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Transcript
The DASH Diet in treating Hypertension & Type 2 Diabetes Kathleen T. Morgan Chair, Family & Community Health Sciences Special Thanks to Colorado State Univ and Western Dairy Council Hypertension & Type 2 Diabetes • 72 million people in the US age 20 and older have high blood pressure • 20.8 million – 7 % of the US population have diabetes • 13.3 % of all non-Hispanic blacks aged 20 and older have diabetes • After adjusting for population age differences, Mexican Americans, the largest Hispanic/Latino subgroup, are 1.7 times as likely to have diabetes as non-Hispanic whites. Hypertension & Type 2 Diabetes • The prevalence of hypertension is about twice as high among patients diagnosed with type 2 diabetes as it is among patients without diabetes • The current obesity epidemic contributes to hypertension and type 2 diabetes • Losing as little as 10 pounds can contribute to reducing hypertension and improving glucose sensitivity. Diabetes & HTN & Disparities • African American men develop diabetes and high blood pressure earlier in life than other men and are more likely to suffer serious side-effects from these diseases • Within the African-American community, those with the highest rates of hypertension, are likely to be middle aged or older, less educated, overweight or obese, physically inactive and to have diabetes Diabetes & HTN & Disparities • Remediable factors: – Worse access to high-quality healthcare – Socioeconomic barriers to buying healthy food and necessary medications – Lack of culturally appropriate care Dietary Approaches to High Blood Pressure • DASH Diet – Dietary Approaches to Stop Hypertension – Promotes fruits, vegetables, whole grains and low fat dairy products – Adequate Calcium, Potassium, Magnesium – Low in red meat, sweets and sugar beverages Hypertension Prevalence • 50 million hypertensive US adults • One-third of people are unaware • Less than half of American adults have optimal blood pressure • Increases in prevalence and severity in African Americans Blood Pressure Categories - Adults Systolic (mm Hg) Diastolic (mm Hg) Optimal <120 and <80 Normal <130 and <85 130-139 or 85-90 140-159 or 160-179 or >180 or 90-99 100-109 >110 High-Normal High Stage 1 Stage 2 Stage 3 Untreated Hypertension Target Organ Damage Includes: • Hypertensive heart disease • Cerebrovascular disease • Renal disease • Large vessel disease Public Health Challenge of Hypertension • Prevent BP rise with age • Decrease existing prevalence – Healthy People 2010 goal – 16% • Increase awareness and detection – Has no symptoms, called the “silent killer” • Improve control • Reduce cardiovascular risks • Increase recognition of importance of controlling systolic hypertension National High Blood Pressure Education Program Updated Recommendations to Prevent Hypertension • Maintain normal body weight for adults – BMI 18.5-24.9 kg/m2 • Reduce sodium intake to no more than 100 mmol/day • Regular physical activity – at least 30 minutes most days of the week • Limit alcohol consumption • Maintain adequate potassium intake • Consume a diet rich in fruits, vegetables and low-fat dairy products • Reduce saturated fat and total fat in diet JAMA, Oct 16, 2002 Mineral Intake and Hypertension Calcium • American Heart Association Statement – Increasing calcium intake may preferentially lower blood pressure in salt-sensitive people – Benefits more evident with low initial calcium intakes (300-600 mg/day) Mineral Intake and Hypertension Potassium • Clinical trials and meta-analyses indicate potassium (K) supplementation lowers BP • Adequate K intake, preferably from food sources, should be maintained • Evidence is strong enough to support a health claim on high potassium foods Mineral Intake and Hypertension Magnesium • Evidence suggests an association between lower dietary magnesium intake and high blood pressure • Not enough evidence exists to justify a recommendation of increased Mg intake DASH is Unique • Tested dietary patterns rather than single nutrients • Experimental diets used common foods that can be incorporated into recommendations for the public • Investigators planned the DASH diet to be fully compatible with dietary recommendations for reducing risk of CVD, osteoporosis and cancer DASH Reduces Homocysteine Levels • Effect a result of diet high in vitamin B-rich milk and milk products, fruits and vegetables • Lowering homocysteine with DASH may reduce CVD risk an additional 7%-9% -Appel, et al. Circulation, 102:852, 2000 DASH Diet Pattern based on a 2,000 calorie diet Food Group Grains Vegetables Fruits Low-fat or fat free dairy Meats, poultry, fish Nuts, seeds, dry beans and peas Fats and oils Sweets Servings* 7-8 4-5 4-5 2-3 less than 2 4-5/week 2-3 5/ week DASH: Dietary Recommendations DASH meets multiple dietary recommendations • NIH-NHLBI-ATP III • AHA • USDA/DHHS Dietary Guidelines • NCI and AICR • Surgeon General Recommendations Dietary recommendations includes Therapeutic Lifestyle Changes (TLC) • • • • • • Saturated fat: 7% of total calories Cholesterol: < 200 mg/day Weight reduction Increased physical activity Viscous (soluble) fiber: 10-25 g/day Plant stanols/sterols: 2 g/day Take Time for Some TLC • Choose foods low in saturated fat – Whole grains – Fruits – Vegetables – Fat free or 1% dairy products – Lean meats, fish, skinless poultry – Dried peas/beans Take Time for Some TLC (cont) • Choose foods low in cholesterol – Plant-based foods • Grains • Fruits • Vegetables • Dried beans Easily implemented suggestions: • Make connections between dietary practices and health concerns very concrete, address options for reducing sodium • De-emphasize the “low-income” designation of the audience for whom the program is intended • Encourage participants to attend classes in “teams” to support each other • Emphasize food demonstrations • Encourage participants to visit supermarkets, read labels or conduct an informal survey of friends or family Rutgers Cooperative Extension Programs • Encourage participation in Rutgers Essex County’s Cooperative Extension’s: – Food Stamp Nutrition Education Program (FSNEP) – Expanded Food and Nutrition Education Program (EFNEP) –Thank you –[email protected]