Take a tour
invite your friends
- Select Menu -
Invite your friends
Body Fat & Water % : Do they change at the same rate as Weight drops
I had a couple of questions on body fat% and body water composition.
However how easy or difficult is to lose body fat% and gain body water%
1. Is there a correlation between weight loss and bodyfat % drop.
2. Is there a direct correlation between drinking "x" glasses of fluids a day and increasing body water% by "y%".
3. whats a safe rate of losing body fat% and increasing body water % on a weekly or monthly basis. what would be an achievable number ?
Thu. Mar 29, 8:06am
These are good questions! I'd love to know the answers, too.
Thursday, March 29, 2007, 8:21 PM
I don't know about the water percentage, but I can definitely answer you on the body fat question, from experience and research - your body fat will drop as you lose weight, but if you are not eating enough protein (many people don't realize that on low-fat diets, they're eating mostly carbs) and not doing any kind of working out, or very little, OR way too much, and not consuming enough calories for your workouts, you will actually slow down the process of losing body fat. It needs to be a nice even balance of diet and exercise in order to build muscle and lose body fat. There are a lot of skinny people who have higher body fat percentanges than heavier people.
Thursday, March 29, 2007, 8:28 PM
LONG POST answer to question
1. There are two kinds of weight loss:
a. water loss (dehydration) - this has no effect on %body fat but will decrease the %water. If you eat salty foods, the very rapid weight gain that you notice will usually be water weight. You can lose it rapidly by decreasing your salt intake. There is also some water associated with the glycogen stores in your liver, and when you start on a diet, the body uses this source of energy before going for the fat stores, and there is a rapid drop in weight from this loss of water early in a diet that won't affect your % body fat. If you sweat a lot, you will also decrease the % of water in your body and this can become dangerous leading to low blood volume and over heating (you need to sweat to give off heat efficiently, but if your body thinks your blood volume is decreased, it tells your kidneys to concentrate the urine and your sweat glands to stop sweating so that you can push enough blood flow to your heart and brain and other tissues).
b. decreased caloric intake compared to your caloric output. This is the only way to lose body fat, but you can also lose body protein. If you increase your exercise, this tells the body to build muscle and go for the fat stores instead. But you need to have adequate protein intake, or else the body will break down protein from other parts of the body to build the muscle. If you don't exercise with dieting, you will probably lose both protein and fat. If you exercise and diet, you can tilt the scales to decreasing %body fat. You can't really control which fat in your body will be lost first. It is pretty much lost evenly throughout the body. You would hope that if you have especially fat hips or belly that more would be lost from where the most is, but alas, this is not to be...
2. Your body likes to be in water balance. If you drink more water than your body needs, your kidneys will excrete the excess water, keeping the % water at an ideal level. As I mentioned before, though, the body has a preference for conserving salt (it's thought that evolutionarily speaking, salt has sometimes been hard to obtain), so if you increase your salt intake, the body will keep it. However, since the body likes to have an ideal concentration of water in it, if there is more sodium, then the body will retain water (by peeing less...) so that the concentration of the sodium in the blood stays the same. But you will have a larger % water in your body. And you will have more volume in your blood vessels. And your blood pressure may be higher. That's why people who have hypertension are told to limit their salt intake, so they won't retain water.
a. water: Your body controls the %water, so as long as you drink enough, you shouldn't really (actually, can't really) change that percent by changing the amount you drink. It is important that you get enough water so that you prevent dehydration. Generally, if you drink enough to keep your urine light yellow or clear, you should be taking in enough. water. You should increase your water intake in situations where you are going to sweat alot. Alcohol is a diuretic and causes the kidneys to over ride the other signals it gets from the body, so if you are drinking a lot of beer or something, you may think that you are OK because your urine is clear, but you can get dehydrated in a hurry.
You may be thinking that %water is correlated with %body fat. It is true that fat tissue has less water in it than lean tissue. Here's a quote from an article I found that gives the percentages and how they change with body composition:
Date: Mon May 15 09:10:18 2000
Posted By: Jeffrey Utz, M.D., Neuroscience, pediatrics, Allegheny University
Area of science: Anatomy
Different people have different percentages of their bodies made up of
water. Babies have the most, being born at about 78%. By one year of age,
that amount drops to about 65%. In adult men, about 60% of their bodies
are water. However, fat tissue does not have as much water as lean tissue.
In adult women, fat makes up more of the body than men, so they have about
55% of their bodies made of water. Fat men also have less water (as a
percentage) than thin men.
So you can see three possible reasons for the discrepancies you have found:
1) Babies and kids have more water (as a percantage) than adults.
2) Women have less water than men (as a percentage).
3) Fat people have less water than thin people (as a percentage).***
b. rate of fat loss: Most experts recommend not to go under 1000 - 1200 cal per day of intake. If you take in too small amount of calories, your body thinks you are starving and will decrease your metabolism.That will be self defeating because then it will take fewer calories to maintain your weight. However, you can increase your caloric output (ie, exercise) to as high as you can, if you want to lose weight faster.
I am a PhD physiologist, not an M.D. This is not medical advice, but just general information. Hope I didn't misunderstand your questions, and sorry if I rambled too much.
Thursday, March 29, 2007, 9:42 PM
I appreciate all the info you've provided. Question on the salt thing though --- I eat a LOT of salt, and I have pretty low blood pressure. I joked with a heart doctor recently that I had to eat a lot of salt to keep my blood pressure up. He said, "that might be true." Do you know what would cause that, physiologically speaking?
Friday, March 30, 2007, 3:05 AM
That could be very true. About 30% of people are sensitive to salt, meaning that salt intake can lead to hypertension. I think they are finding that the centers in the brain or the receptors in the kidney are especially tuned to retain the salt and therefore the water. Other people are less sensitive, and so need a normal or even high salt intake to maintain a normal fluid volume. Your kidneys probably don't reabsorb as much salt as someone with more active salt pumps. It is likely to be a normal thing for you and within normal variability for people.
Friday, March 30, 2007, 7:21 AM
Just wanted to voice appreciation to the 09:42 poster. Cut, pasted, saved!
Friday, March 30, 2007, 8:03 AM
Yes, thanks so much, 9:42, for your great help & useful info!
Friday, March 30, 2007, 12:29 PM
new year calendar
real printable calendar
calendar printable 2017
blank calendar 2017
2017 free calendar
all calendar 2017
useful calendar 2017
schedule 2017 calendar
2017 schedule calendar
schedule calendar 2017
blank calendar 2017-18
map of usa
map of usa
database sql books
database sql pdf
database sql and nosql
what is data analytics
big data in security
big data articles
hadoop software download
database sql tutorials
data analytics books
big data training in gaziabad
big data training in us
big data courses in goa
hadoop and big data
applications of r
how to download big data pdf
how to learn big data and get job
big data jobs and salary packages
salary packages of big data professional
big data professionals
big data professionals jobs
analyze big data
big data search
Thursday, February 02, 2017, 12:05 PM
How To Lose Weight- The Basics
Weight Watchers Points System
The Fat Smash Diet
The Eat To Live Diet
The Beck Diet Solution
How To Get The Motivation To Lose Weight
How To Be Successful Using PEERtrainer
How To Burn Fat
Online Weight Loss Support- How It Works
Does Green Tea Help You Lose Weight?
Tips On Using PEERtrainer
Visit The PEERtrainer Community
Diet and Fitness Resources
Weight Watchers Meetings
Learning To Inspire Others: You Already Are
Writing Down Your Daily Workouts
Spending Money On A Personal Trainer?
How I Became A Marathon Runner
How To Prevent Injuries During Your Workout
Flu Season: Should You Take The Flu Shot?
Are You Really Ready To Start PEERtrainer?
Super Foods That Can Boost Your Energy
Reversing Disease Through Nutrition
New Diet and Fitness Articles:
Weight Watchers Points Plus
How To Adjust Your Body To Exercise
New: Weight Watchers Momentum Program
New: PEERtrainer Blog Archive
Review Of The New Weight Watchers Momentum Program
Weight Loss Motivation by Joshua Wayne:
Why Simple Goal Setting Is Not Enough
How To Delay Short Term Gratification
How To Stay Motivated
How To Exercise With A Busy Schedule
Real World Nutrition and Fitness Questions
Can Weight Lifting Help You Lose Weight?
Are Protein Drinks Safe?
Nutrition As Medicine?
Everyday Weight Loss Tips
How To Eat Healthy At A Party
How To Eat Out And Still Lose Weight
The Three Bite Rule
Tips On How To Stop A Binge
Introducing The PEERtrainer Cheat System
How To Speed Up Weight Loss
How To Get Motivation To Lose Weight
Weight Watchers: The New Science!
3 Myths About Weight Loss With JJ Virgin
Related Article :
New PEERtrainer Articles :
Why Green Tea Helps You Lose Weight
How To Lose A Lot Of Weight, Fast
5 Things You Must Know Before Doing A Cleanse
New: How To Build Muscle
What Is The Best Kind Of Protein Powder?
The Master Cleanse
Will Removing Gluten From Your Diet Help You Lose Weight?
How To Obliterate Your Limitations
How To Get The Motivation To Exercise
How To Stop Feeling Tired
Dr. Joel Fuhrman's Super Immunity Diet
The PEERtrainer Diet
Is Portion Control Keeping You Fat?
The Ultimate Guide To Dietary Fiber
P90X? Do Burst Training Instead
Weight Watchers Points Changes For 2012
Can Diet Soda Cause You To GAIN Weight?