Humör och dieter

Både Dagens Medicin, DN och Netdoktor skriver idag om studien ”Long-term Effects of a Very Low-Carbohydrate Diet and a Low-Fat Diet on Mood and Cognitive Function”. Dagens Medicin skriver att ”Fettätare blev deppigare än andra som åt kolhydrater” och att ”Lite fett i maten gör dig gladare, men inte smalare, än den som väljer bort kolhydrater”.

Själva studien är australiensisk, och jämför 106 överviktiga, uppdelade i två grupper – den ena har ätit en traditionell fettsnål diet (LFHC) och den andra en kolhydratsnål diet (LCHF). Deltagarna fick träffa en dietist och dessutom svara på frågor om hur de mådde, och man undersökte deras minne och koncentrationsförmåga.

Båda grupperna gick ner lika mycket i vikt (13,7 kilo i snitt) och klarade minnes- och koncentrationstesterna lika bra. Däremot skilde sig deras humör – LFHC-gruppens humör var BÄTTRE efter studien, medan LCHF-gruppen var ungefär på samma nivå som innan studien startade.

Studien:

Long-term Effects of a Very Low-Carbohydrate Diet and a Low-Fat Diet on Mood and Cognitive Function

Grant D. Brinkworth, PhD; Jonathan D. Buckley, PhD; Manny Noakes, PhD; Peter M. Clifton, PhD; Carlene J. Wilson, PhD

Arch Intern Med. 2009;169(20):1873-1880.

ABSTRACT



Background Very low-carbohydrate (LC) diets are often used to promote weight loss, but the long-term effects on psychological function remain unknown.

Methods A total of 106 overweight and obese participants (mean [SE] age, 50.0 [0.8] years; mean [SE] body mass index [calculated as weight in kilograms divided by height in meters squared], 33.7 [0.4]) were randomly assigned either to an energy-restricted (approximately 1433-1672 kcal [to convert to kilojoules, multiply by 4.186]), planned isocaloric, very low-carbohydrate, high-fat (LC) diet or to a high-carbohydrate, low-fat (LF) diet for 1 year. Changes in body weight, psychological mood and well-being (Profile of Mood States, Beck Depression Inventory, and Spielberger State Anxiety Inventory scores), and cognitive functioning (working memory and speed of processing) were assessed.

Results By 1 year, the overall mean (SE) weight loss was 13.7 (1.8) kg, with no significant difference between groups (P = .26). Over the course of the study, there were significant time x diet interactions for Spielberger State Anxiety Inventory, Beck Depression Inventory, and Profile of Mood States scores for total mood disturbance, anger-hostility, confusion-bewilderment, and depression-dejection (P < .05) as a result of greater improvements in these psychological mood states for the LF diet compared with the LC diet. Working memory improved by 1 year (P < .001 for time), but speed of processing remained largely unchanged, with no effect of diet composition on either cognitive domain.

Conclusions Over 1 year, there was a favorable effect of an energy-restricted LF diet compared with an isocaloric LC diet on mood state and affect in overweight and obese individuals. Both diets had similar effects on working memory and speed of processing.



Annonser

One Comment to “Humör och dieter”

  1. …och gladast blir de som vinner godis 🙂

    Vinnare på Tre Veckor Raw!

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