4/4/2011 1 Vitamins & Successful Aging: Promising or Empty Promises? Hope Barkoukis, PhD, RD, LD School of Medicine Case Western Reserve University [email protected]or [email protected]Vitamin “hero” •24% ≥ 65 are obese •22%participate in regular physical activity •54% of leisure time is spent watching TV – (average 6.5 hours daily) Demographics: 20% over age 65 by 2030 CDC Nat’l Center Health Statistics, 2006 Most prevalent chronic diseases: heart disease, hypertension, arthritis NO KNOWN MARKERS TO ASSESS OUR RATE OF AGING MASKING AGE CHANGES (COSMETICALLY), NOT THE SAME AS INTERVENING IN AGING PROCESS!! No accepted therapy to halt or reverse aging Process* • *Caloric restriction June 13, 2005 (Scotland) Fauja Singh • Oldest marathon relay team (5 man) • Combined age = 397 years • Placed 730th of the 912 teams (4hr 16min 24sec) Universal agreement: PA slows aging process 94- World’s oldest marathoner Mobility: ‘superior marker of overall health status’ “Mobility •is a marker of health status •superior to any other measure •one of the main determinants of QOL in old age” •Director of Baltimore Longitudinal Study on Aging- L. Ferrucci Journal of Geriatrics. 63A(12):1416, 2008- Baltimore Longitudinal Study on Aging (BLS) (1958-current)
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4/4/2011
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Vitamins & Successful Aging:Promising or Empty Promises?
•54% of leisure time is spent watching TV – (average 6.5 hours daily)
Demographics:20% over age 65 by 2030
CDC Nat’l CenterHealth Statistics, 2006
Most prevalent chronic diseases: heart disease, hypertension, arthritis
NO KNOWN MARKERS TO ASSESS OUR
RATE OF AGING
MASKING AGE CHANGES(COSMETICALLY),NOT THE SAME ASINTERVENING IN AGING PROCESS!!
No accepted therapy to halt
or reverse agingProcess*
• *Caloric restriction
June 13, 2005 (Scotland) Fauja Singh
• Oldest marathon relay team (5 man)• Combined age = 397 years• Placed 730th of the 912 teams (4hr 16min 24sec)
Universal agreement: PA slows aging
process94- World’s oldestmarathoner
Mobility:‘superior marker of overall health status’
“Mobility •is a marker of health status•superior to any other measure•one of the main determinants of QOL in old age”
•Director of BaltimoreLongitudinal Study on Aging-L. Ferrucci
Journal of Geriatrics. 63A(12):1416, 2008- Baltimore Longitudinal Study on Aging (BLS) (1958-current)
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A bit of background- use of vitamin
supplements in older adult……Sloan, 2009
• No universal descriptor for ‘older adult’
• Nearly all created wealth past decade ≥ 55yo
• Aged 65-74 most frequent age group user of DS and most likely to practice preventive medicine
• Twice as likely, (as any other age group) to take fish oil, omega 3, Vitamins C, E, B12, D
Interruption in sourceInterruption in sourceInterruption in sourceInterruption in sourceRRRReduction in body storageeduction in body storageeduction in body storageeduction in body storage
Impairments in biochemical functioningImpairments in biochemical functioningImpairments in biochemical functioningImpairments in biochemical functioning
Alteration in function/morphologyAlteration in function/morphologyAlteration in function/morphologyAlteration in function/morphology
*Clinical manifestations target every organ*Clinical manifestations target every organ*Clinical manifestations target every organ*Clinical manifestations target every organ
STAGES OF VITAMIN DEFICIENCY:
Determine: too little, too much,Should be adequate?
Observe gradual alteration in levels?Stability of plasma, urine levels, etc
STATUS DETERMINATION: TRENDING…
Any changes in metabolic Pre-Clinical Quantitative analysis functioning? findings of enzyme activity
functional parameters
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WHAT INDICATOR IS BEST FOR THE GIVEN VITAMIN STATUS DETERMINATION?
BASED UPON SPECIFIC INDICATORS
•INDICATORS VARY PER VITAMIN AND LIFE CYCLE•INDICATORS MAY ALSO VARY BASED ON FACTORS SUCH AS
“SMOKER” OR NON SMOKER
CONCEPT OF ADEQUACY •HAS EVOLVED FROM AMOUNT OF
VITAMIN TO MAINTAIN A DEFINED LEVEL OF THAT VITAMINAS NEEDED TO MEET A SPECIFIC CRITERIA↓↓↓↓•INCLUDE CONCEPT OF RISK REDUCTION FROM CHRONIC
DISEASE, AND OPTIMAL BODY POOL/STORES
BESTGoodLimited
Sensitivity of markers to assess status: Sensitivity of markers to assess status: Sensitivity of markers to assess status: Sensitivity of markers to assess status:
A, E, B6, Biotin, Pantothenic Acid, Niacin, C, B1, B2, B12, Folate, K, DA, E, B6, Biotin, Pantothenic Acid, Niacin, C, B1, B2, B12, Folate, K, DA, E, B6, Biotin, Pantothenic Acid, Niacin, C, B1, B2, B12, Folate, K, DA, E, B6, Biotin, Pantothenic Acid, Niacin, C, B1, B2, B12, Folate, K, D
Functional markers to assess status: Functional markers to assess status: Functional markers to assess status: Functional markers to assess status:
B1B1B1B1---- enzyme assay, B2enzyme assay, B2enzyme assay, B2enzyme assay, B2----enzyme assay, B12enzyme assay, B12enzyme assay, B12enzyme assay, B12---- MMA, K MMA, K MMA, K MMA, K
AAAA
Plasma values to assess status: Plasma values to assess status: Plasma values to assess status: Plasma values to assess status:
Supplementation w antioxidants,( C& E), may preclude these health promoting effects of exercisein humans”. Proc Nat’l Acad Sci USA May 26;106(21):8665, 2009
Anti-oxidants do not prevent post-ex peroxidation &may delay muscle recovery. Med Sci Sports Exerc. Sept 41(9):1752, 2009
Mortality in RCT of anti-oxidant supplementation for primary & secondary prevention: systematic review &
meta analysis. JAMA:297(8) 842, 2007
• Random effects meta-analysis & meta regression for co-variates, RCT, using vitamin C, selenium, beta carotene, vitamin E- either alone or in combination
• Vitamins:
– Vitamin C, p=N/S for mortality, but
– Vitamin E (RR= 1.04);
– Vitamin A (RR=1.16); beta carotene (RR=1.07) significantly increased mortality in low bias trials, where total n=180,938
Anti-oxidant vitamins –encourage food sources, too premature to encourage supplemental AO vitamins for older, active adult at this time
Antioxidants: what role do they play in physical activity & health? AJCN 72:637,2000
• RCT- do NOT support this observation– No significant CV risk
reduction
– Supplementation MORE likely to increase all cause mortality in supplemented group
– NO data to support supplemental use of E for CVD
– Stroke-meta-analysis 13 studies, both forms of E, lack of benefit in stroke prevention Bin, Thromb Haemost 105:1,
2011
– Lichtenstein, J Lipid Research 50:S429, 2009
Timing is everything….
• In all animal data, vitamin E protective when E given before histologic evidence of intimal or fatty streak formation
• Observational studies of CV benefit, again no evidence of vascular disease Rimm, 2003; Lancet
361:2017, 2003
• Dotan, 2009, using computer model to review existing data- some sub-populations might benefit, no benefit for those already at risk Dotan, Arterioscler Thromb Vasc Biol 9/1:29(9):1304,2009
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Still promising looking ahead….
• Tocopherol isomers each differ in anti-tumorgenic ability
• Tocopherols: δδδδ and γγγγmore potent than αααα
• Tocotrienols more potent than tocopherols for anti-tumor activity
• αααα tocopherol most potent anti-oxidant, but incapable of inducing apoptosis
• Order of efficacy: delta >>>>gamma >>>>alpha
B vitamins & CV risk: No data support of folic
acid &/or B vitamins for CVD risk reduction Lichtenstein, J Lipid Research 50:S429, 2009
• RCT- effectively lowered homocysteine demonstrated no significant effect on CV events nor all cause mortality
• Animal data, retrospective studies in humans & case studies:
– Hyperhomocysteinemia associated with arterial disease
progression
• Vitamin Intervention –stroke
prevention: cocktail of B6, B12, folic acid- 2 years, p=N/S Toole,
JAMA 291:565, 2004
• Heart Outcomes Prevention
Evaluation 2: folic acid,
B6,B12, 5 years, p=N/S, tx group had increased unstable
angina Lonn, 2006
• Post coronary stent
procedures given IV dose folic acid, B6, B12, 6 months,
higher restenosis Lange, NEJM
2673,2004
Vitamin D & CVDLichtenstein, J Lipid Research 50:S429, 2009
• Evidence for association:
• Higher incidence of CVD during winter months & in higher geographic latitudes of residence
• Low circulating 25 OH D associated with hypertension, Type II DM, metabolic syndrome
• Data from NHANES survey cohort, Health Professionals study,Framingham Offspring study
• RCT: Women’s Health Initiative-
calcium, vitamin D, placebo.
– CVD secondary outcome
– 7 years, p=N/S for coronary & cerebral risk reduction
Macular Degeneration
• Eye disease that damages the macula
• Macula allows for central vision & ability
to see details
• AMD gradually destroys this ability
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NEI’s Age-Related Eye Disease Study (AREDS) ARCH. OPHTHALMOL. 119:1417,2001
• 3,640 subjects with all stages of AMD
• 55-80 years old, average of 69 years
• Random assignment to 4 groups1. Antioxidants
2. Zinc and copper
3. Antioxidants, zinc, and copper
4. Placebo
• Results: Reduced risk of progression to Advanced AMD with the antioxidant, zinc, copper formula
• NO benefit w milder forms of AMD or cataract prevention
AREDS Formulation
Vitamin C 500 mg
Vitamin E 400 IU
Beta carotene 15 mg
Zinc (zinc oxide) 80 mg
Copper (cupric
oxide)
2mg
Current recommendations:
• “Supplement on individual basis”
• “Supplements not recommended for all
patients given recent information on
vitamin E and beta carotene”
• Concern for smokers & those with CVD
• Jager, Age Related Macular Degeneration, NEJM 358:2606, 2008
Immunosenescence:Immunosenescence:collective changes in immune collective changes in immune
function with agingfunction with aging
Antioxidant stores Antioxidant stores
become depleted become depleted
after numerous after numerous insults to the insults to the immune systemimmune system
Wintergerst, 2007
Altered Immune Activity
Increase Macrophage and NK derived Inflammation
Increased ROS Production
Increased T-cell Apoptosis
Micronutrients associated Micronutrients associated with Immune Responsewith Immune Response
Water Soluble VitaminsWater Soluble Vitamins Vitamin B6Vitamin B6
Vitamin CVitamin C
FolateFolate
Vitamin B12Vitamin B12
Fat Soluble VitaminsFat Soluble Vitamins Vitamin AVitamin A
Vitamin DVitamin D
Vitamin EVitamin E
MineralsMinerals SeleniumSelenium
CopperCopper
IronIron
ZincZinc
Wintergerst. 2007
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Elderly immunity: where are we with E?
• Healthy elderly, 4 months, E (all rac-αToco), given at doses 60,200,800 IU
• No adverse effects
• Later, in elderly nursing home residents, E at 200IU, p=.04 for lower respiratory infections
• Meydani, 1998, 2004
• Healthy elderly not duplicated:
• E- 200 mg, or multi-vitamin, 15 months. E
group increased illness duration, more fevers, more
symptoms (p=.03) Graat,
JAMA 288:715,2002
VITAMIN E: FLETCHER, FAIRFIELD, JAMA
287:(23),2002
• No changes in absorption with aging, * plasma increases seen with aging due to age-related changes in lipoprotein metabolism
• DOSES of 800IU+ ?? Risk
• ?? WILL SUPPLEMENTS OPTIMIZE NUTRITIONAL STATUS?
100%DV for 66% of nutrients
Supplement selection:
No evidence of greater stress reduction fromExtra C & Bvitamins
Less iron & vitaminK
No evidence that small doses are beneficial; studiesuse larger amts.
FDA requiresDisclaimer when“structure or Function claimMade”
US Pharmacopeia: 5 quality tests-contains label ingredients;-contains declared amounts;-dissolves easily;-screened for metals,pesticides;
-manufactured in sanitary,controlled conditions. OrNational Formulary (NF) on label Fulfills USP standards,but not FDAapproved, or USP accepted use
Men need 9mg iron or less;May add selenium (200mcg),Vitamin E, lycopene (15mg)
Won’t make one more Energetic!;
Very important: USP onLabel means product met:
SMART VITAMIN/MINERAL SUPPLEMENT SELECTION
• CHECK FOR USP DESIGNATION
• DO NOT EXCEED UPPER LEVEL ESTABLISHED FOR
• VITAMIN D: 100mcg or 4,000 IU : toxic
• VITAMIN A: 3,000 mcg of “preformed”
• B6: 100 mg
• FOLATE: 1,000 mcg
• FORGET THE “GIMMICKS” OF ADDED
ENERGY, OR SPECIAL INGREDIENTS
Optimizing nutritional status:
ALWAYS SELECT FOODS
FIRST! SHOULD NOT BE A
“CRUTCH” FOR POOR FOOD
SELECTIONS!!
AVOID MULTIPLE, SERPARATE
SELECTIONS UNLESS SPECIFICALLY
ADVISED BY YOUR PHYSICIAN
Guidelines:
Vitamin & mineral quantityGuidelines:
Dietary Reference Intakes(DRI) & *Upper Intake
Level (UL), Institute of MedicineFood, Nutrition Board
IOM: 202-334-2352 orwww.iom.edu or www.nap.edu
event
Report adverse event
FDA Medwatch:1-800-332-1088 or
www.fda.gov/medwatch/index.html
Reputable information
National Institute Health:(NIH) Office Dietary
Supplements: www.dietary-supplements.info.nih.gov
US Pharmacopeia:maintainsMonographs & safety informationwww.U.S.P.org