X-Message-Number: 17266
Date: Mon, 13 Aug 2001 13:19:47 -0700 (PDT)
From: Doug Skrecky <>
Subject: 43'rd update on fly longevity experiments &food satiation expts
This is the 43'rd update of my fly longevity experiments. Except where
indicated 1/2 tsp citric acid was added to all bottles. I decided to
retest a variety of doses of citric acid, since I was not convinced that
dosage really matter at >1/4 tsp. The present results confirm dosage is
unimportant, and that variations in longevity are due to chance.
I also tested a variety of teas. The most bitter of these was yin hong
tea, and it as well as eucommia appear to be the only ones that were
significantly toxic.
Run #43 Percent Survival on Day
supplement 9 15 21 26 31 36 43 47 52 57 62 68 73 77
____________________________________________________________________
citric acid 1/4 tsp 100 100 96 88 88 79 50 38 38 25 8 0 - -
citric acid 1/2 tsp 100 100 96 88 88 76 32 8 4 0 - - - -
citric acid 1 tsp 96 93 93 93 89 74 63 52 41 22 7 0 - -
blood sugar reducing tea 85 88 85 77 65 58 50 46 27 15 8 4 0 -
chrysanthemum tea 89 86 80 77 69 54 34 23 20 11 6 6 3 0
herbal diuretic tea 91 91 89 83 77 71 57 54 31 14 6 0 - -
eucommia tea 74 74 74 74 70 52 30 17 9 4 0 - - -
yin hong tea 83 76 62 45 34 24 14 10 10 0 - - - -
This is the third update on my food satiation experiments, in which I
compare my ad libitum calorie intake of various foods over a period of
one day.
I tried drinking Lucerne 2% chocolate milk to see how this compared
with Astro's sugar free no fat fruit yogurts. The chocolate milk tasted
good, but the lack of variety placed this in the middle palatability
group. Despite this reduction in liking, I glugged 2100 calories of choco
milk. On a per liter basis the sugar sweetened chocolate milk came with
700 calories, which is 65% higher than the caloric density (424
cals/liter) of the sugar free no fat yogurt. I strongly suspect that this
increased density accounted for the 42% higher calorie intake. It amazes
me how many calories sugar can add to foods. For example I found that
sweetened apple sauce contains double the calories of unsweetened apple
sauce.
I next tried Astro's 1% fat sugar sweetened yogurt. I found this to be
less sweet than the no fat yogurt, and also it has less fruit, but more
calories (936 cals/liter). Again despite the lower palatability I ate 2354
calories of this yogurt! Sugar calories are evidentally quite dangerous to
my waistline. Caloric density of liquid palatable foods has a dramatic
effect on my ad libitum intake. This is in marked contrast the complete
irrelevance of density to intake of low palatability foods. Indeed I can
not convince myself that any food characteristic has a consistent effect
on intake of low palatability foods. Without the lure of taste, my only
motivation to eat appears to be to ingest the minimum calories my body
needs to survive, which seems to be about 1500 calories/day.
(LOW PALATABILITY)
FOOD DAILY CALORIE INTAKE
___________________________________________
rye bread 1388
apple, Gala 1413
chicken breast 1478
rye crispbread 1564
vegetables/cottage cheese 1768
potato 2179 (skipped lunch next day)
(Medium PALATABILITY)
FOOD DAILY CALORIE INTAKE
___________________________________________
yogurt, fruit, no sugar & Gala apples 1976
2% fat chocolate milk 2100
yogurt, fruit, sugar 2354
peanuts 2689 (malabsorption)
(HIGH PALATABILITY)
FOOD DAILY CALORIE INTAKE
___________________________________________
yogurt, fruit, no sugar 1483
cookies & chili 4055
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