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lmggallagher wrote::lol: Hey Lizzy - right now all I have is attitude - some good and some bad
I do know better on the foods I was using in the first recipe - but the weirdness is I didn't have such bad reactions to them before. I think Nicole has said this too - when you eat the WRONG stuff the flare now is much worse but it lasts less time. then again there are things she was intolerant of that she can now eat. I think I need a very long time to heal before I can get to that later point.
Oddly, eating SAD is not as painful to me as this WOE is because it isn't vegetable centric - the fodmaps are in the veggies and fruits not the meat and dairy. So my health goes down the drain on SAD but the pain is more manageable - especially on dairy with it's built in opiods for the pain I might encounter
Re: Jeff, Question about reducing % of body fat....
Postby JeffN » Sun Aug 10, 2008 7:12 am
Clary wrote:Hi Jeff,
Generally speaking, if a person loses several pounds (say over 10#) on a healthful, nutritious diet (let's use Mary's Mini as an example) and changes nothing else (except the amount or types of food eaten), will the % of body fat go down automatically as the weight goes down? --or is some type of additional aerobic or other exercise needed to reduce % of body fat? or________???
Thanks.
Hi Clary
Well, you ask a simple question but are going to get a complicated answer.
However, before I give you the complicated answer, realize that whenever anyone loses weight, they will usually lose a combination of both fat and muscle. So, the simple answer you will lose fat and more than likely you will also lower your % body fat as your weight goes down on a healthy diet. Proper exercise (type and amount) can help increase the reduction in % body fat and help maintain muscle mass and/or bone density.
Now, the complicated answer. (And a thanks to my fellow traveler on the path of health Antonio Z, who helped find this information.)
One of the biggest determinants of your muscle loss to fat loss ratio (when losing weight) and your muscle gain to fat gain ratio (when gaining weight) is your initial level of body fatness and will be a factor in how your body responds to over eating or under eating. This makes "sense" if you think about it from an evolutionary health perspective.
There have been several studies that have been done to explore this phenomenon and the results of these investigations were compiled into one review article
Body Fat Content Influences the Body Composition Response to Nutrition and Exercise GILBERT B. FORBESa (Ann N Y Acad Sci 2000 May;904:359-65)
In most situations involving a significant change in body weight, both fat-free body mass (FFM) and body fat participate, but the relative contribution of FFM and fat to the total weight change is influenced by the initial body fat content. Overfeeding: In experiments of at least 3-weeks' duration, the weight gain of thin people comprises 60-70% lean tissues, whereas in the obese it is 30-40%. Underfeeding: In humans, there is an inverse curvilinear relationship between initial body fat content and the proportion of weight loss consisting of lean tissue. The same trend holds for animals and birds, including loss during hibernation. Another factor is the magnitude of the energy deficit: as energy intake is reduced, lean tissue makes up an increasing fraction of the total weight loss. Exercise: If individuals lose much weight with exercise, the result is usually some loss of lean tissue as well as fat, and once again the proportion of lean loss to total weight loss is greater in thin people than in those who have larger body fat burdens. Members of twin pairs often differ in weight. In thin individuals, lean accounts for about half of the intrapair weight difference, whereas in the obese it accounts for only one quarter. Body fat content must be taken into account in evaluating body composition changes induced by nutrition and exercise.
From the article, a predicative equation was generated that allows us to calculate the amount of muscle and the amount of fat that we can expect to gain, based on our initial fat weight.
Lean Mass Gain / Weight Gain = 10.4 / (10.4 + initial fat weight (kg) )
In addition, this very same equation is valid when dieting for the prediction of muscle loss and fat loss.
Lean Mass Loss / Weight Loss = 10.4 / (10.4 + initial fat weight (kg) )
%BF . . . . lb LBM loss (%)
30 . . . . . 3.53 (35.3%)
25 . . . . . 3.95 (39.5%)
20 . . . . . 4.50 (45.0%)
15 . . . . . 5.21 (52.1%)
10 . . . . . 6.20 (62.0%)
5 . . . . . 7.66 (76.6%)
If your initial weight is 140 lb, and you lose ten pounds, the amount of lean body mass that you lose increases as your percentage of body fat decreases.
At 15% Body Fat, over half of the weight that you lose is lean body mass (LBM) (~52%).
At 10% Body Fat, 62% of the weight that you lose is LBM.
While these equations are not perfect, they are helpful. In addition, these equations were mostly generated using diet alone. The addition of exercise will change things. My own experiences in gaining/losing weight have come close to these predictive numbers.
For those of you who enjoy all these numbers, enjoy!
For those who don't, the bottom line is the best way to lose weight is to do it slowly(!!!), and through the combination of a healthy diet and a moderate amount of exercise.
In Health
Jeff
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