Monday, June 18, 2012

Importance of drinking fluids


Fluids (especially water) play a vital role in our body. They keep us hydrated. Their value increases more in summers when we are beginning to feel the effects of dehydration. Generally, the average person is not 100 percent hydrated. Add exercise and a warm climate, and it spells dehydration in a big way.
How Much Should You Drink?
Follow these guidelines:
Before exercise: Drink one to two cups (eight to 16 ounces)
 of fluid two hours before exercise to make sure you are
 well hydrated. Then drink another one-half to one cup
 immediately before exercise.
During exercise: Drink one-half to one cup every 15 to
 20 minutes during exercise. Although this might seem 
tough at first, once you schedule it into your regular
 training routine, you will quickly adapt to having fluid
 in your stomach. In fact, the fuller your stomach is, 
the faster it will empty.
After exercise: Replace any fluid you have lost. Drink
 two cups of fluid for every pound of body weight you lose during exercise.
In hot, humid weather, you need to drink more than usual. (But do not forget that dehydration also occurs during cold weather exercise--your body temperature rises, and you still lose water through perspiration and respiration.)
What Should You Drink?
Should you just reach for the water bottle when you need to hydrate, or are sports drinks better? The answer to this question depends on how much and how hard you exercise--and how much you like water!
The ideal fluid replacement beverage should encourage fluid consumption and promote fluid absorption. If you exercise less than one hour, water should be fine. If you exercise longer than one hour, the fluid should also supply energy to your working muscles. In this case, drink about two to four cups per hour of fluids with carbohydrate concentrations of from 4 to 8 percent. (Most sports drinks fall in this range.)
What about the sodium in most sports drinks? The average exerciser does not need to replace sodium or other electrolytes during exercise. Even well trained marathoners will reserve enough sodium to complete a competition. After heavy exercise, however, it is best to eat a meal that contains some sodium to replace what you may have lost. Follow your cravings--do not worry about restricting the sodium in your food immediately after running a marathon.
If you are participating in an ultra-endurance event that lasts four hours or more, you should consume a sports drink that contains sodium. Fifty to 120 milligrams consumed during exercise should be sufficient. (Sodium content in sports drinks can range from eight to 116 milligrams. Read the label.)
If you are just an average exerciser, you might think sodium in drinks is just a waste. However, sodium may play a different role for you. Sodium helps your body absorb fluid, and along with sugar, sodium may enhance a drink's taste, which can encourage you to drink more.
Therefore, if you are an avid water drinker, you will benefit little from using a sports drink unless you are exercising for at least one hour. However, if you do not like water, sports drinks that taste good and contain less than 8 percent carbohydrate and some sodium might offer you a performance advantage. At the very least, if they encourage you to drink more, they will have done their job.

Thursday, June 14, 2012

Health risks of obesity



Being overweight or obese isn't a cosmetic problem. It greatly raises the risk in adults for many diseases and conditions.
Overweight and Obesity-Related Health Problems in Adults
Coronary Heart Disease
Coronary heart disease (CHD) is a condition in which a substance called plaque builds up inside the coronary arteries. These arteries supply oxygen-rich blood to your heart. Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood.
Plaque can narrow or block the coronary arteries and reduce blood flow to the heart muscle. This can even cause a heart attack.
As your body mass index (BMI) increases, so does your risk of having CHD and a heart attack. Obesity also can lead to heart failure. This is a serious condition in which your heart can't pump enough blood to meet your body's needs.
High Blood Pressure
Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood. If this pressure rises and stays high over time, it can damage the body in many ways. Your chances of having high blood pressure are greater if you're overweight or obese.
Stroke
Being overweight or obese can lead to a buildup of plaque in your arteries. Eventually, an area of plaque can rupture, causing a blood clot to form at the site. If the clot is close to your brain, it can block the flow of blood and oxygen to your brain and cause a stroke. The risk of having a stroke rises as BMI increases.
Type 2 Diabetes
Diabetes is a disease in which the body's blood glucose, or blood sugar, level is too high. Normally, the body breaks down food into glucose and then carries it to cells throughout the body. The cells use a hormone called insulin to turn the glucose into energy.
In type 2 diabetes, the body's cells don't use insulin properly. At first, the body reacts by making more insulin. Over time, however, the body can't make enough insulin to control its blood sugar level.
Diabetes is a leading cause of early death, CHD, stroke, kidney disease, and blindness. Most people who have type 2 diabetes are overweight.
Abnormal Blood Fats
If you're overweight or obese, you're at increased risk of having abnormal levels of blood fats. These include high levels of triglycerides and LDL ("bad") cholesterol and low levels of HDL ("good") cholesterol.
Abnormal levels of these blood fats are a risk factor for CHD. For more information about triglycerides and LDL and HDL cholesterol, go to the Health Topics High Blood Cholesterol article.
Metabolic Syndrome
Metabolic syndrome is the name for a group of risk factors linked to overweight and obesity. These risk factors increase your risk of CHD and other health problems, such as diabetes and stroke.
You can develop any one of these risk factors by itself, but they tend to occur together. A diagnosis of metabolic syndrome is made if you have at least three of the following risk factors:
  • A large waistline. This also is called abdominal obesity or "having an apple shape." Having extra fat in the waist area is a greater risk factor for CHD than having extra fat in other parts of the body, such as on the hips.
  • A higher than normal triglyceride level (or you're on medicine to treat high triglycerides).
  • A lower than normal HDL cholesterol level (or you're on medicine to treat low HDL cholesterol).
  • Higher than normal blood pressure (or you're on medicine to treat high blood pressure).
  • Higher than normal fasting blood sugar (or you're on medicine to treat diabetes).
Cancer
Being overweight or obese raises the risk of colon, breast, endometrial, and gallbladder cancers.
Osteoarthritis
Osteoarthritis is a common joint problem of the knees, hips, and lower back. The condition occurs if the tissue that protects the joints wears away. Extra weight can put more pressure and wear on joints, causing pain.
Sleep Apnea
Sleep apnea is a common disorder in which you have one or more pauses in breathing or shallow breaths while you sleep.
A person who has sleep apnea may have more fat stored around the neck. This can narrow the airway, making it hard to breathe.
Reproductive Problems
Obesity can cause menstrual irregularity and infertility in women.
Gallstones
Gallstones are hard pieces of stone-like material that form in the gallbladder. They're mostly made of cholesterol. Gallstones can cause abdominal or back pain.
People who are overweight or obese are at increased risk of having gallstones. Also, being overweight may result in an enlarged gallbladder that doesn't work right.
Overweight and Obesity-Related Health Problems in Children and Teens
Overweight and obesity also increase the health risks for children and teens. Also, overweight children are more likely to become overweight or obese as adults, with the same disease risks.
So do regular exercise and have proper diet so that you can lose your excess weight. For more information and help, you may register and contact us at www.sanovide.com
Our team of doctors and dieticians would help you in the best possible way.
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