These conditions include:

• angina (VITYANGINA)

• anxiety or depression (VITYANXDEP)

• arthritis, lupus, or fibromyalgia (VITYARTHLF)

• asthma (VITYASTH)

• back pain or problem (VITYBACPAIN)

• birth defect (VITYBIRTHD)

• bowel problems and constipation (VITYBOWL)

• cancer (VITYCANC)

• cataracts (VITYCATAR)

• chronic bronchitis (VITYCBRON)

• cholesterol (VITYCHOL)

• head or chest cold (VITYCOLD)

• congestive heart failure (VITYCONGHF)

• coronary heart disease (VITYCORON)

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

• benign tumors or cysts (VITYCYST)

• dental pain (VITYDENPAIN)

• diabetes (VITYDIAB)

• diabetic retinopathy (VITYDIABRET)

• emphysema (VITYEMPH)

• excessive sleepiness during the day (VITYESLEEPY)

• allergy to food (VITYFALL)

• fracture, bone or joint injury (VITYFRACT)

• glaucoma (VITYGLAUC)

• gynecologic problem (VITYGYN)

• heart attack (VITYHATT)

• hay fever (VITYHAY)

• hearing problem (VITYHEAR)

• hernia (VITYHERN)

• hypertension (VITYHYPER)

• insomnia (VITYINSOM)

• stomach or intestinal illness (VITYINTEST)

• irregular heartbeat (VITYIRRH)

• jaw pain (VITYJAWPAIN)

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

• weak or failing kidneys (VITYKIDNEY)

• poor circulation in legs (VITYLCIRC)

• liver problem (VITYLIVER)

• macular degeneration (VITYMACD)

• allergy to medication (VITYMALL)

• menopause (VITYMENOP)

• menstrual problems (VITYMENST)

• migraine or severe headache (VITYMIG)

• missing limbs (fingers, toes, digits), amputee (VITYMLIMB)

• multiple sclerosis (VITYMSCLER)

• neck pain or problem (VITYNECPAIN)

• neuropathy (VITYNEUROP)

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

• other developmental problem (VITYODD)

• other heart condition or disease (VITYOHART)

• other injury (VITYOINJ)

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

• other lung or breathing problem (VITYTOLUNG)

• osteoporosis, tendinitis (VITYOSTEO)

• Parkinson's (VITYPARK)

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

• prostate trouble or impotence (VITYPROST)

• recurring pain (VITYRECPAIN)

• mental retardation (VITYRET)

• seizures (VITYSEIZ)

• senility (VITYSENILE)

• sinusitis (VITYSINUS)

• skin problems (VITYSKINA)

• sprain or strain (VITYSPRAIN)

• stroke (VITYSTROKE)

• thyroid problem (VITYTHYR)

• ulcer (VITYULCER)

• urinary problem (VITYURIN)

• varicose veins, hemorrhoids (VITYVEIN)

• vision problem (VITYVISION)

• weight problem (VITYWEIGHT)

• other (VITYOTH1, VITYOTH2, VITYOTH3)

The aforementioned variables indicating which conditions respondents treated via high dose or megavitamin therapy provide a "yes" or "no" response for each condition. Analysts interested in the conditions that megavitamin therapy was used to treat may wish to consult the following variables from 2002, as well:

• Number of conditions treated with vitamins, past 12 months (VITYCONNO)

• Three most bothersome conditions treated with vitamins (VITYCON1, VITYCON2, VITYCON3)

• Degree of help from vitamins (VITYCON1HELP, VITYCON2HELP, VITYCON3HELP)

• Reasons for using vitamins (VITYINTER, VITYMEDCOST, VITYMEDFAIL, VITYHCREC)

In 2007, the NHIS collected information about the use of vitamin supplements (with no dosage level specified) in the past 30 days to treat specific health problems (see VIT1TREAT and VIT2TREAT). As in 2002, dichotomous variables in 2007 indicate whether individuals used vitamins to treat a wide range of specific health problems, but vitamin intake in those 2007 variables refers to supplements at any dosage level in the past month.