Calorie Restriction with Optimum Nutrition
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Human Calorie Restriction Survey: Statistical Results

An informal poll of the CR Society mailing list was conducted in 2000 (roughly June - December). 45 persons have so far responded (see the PollDigest for details). Here are the results of the main ("quantitative") questions:

WHAT IS YOUR SEX?  
Barry Sears  Week In The Zone Do Try Calorie Restriction for a Week
Try the LIFE-SAVING and CALORIE RESTRICTED Zone Diet for a week
Number of Responses 45
Total response, % 100 %
Male 82.20 %
Female 17.80 %
SD (n) NA
SD (n-1) NA

HOW OLD ARE YOU? (yrs)  
100 top Zone foods Barry Sears

The Top 100 Zone Foods: The Zone Food Science Ranking System Yes ... CR and the Zone are backed by Science
Number of Responses 45
Mean (total) 41.89 yrs
Mean (male) 42.30 yrs
Mean (female) 40.00 yrs
SD (n) 10.74806902
SD (n-1) 10.86951998

 

ARE YOU MARRIED?    
Number of Responses 44
Percent (total) , yes 59.09 %
Percent (male), yes 59.06 %
Percent (female), yes 57.14 %
SD (n) NA
SD (n-1) NA

 

HOW MANY CHILDREN DO YOU HAVE?    
Number of Responses 19
Mean (total) 2.32
Mean (male) 2.40
Mean (female) 2
SD (n) NA
SD (n-1) NA

 

HOW LONG ON CR? (months)    
Number of Responses 43
Mean (total) 32.34 mos
Mean (male) 34.56 mos
Mean (female) 22.63 mos
SD (n) 47.53037229
SD (n-1) 48.09288148

 

HOW MANY CALORIES DO YOU CONSUME / 24hrs?    
Number of Responses 41
Mean (total) 1762.44 cal
Mean (male) 1829.09 cal
Mean (female) 1487.50 cal
SD (n) 343.8574612
SD (n-1) 348.1291462

 

DO YOU FAST?    
Number of Responses 44
Percent (total), yes 18.18 %
Percent (male), yes 22.22 %
Percent (female), yes 0 %
SD (n) NA
SD (n-1) NA

 

DO YOU EXERCISE?    
Number of Responses 45
Percent (total), yes 97.79 %
Percent (male), yes 97.30 %
Percent (female), yes 100.00 %
SD (n) NA
SD (n-1) NA

 

WHAT IS YOUR HEIGHT (cm)?    
Number of Responses 40
Mean (total) 174.07 cm
Mean (male) 176.17 cm
Mean (female) 164.18 cm
SD (n) 7.774321819
SD (n-1) 7.873361759

 

WHAT IS YOUR WEIGHT (lbs)?    
Number of Responses 40
Mean (total) 141.68 lbs
Mean (male) 144.43 lbs
Mean (female) 128.72 lbs
SD (n) 25.89402246
SD (n-1) 26.22389591

 

WEIGHT BEFORE CR (lbs)?    
Number of Responses 39
Mean (total) 166.80 lbs
Mean (male) 171.44 lbs
Mean (female) 145.57 lbs
SD (n) 28.08691638
SD (n-1) 28.4540812

 

WHAT IS YOUR SET POINT WEIGHT (lbs)?    
Number of Responses 33
Mean (total) 150.00 lbs
Mean (male) 155.19 lbs
Mean (female) 126.67 lbs
SD (n) 19.72859792
SD (n-1) 20.03448589

 

WHAT IS YOUR TARGET WEIGHT (lbs)?  
Number of Responses 26
Mean (total) 131.27 lbs
Mean (male) 134.15 lbs
Mean (female) 119.20 lbs
SD (n) 16.4118287
SD (n-1) 16.73684696

 

HOW LONG UNTIL TARGET (months) ?*  
Number of Responses 21
Mean (total) 29.19 mos
Mean (male) 23.81 mos
Mean (female) 46.40 mos
SD (n) 35.82147407
SD (n-1) 36.70608812
* How long did it take an individual to reach his/her target weight? Or, if they haven't achieved their target weight yet, then how long (cumulative time) before reaching that target?

 

WHAT IS YOUR BODY FAT (%)?    
Number of Responses 26
Mean (total) 10.62 %
Mean (male) 8.96 %
Mean (female) 23.33 %
SD (n) 7.277874389
SD (n-1) 7.422004705

 

DO YOU TAKE SUPPLEMENTS?  
Number of Responses 40
Percent (total), yes 95.00 %
Percent (male), yes 93.75 %
Percent (female), yes 100.00 %
SD (n) NA
SD (n-1) NA

 

DO YOU TAKE HERBAL SUPPLEMENTS?  
Number of Responses 38
Percent (total), yes 60.00 %
Percent (male), yes 61.29 %
Percent (female), yes 57.14 %
SD (n) NA
SD (n-1) NA

 

ANY CAFFEINE IN YOUR DIET?  
Number of Responses 39
Percent (total), yes 87.18 %
Percent (male), yes 84.38 %
Percent (female), yes 100.00 %
SD (n) NA
SD (n-1) NA

 

DID YOU EVER SMOKE?  
Number of Responses 39
Percent (total), yes 23.08 %
Percent (male), yes 25.00 %
Percent (female), yes 14.29 %
SD (n) NA
SD (n-1) NA

 

ANY ALCOHOL IN YOUR DIET?  
Number of Responses 39
Percent (total), yes 58.97 %
Percent (male), yes 62.50 %
Percent (female), yes 42.86 %
SD (n) NA
SD (n-1) NA

 

DID YOU SUFFER FROM ANY AILMENTS BEFORE CR?  
Number of Responses 34
Percent (total) , yes 47.01 %
Percent (male), yes 48.15%
Percent (female), yes 42.86 %
SD (n) NA
SD (n-1) NA

 

DID AILMENTS IMPROVE AFTER CR?  
Number of Responses 16
Percent (total), yes 87.50 %
Percent (male), yes 84.62 %
Percent (female), yes 100.00 %
SD (n) NA
SD (n-1) NA

 

ARE YOU A "VEGAN"?**  
Number of Responses 39
Percent (total), yes 2.56 %
Percent (male), yes 0.00 %
Percent (female), yes 14.29 %
SD (n) NA
SD (n-1) NA
** "Vegan" is a strict vegetarian: no dairy, eggs or fish.

 

HOW MANY HOURS OF SLEEP DO YOU GET / 24HRS?  
Number of Responses 39
Mean (total) 7.37 hrs
Mean (male) 7.34 hrs
Mean (female) 7.50 hrs
SD (n) 0.856483184
SD (n-1) 0.867679518

 

IS YOUR OCCUPATION SCIENTIFIC OR TECHNICAL?  
Number of Responses 34
Percent (total), yes 79.41 %
Percent (male), yes 85.19 %
Percent (female), yes 57.15 %
SD (n) NA
SD (n-1) NA

 

Some qualitative results:

A popular geographic location for responders: California, USA

Most popular diet plan: Walford; Sears a distant second

Where did you hear first about CR? Many said PBS television.

Negative affects on CR: loss of libido, keeping warm, hunger

Magazines, newsletters and web resources: LEF, Nutrition Action, CR Society, Walford.com

Other lifestyle adjustments: buy new clothes, more time w/meals, socializing.

 

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