Completing the trine: vive la différence!

First, the obligatory picture of Hannah Spearritt :-)

Women have a harder time losing weight than men. Women retain water more than men for hormonal reasons, but a factor that's overlooked is that, on average, healthy women have higher body-fat percentages than healthy men. This is because women have babies and men don't. Who knew? On the plus side, women produce more DHA than men.

Why should having higher body-fat percentages make a difference to weight loss? See What is the required energy deficit per unit weight loss? The energy deficit required to lose 1lb of body-weight increases with increasing body-fat percentage. It's rarely 3,500kcals per lb.

If you really love mathematics, see The Dynamics of Human Body Weight Change by Carson C. Chow and Kevin D. Hall.

From the above paper:- ΔU = ΔQ - ΔW

where ΔU is the change in stored energy in the body, ΔQ is a change in energy input or intake, and ΔW is a change in energy output or expenditure. This is the Energy Balance Equation. As I said back in Back to black, CIAB, pharmaceutical drug deficiencies & nerds.

Where body weight is concerned, calories count (but don't bother trying to count them).
Where body composition is concerned, partitioning counts.
Where health is concerned, macronutrient ratios, EFAs, minerals, vitamins & lifestyles count.

N.B. Poor health can adversely affect body weight and/or body composition, by increasing appetite and/or by adversely affecting partitioning.

Chow on chow, Parkinson's Law, two ways of doing something, and love.

Another mixed bag of subjects. First, here is Mr Carson C. Chow.

From A Mathematical Challenge to Obesity

According to Mr. Chow, Americans are getting increasingly fat because they're eating increasingly large amounts of "chow", because there's increasingly large amounts of it being produced. That's classic Parkinson's law (consumption expands to absorb the available supply).

According to Armi Legge, over-fat people need to . . . . Eat Less (& Move More).

There are two ways to "Eat Less".

1) Measure everything that goes into your mouth, calculate the calories in it and stick to an average daily calorie limit. Weigh yourself daily and adjust your intake to achieve a certain rate of rolling-averaged weight loss i.e. you consciously create a caloric deficit.

2) Tweak your diet until you find one that you can live with, that results in your belt and/or clothes getting looser i.e. you unconsciously create a caloric deficit. If you can't unconsciously create a caloric deficit, there will have to be some conscious restriction.

1) suits athletes & body-builders, as they are highly-motivated people who have a specific target in mind, whether it be athletic performance or a specific body-fat percentage/muscle mass/appearance.

2) suits the general public, as they aren't generally highly-motivated and won't tolerate hunger pangs.

Unfortunately, "Move More" has to be done consciously. Unconscious "Move More" i.e. Non-Exercise Activity Thermogenesis (NEAT) a.k.a. Spontaneous Physical Activity (SPA) is genetically-determined.

Finally, I read Stretching out. I've been spending too much time on a blog full of fallacies & hate and it's been making me tetchy. I've now disengaged from that blog permanently. Breathe in. Breathe out. That's better!

Continued on Completing the trine: vive la différence!