Soyfoods For Health and Nutrition

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SoyfoodsFor Health and Nutrition

www.vitasoy-usa.com
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Soy Consumption Is Increasing

• Soybeans have been cultivated and processed into
  foods for thousands of years
• Soy-based foods are gaining popularity
• Interest in health promotion and disease
  prevention
• Adoption of plant-based diets
• Concern for the environment

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Consumer Attitudes Toward Soy

• Almost three-quarters (74) consider soy products
  healthy
• Over one quarter (28) eat soy products at least
  once a week
• Almost half (43) are aware of specific health
  benefits of soy

2003-2004 National Report on Consumer Attitudes
About Nutrition, United Soybean Board
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Growing Soyfoods Sales
Soyfoods sales in millions
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The World Of Soyfoods

• Traditional
• Tofu
• Soymilk
• Miso
• Tempeh
• Edamame

Photos courtesy of the United Soybean Board
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The World Of Soyfoods

• Western soy protein products (SPPs)
• Isolated soy protein
• Soy protein concentrate
• Soy flour
• Second generation SPPs
• Burgers
• Soy nuts
• Energy bars

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Macronutrient CompositionOf Soybeans ( Kcal)
Fat 37 CHO 26
Protein 37 Complete protein, providing all 9
essential amino acids
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Isoflavones Phytoestrogens
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Biological Effects Of Isoflavones

• Isoflavones have both estrogen-like and
  antiestrogenic properties
• Isoflavones have nonhormonal properties including
  signal transduction and antioxidant effects

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Support For Whole Soyfoods

• Questions have been raised about the use of
  concentrated soy isoflavones supplements by some
  segments of the population
• Available evidence on soy protein benefits is
  much clearer Existing data strongly support the
  value of increasing soy protein.
• Promoting whole Soyfoods is best!

Food and Drug Administration, 2000 http//www.cfsa
n.fda.gov/dms/fdsoypr.html
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The Role Of Soy In Prevention

• Heart disease
• Cancer
• Osteoporosis
• Menopausal symptoms

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Soy Heart Disease Prevention
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Soy Heart Disease Prevention

• Epidemiological studies suggest that consumption
  of soyfoods is associated with reduced risk of
  cardiovascular disease
• Clinical intervention studies indicate that some
  soy components, especially soy isoflavones-contain
  ing soy protein isolate, reduced serum total
  cholesterol and LCL-cholesterol

Clinical and Experimental Pharmacology and
Physiology 2004 31(2)S14-S19.
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Clinical Findings

• Meta-analysis of the effects of soy protein
  intake on serum lipids
• 34/38 trials found soy lowered cholesterol
• Average of 12.9 decrease in LDL
• Slight increase in HDL
• Anderson et al, NEJM. 333 276, 1995
• .
• New clinical findings
• Soy protein and isoflavones appear to have
  coronary benefits independent of cholesterol
  reduction
• Eur J Clin Nutr 57 940, 2003 Nutr 19280, 2003
  Curr Opin Lipidol 14 3, 2003.

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FDA Soy Claim

• 25 grams of soy protein per day, as part of a
  diet low in saturated fat and cholesterol, may
  reduce risk of heart disease
• 6.25 g soy protein/serving. Must also be
• Low fat (
• Low saturated fat (
• Low cholesterol (

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Soy Cancer Prevention
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Soy Cancer Prevention

• Epidemiological studies suggest that consumption
  of Soyfoods is associated with reduced risk of
  breast and prostate cancers
• Animal studies generally support the conclusion
  that some soy components prevent the development
  and progression of breast and prostate cancers

Clinical and Experimental Pharmacology and
Physiology 2004 31(2)S14-S19.
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Soy And Breast Cancer Risk

• Prepubertal soy isoflavones exposure greatly
  reduces mammary cancer in adult rats
• Epidemiologic data suggest women who consume soy
  as teenagers have a 50 ?risk of developing
  breast cancer as adults

Key Early Soy Consumption
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Soy And Prostate Cancer Risk

• Epidemiologic data suggest frequent consumption
  (? two servings/day) may ? prostate cancer risk
  by as much as 70
• Jacobsen, BK, Knutsen, SF, Fraser, GE . Does
  high soymilk intake reduce prostate cancer
  incidence? The Adventist Health Study (US).
  Cancer Control Dec. 1998 9553-557.
• For several reasons, men concerned about their
  prostate health may consider incorporating soy
  into their diet.
• Emerging evidence on the role of soy in
  reducing cancer risk. Nutrition Reviews 61
  117, 2003.

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Soy Bone Health
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Soy Bone Health

• The estrogen-like effects of isoflavones may
  reduce fracture risk similar to that of estrogen
• Isoflavones may
• Stimulate bone formation
• Inhibit bone resorption

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Soy Prevention of Menopausal Symptoms
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Soy Prevention Of Menopausal Symptoms

• Epidemiological investigations and intervention
  studies suggest that some soy products are
  effective for the relief of menopausal symptoms

Clinical and Experimental Pharmacology and
Physiology 2004 31(2)S14-S19.
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Soy Hot Flashes

• 20 Trials Inconsistent Results
• Possible Explanations
• Small studies may be inadequate to detect benefit
• Differences in isoflavones metabolism among
  subjects may influence efficacy
• New research Indicates that soy is effective
  primarily only in women with frequent hot flashes
  (? 5 flashes/day)

J Med Food 2003 61-11.
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Soy And Health Summary

• Source of complete protein
• Heart Disease Soy ? serum cholesterol, may have
  other possible coronary benefits
• Cancer Possibly protective against breast (early
  intake) and prostate cancer

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Soy And Health Summary

• Osteoporosis Encouraging results suggest soy ?
  bone density in postmenopausal women. Long-term
  studies needed
• Hot flashes Inconsistent results, appears to be
  modestly beneficial in women with frequent hot
  flashes

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Soy Protein Intake Recommendations

• FDA intake for cholesterol ?
• 25 grams soy protein per day
• Cancer, CHD, osteoporosis, hot flashes
• 2 servings/day

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Soy Content Of Foods
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Introducing Soy To Your Patients

• Pour soymilk on cereal and use it in cooking or
  to make "smoothies."
• Cube and stir fry tofu or Tempeh and add to a
  salad.
• Include soy-based beverages, muffins, sausages,
  yogurt, or cream cheese at breakfast.
• Top pizzas with tofu, soy cheese, pepperoni,
  sausages, or "crumbles" (similar to ground beef).
  
• Grill soy hot dogs, burgers, marinated Tempeh,
  and baked tofu. Use soy deli meats, soy nut
  butter (similar to peanut butter), or soy cheese
  to make sandwiches.
• Order soy-based dishes such as spicy bean curd
  and miso soup at Asian restaurants.
• Eat roasted soy nuts or a soy protein bar for a
  snack.

Food and Drug Administration, 2000 http//www.cfsa
n.fda.gov/dms/fdsoypr.html
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Resources

• Vitasoy www.vitasoy-usa.com
• USB www.soybean.org
• SANA www.soyfoods.org
• ASA www.soygrowers.com
• Soyfoods directory www.talksoy.com

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For more information

• Visit www.vitasoy-usa.com for
• Serving suggestions
• Recipes
• More health benefit information