Definition of dietary in US English:



  • 1Relating to diets or dieting.

    ‘dietary advice for healthy skin and hair’
    • ‘Claims of the health benefits of foods, food components and a wide array of herbal and other dietary aids abound in the media.’
    • ‘I hope this article will offer insight into the risks, benefits, and indications for use of this dietary therapy.’
    • ‘Diet sheets and supporting written resources facilitated the dietary prescription to patients.’
    • ‘Some patients may benefit from dietary counseling by a dietitian.’
    • ‘Do they have to change their diet, is there a dietary intervention as well to get that sort of weight loss, or do they just continue as before?’
    • ‘My diet must be contributing but no physician has offered any dietary advice.’
    • ‘I took the hint, and had the immense gratification of seeing many similar patients miraculously restored to health by ascorbic acid and dietary advice.’
    • ‘She admitted to the consumption of some grapes, and the dietary advice was repeated.’
    • ‘Healthy dietary habits acquired in infancy could be associated with achievement of higher education.’
    • ‘Efforts to lower cholesterol through dietary manipulations have had only modest effects.’
    • ‘They include acupuncture, dietary therapy, herbal therapy, meditation and energy exercises.’
    • ‘A fasting lipid profile should be obtained four to six weeks after the start of dietary therapy.’
    • ‘It is interesting that it starts with a question ‘Is it too late to give dietary advice to older persons?’’
    • ‘Medical history information and dietary assessments were performed during the study.’
    • ‘However, increased awareness has not consistently lead to healthier dietary practices.’
    • ‘When implementing dietary change, dietitians must take advantage of the motivation for change that follows a cardiac event.’
    • ‘Treatment should include a dietary regimen, physical activity, and behavior therapy.’
    • ‘We assessed diet with the dietary instrument for nutrition education score, and we assessed smoking and exercise with the health practices index.’
    • ‘The possible associations between specific nutrients or dietary patterns in pregnancy and later disease need to be established.’
    • ‘Smoking is the major risk factor for chronic respiratory symptoms, but dietary factors may also play a role.’
    1. 1.1 Provided by one's diet.
      ‘the average dietary calcium intake was 140 milligrams per day’
      • ‘This is the only way the surgeon can determine whether dietary protein intake is adequate.’
      • ‘There were higher maternal lead concentrations among women in the lowest quartile of dietary calcium intake.’
      • ‘Current thinking about the impact of dietary cholesterol is still divided.’
      • ‘The links between dietary salt and cardiovascular disease have puzzled environmental physicians for a long time.’
      • ‘The ADA, however, has not acknowledged the effects of dietary fiber on glycemic control.’
      • ‘You'll learn about dietary fats and cholesterol and how they may have contributed to your heart condition.’
      • ‘Your total cholesterol is the result of dietary cholesterol and the cholesterol the liver produces itself.’
      • ‘In particular, saturated fatty acids and dietary cholesterol should be avoided.’
      • ‘The two study groups were comparable in dietary calcium intake and compliance with study medications.’
      • ‘Other factors complicate the relationship between dietary fat and blood cholesterol concentration.’
      • ‘We used a modified food frequency questionnaire at four years to estimate dietary calcium intake.’
      • ‘Contrary to commonly held belief, dairy products were not associated with relapse nor dietary fibre with its avoidance.’
      • ‘As interest in folate intensifies, the ability to estimate dietary folate intake is becoming increasingly important.’
      • ‘The compounds seemed to hit an unknown target in the small intestine that helped transport dietary cholesterol.’
      • ‘Evidence from epidemiological studies seems to show consistently that intake of dietary fat and meat is positively related to risk of colorectal cancer.’
      • ‘Inadequate dietary calcium increases the risk of low bone-mineral density and stress fractures.’
      • ‘In children, the major causes of anemia are dietary iron deficiency and infection.’
      • ‘Bowel frequency is influenced by several factors including intake of dietary fibre, emotional make up, and psychological morbidity.’
      • ‘Adults and children may learn to adjust their diets so that the amount of dietary lactose is not greater than they can tolerate.’
      • ‘She had a good dietary iron intake and the remainder of her medical history was non-contributory.’


  • A regulated or restricted diet.


Late Middle English (as a noun): from medieval Latin dietarium, from Latin diaeta (see diet).