Mood for Life

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Archive of ‘depression’ category

High glycemic index diet as a risk factor for depression

gi-list

The consumption of sweetened beverages, refined foods, and pastries has been shown to be associated with an increased risk of depression in longitudinal studies.

Gangwisch JE, et al. (Am J Clin Nutr. 2015 Aug;102(2):454-63) found a progressively higher dietary Glycemic Index to be associated with increasing odds of depression; progressively higher consumption of dietary added sugars increased this risk. Higher consumption of fiber, nonjuice fruit, and vegetables was significantly associated with lower odds of depression, and nonwhole/refined grain consumption was associated with increased odds of depression.

Junk Food = Junk Mood

TeenAnger

 

Teen consumption of “junk foods” and other unhealthy dietary choices may be contributing significantly to the burgeoning mental health crisis in that age group.

Significant increases in the prevalence of adolescent emotional distress and behavioral problems have occurred over the past several generations.1 Paralleling this mental health pathology among young people is a reduction in the quality of adolescents’ diets over recent generations with decreasing consumption of raw fruits, high-nutrient vegetables and associated increases in fast food, snacks and sweetened beverages2 with resulting obesity3.

While data are still relatively scarce from randomized, controlled trials to demonstrate the efficacy of healthful eating on psychiatric disorders, there is considerable epidemiologic evidence. Most of that literature is based on studies of adults; however very recently there is emerging evidence to suggest similar correlations with adolescent diets.

Cross sectional studies on the effect of diet quality on adolescents indicate an association between dietary patterns and mental health in adolescence. Poorer emotional states and behavior were seen in adolescents with a typical Western dietary pattern high in red and processed meats, takeaway foods, confectionary and refined foods compared to those who consumed more fresh fruit and vegetables4,5.

The first prospective cohort study on the effect of diet quality on mental health of adolescents was published in 2011, based on over 3000 adolescents ages 11- 18 years old6. Participants with poor diet quality at baseline had more emotional and behavioral problems; these worsened with time passage if a poor diet continued but improved if their diets improved. Those with good baseline diet quality had fewer psychiatric problems but if that diet deteriorated, so did their mental health. A healthy diet was defined as one that included fruit and vegetables as “core food groups” and included both two or more servings of fruit per day and four or more servings of vegetables, as well as general avoidance of junk food such as processed foods including chips, fried foods, chocolate, sweets, and ice cream.

In October 2013, results from a very large prospective cohort study of 20,000 women and their young children indicated early poor nutritional exposures in utero were related to risk for behavioral and emotional problems in their children7. These difficulties were more severe if the child’s dietary pattern after birth was also poor.

The mechanisms behind these effects in children and adolescents are not well described. Beyond the obvious neurologic development in utero, we know that neurologic development continues after birth and extends throughout childhood and adolescence into young adulthood8. It therefore appears logical that a highly nutrient dense diet could result in an advantage in brain development with cognitive, emotional, and behavioral implications.

This could be an effect additional to the now apparent influence diet has on the mental health of adults through inflammation and the immune system, oxidative stress and neurotrophic factors. Focus on psychiatric disorders in childhood and adolescence is particularly important given the fact that three quarters of lifetime psychiatric disorders will first emerge by late adolescence or early adulthood9. There appear to be a multitude of reasons why judicious choice of dietary patterns are particularly important to establish early.

1 Twenge JM, Gentile B, DeWall CN, Lacefield K, et al. (2010) Birth cohort increases in psychopathology among young Americans, 1938–2007: A cross-temporal meta-analysis of the MMPI.Clin Psychol Rev 30: 145–154. 21.
2 Cavadini C, Siega-Riz AM, Popkin BM (2000) US adolescent food intake trends from 1965 to 1996. West J Med 173: 378–383.
3 Ogden CL, Flegal KM, Carroll MD, Johnson CL (2002) Prevalence and trends in overweight among US children and adolescents, 1999–2000. Jama 288: 1728–1732.
4 Oddy WH, Robinson M, Ambrosini GL, de Klerk NH, et al. (2009) The association between dietary patterns and mental health in early adolescence. Prev Med 49: 39–44.
5 Jacka FN, Kremer PJ, Leslie E, Berk M, Patton G, et al. (2010) Associations between diet quality and depressed mood in adolescents: results from the Healthy Neighbourhoods study. Aust N Z J Psychiatry 44: 435–442. 10.
6 Jacka FN, Kremer PJ, Berk M, de Silva-Sanigorski AM, Moodie M, et al. (2011) A prospective study of diet quality and mental health in adolescents. PLoS ONE 6(9)

Announcing upcoming release of The New Ancestral Diet

Forget Paleo.  It’s silly and not based on evolution or science.  The New Ancestral Diet sets the record straight.  Available soon.

From an analysis of the past 85 million years of primate history we have been primarily whole food plant based during the vast majority of that time. Only very recently in our history, too recently for genetic adaptation,  have we as a species resorted to eating energy dense animals first by scavenging organ and marrow and then, after control of fire, cooking allowed the occasional consumption of flesh meat.

This has led to chronic inflammation, autoimmune diseases and the major causes of mortality and morbidity in the western world. This book could change your life – live longer with a high quality of life.

 

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Junk Moods

I prepared this video of the latest in peer-reviewed literature to support what is the best dietary pattern for good moods in adolescents. This is what you need to know to eat well for a healthy body and mind. No subjective unsupported statements here, just the epidemiological facts.