. But if we are to feel energetic and good about ourselves, we need to drink water no matter if it’s summer of winter. Friday, October 07 2011
Quick autumn soupFor 4 portions: |