These variables include:

• attention deficit disorder (VIT2PADD)

• excessive alcohol or tobacco use (VIT2PALCTOB)

• angina (VIT2PANGINA)

• anxiety (VIT2PANX)

• arthritis (VIT2PARTH)

• asthma (VIT2PASTH)

• autism (VIT2PAUT)

• back pain or problem (VIT2PBACPAIN)

• bipolar disorder (VIT2PBIPOL)

• birth defect (VIT2PBIRTHD)

• anemia and blood disorders--adults (VIT2PBLOOD)

• cancer (VIT2PCANC)

• chronic bronchitis (VIT2PCBRON)

• cholesterol (VIT2PCHOL)

• head or chest cold (VIT2PCOLD)

• constipation needing medication (VIT2PCONST)

• coronary heart disease (VIT2PCORON)

• other nerve damage, including carpal tunnel syndrome (VIT2PCTS)

• benign tumors or cysts (VIT2PCYST)

• dementia, including Alzheimer's disease (VIT2PDEMENT)

• dental pain (VIT2PDENPAIN)

• depression (VIT2PDEPRES)

• diabetes (VIT2PDIAB)

• emphysema (VIT2PEMPH)

• excessive sleepiness during the day (VIT2PESLEEPY)

• fibromyalgia (VIT2PFIBRO)

• influenza or pneumonia (VIT2PFLU)

• fracture, bone or joint injury (VIT2PFRACT)

• gout (VIT2PGOUT)

• gum disease (VIT2PGUM)

• gynecologic problem (VIT2PGYN)

• heart attack (VIT2PHATT)

• hay fever (VIT2PHAY)

• hearing problem (VIT2PHEAR)

• hernia (VIT2PHERN)

• hypertension (VIT2PHYPER)

• inflammatory bowel disease (VIT2PINFB)

• insomnia (VIT2PINSOM)

• stomach or intestinal illness (VIT2PINTEST)

• irritable bowel (VIT2PIRRB)

• jaw pain (VIT2PJAWPAIN)

• joint pain or stiffness/other joint condition (VIT2PJNTPAIN)

• weak or failing kidneys (VIT2PKIDNEY)

• poor circulation in legs (VIT2PLCIRC)

• liver problem (VIT2PLIVER)

• lupus (VIT2PLUPUS)

• mania or psychosis (VIT2PMANIA)

• memory loss or loss of other cognitive function (VIT2PMEMLOS)

• menopause (VIT2PMENOP)

• menstrual problems (VIT2PMENST)

• migraine or severe headache (VIT2PMIG)

• missing limbs (fingers, toes or digits), amputee (VIT2PMLIMB)

• neck pain or problem (VIT2PNECPAIN)

• circulation problems (other than in the legs) (VIT2PNLCIRC)

• other allergies--adults (VIT2POALLA)

• other developmental problem (VIT2PODD)

• other heart condition or disease (VIT2POHART)

• other infectious diseases (VIT2POINF)

• other injury (VIT2POINJ)

• knee problems (not arthritis, not joint injury) (VIT2POKNEE)

• other lung or breathing problem (VIT2POLUNG)

• other musculoskeletal problem (VIT2POMUSC)

• osteoporosis, tendinitis (VIT2POSTEO)

• phobias (VIT2PPHOBIA)

• polio (myelitis), paralysis, para/quadriplegia (VIT2PPOLIO)

• prostate trouble or impotence (VIT2PPROST)

• acid reflux (VIT2PREFLUX)

• regular headaches (VIT2PREGHEAD)

• mental retardation (VIT2PRET)

• Rheumatoid arthritis (VIT2PRHEUM)

• schizophrenia (VIT2PSCHIZ)

• seizures (VIT2PSEIZ)

• senility (VIT2PSENILE)

• sinusitis (VIT2PSINUS)

• skin problems--adults (VIT2PSKINA)

• sprain or strain (VIT2PSPRAIN)

• stress (VIT2PSTRESS)

• stroke (VIT2PSTROKE)

• substance abuse, other than alcohol or tobacco (VIT2PSUBST)

• ulcer (VIT2PULCER)

• urinary problem (VIT2PURIN)

• varicose veins, hemorrhoids (VIT2PVEIN)

• vision problem (VIT2PVISION)

• weight problem (VIT2PWEIGHT)

• other (VIT2POTH1, VIT2POTH2, VIT2POTH3)

The aforementioned variables indicating which conditions respondents prevented via a second vitamin supplement provide a "yes" or "no" response for each condition.

For sample adults who took a first vitamin supplement in the past 30 days to prevent a specific condition (VIT1PREV), parallel information was collected on the conditions respondents tried to prevent with that first vitamin supplement. (See, for example, VIT1PADD).

These include:

• Condition for which 2nd vitamin supplement was taken to prevent most (VIT2PCONMOST)

• Condition count for 2nd vitamin supplement used to prevent a condition (VIT2PCONNO)

Researchers may also be interested in the following related variables:

• Took 1st herbal supplement to prevent specific health problem (HER1PREV)

• Took 2nd herbal supplement to prevent specific health problem (HER2PREV)

• Took 1st vitamin supplement to treat specific health problem (VIT1TREAT)

• Took 2nd vitamin supplement to treat specific health problem (VIT2TREAT)

• Took 1st herbal supplement to treat specific health problem (HER1TREAT)

• Took 2nd herbal supplement to treat specific health problem (HER2TREAT)

• Took vitamins or minerals to treat specific health problem, past 12 months (VITYTREAT)

• Took herbal supplements to treat specific health problem, past 12 months (HERYTREAT)