The top line: abundant scientific research demonstrates the close connection of the mind and body. Positive lifestyle factors including exercise, nutrition, sunlight, and sleep are associated with improved mental well-being and lower incidence of depression and anxiety.
How were key studies on health, wellness, and psychological well-being selected?
Key studies concerning health were selected according to the methodological rigor, type of investigation, and approach taken in understanding the relationship between sleep, diet, exercise, and psychological well-being. Hassmen’s 2000 study was identified as a key study due to his investigation of the ways in which consistent and frequent exercise become necessary for one’s well-being and happiness. Rejeski’s study (2002) was identified as a key study because it had a very specific sample type, obese participants diagnosed with osteoarthritis (OA), deviating from the norm of college students as the sample. Courneya’s study in 2003 was identified as a key study because it examined the positive association that oxygen input, from exercise, has on the quality of life in breast cancer survivors. Smaldone’s study from 2007 was identified as a key study because it examined the importance of sleep and its relationship to anger, depression, concentration, and physical symptoms in children and adolescents. Hakkarainen’s study in 2004 was identified as a key study because it examined the importance of diet for well-being. The researchers studied older men who participated in smoking. They found that fatty foods often cause depression, anxiety, and insomnia.
Monteiro’s study from 2004 was identified as a key study because it discussed how essential a well balanced diet is to quality of life in cancer patients with stage III/IV cancer. Paw’s study from 2002 was identified as a key study because it examined the effects of light exercise and micronutrient supplementation to well-being in older adults. Fuligni’s study in 2006 was identified as a key study because it had a diverse sample size of adolescents and examined the importance of sleep with daily stress. McAuley’s study from 2000 was identified as a key study because it examined two types of exercise in older adults and determined which one was more beneficial to subjective well-being. Fox’s meta-analysis from 1999 was identified as a key study because it compiled several articles on physical activity as well as diet and nutrition. All the articles were examined and then all the conclusions were compared to discover a true answer.