Wellness advice is written for an average person who doesn’t exist

Key takeaways

• Official nutrient targets already shift with age: adults 71 and older need 800 IU of vitamin D a day instead of 600, and women 51 to 70 need 1,200 mg of calcium while men that age need 1,000 mg¹².
• Federal activity guidelines ask older adults to add balance training, and they tell people with chronic conditions or disabilities to stay as active as their abilities allow rather than skip activity³.
• In 2023, about 3 in 4 U.S. adults reported at least one of 12 chronic conditions, and the share reached 93% among adults 65 and older⁴.
• In a 2014 Cochrane review of 33 trials in ethnic minority groups, diabetes education tailored to people’s culture lowered blood sugar more than standard education, though the edge shrank over time⁵.
• Short bursts of activity now count: the 2018 guidelines dropped the old rule that only 10-minute bouts mattered, which helps when time is tight⁶.

In 1950, the U.S. Air Force measured 4,063 of its flying personnel from head to toe⁷. Two years later, an Air Force lieutenant named Gilbert Daniels asked the data a simple question: how many of these men were average?⁷

He counted a man as average on a measurement if he fell in roughly the middle 30% of the group. About a quarter of the men were average in height⁷. Only 143 were average on height, chest size and sleeve length together⁷.

Daniels checked ten body measurements in all. The number of men who were average on every one of them was zero⁷. His report concluded that the “average man” was a misleading basis for design, and that equipment should be planned around the full range of bodies⁷.

Health advice has the same blind spot. Most of it pictures one adult: healthy, mobile, middle-aged, with spare time, a steady income, a car and a supermarket nearby. Few people match that picture on every count.

The good news is that official guidelines know this. Their fine print adjusts for age, illness, disability and pregnancy. This article shows where those adjustments live and how to make general advice fit the life you have.

Five things decide whether advice fits you

• Age, which shifts nutrient needs, fitness and the risk of falls.
• Health status, meaning chronic conditions and the medicines that treat them.
• Ability, including disabilities that affect movement, senses, thinking or daily tasks.
• Preferences, including culture, faith, taste and what you enjoy.
• Resources, such as money, time, transportation and the stores and safe places near you.

None of these makes healthy living impossible. They change the starting point, the route and sometimes the target.

Many natural-health traditions put the individual at the center rather than the protocol. On this point, federal guidance agrees. The 2018 Physical Activity Guidelines for Americans include separate advice for older adults, pregnant and postpartum women, and adults with chronic conditions or disabilities³. The 2025–2030 Dietary Guidelines for Americans, released in January 2026, have sections for each life stage from infancy to older age⁸.

After 50, the same plate can deliver less

The NIH Office of Dietary Supplements (ODS) publishes daily nutrient targets for each age group in its free fact sheets. Several change as you age.

• Vitamin d. Adults through age 70 need 600 IU (15 micrograms) a day. At 71 and older, the target is 800 IU (20 micrograms). Aging skin also makes less vitamin D from sunlight¹.
• Calcium. Adults 19 to 50 need 1,000 mg a day. Women 51 to 70 need 1,200 mg, men that age stay at 1,000 mg, and everyone 71 and older needs 1,200 mg². After menopause, the body absorbs and keeps less calcium².
• Vitamin B12. The daily amount stays the same, but absorption changes. Many older adults lack enough stomach acid to free the B12 in food, so ODS advises people over 50 to get most of theirs from fortified foods or supplements⁹.

The new Dietary Guidelines sum up the squeeze. Some older adults need fewer calories but the same or more of key nutrients, and when food falls short, fortified foods or supplements may be needed under medical supervision⁸. Every bite has to carry more.

Movement advice shifts, too. The activity guidelines ask older adults to do “multicomponent” activity, which mixes balance, aerobic and muscle-strengthening work³. That matters because more than 14 million older adults, about 1 in 4, report a fall each year, according to CDC¹⁰. Programs that combine strength and balance training do the best job of cutting falls and fall injuries, while gentle walking by itself doesn’t seem to reduce fall injuries³.

Effort is personal as well. On a 0-to-10 scale of how hard an activity feels, moderate effort is a 5 or 6³. An older or less fit adult may find that a brisk walk feels vigorous, so the guidelines say to judge effort against your own fitness, start light and build up³.

Most adults have a chronic condition, but that changes the plan, not the goal

In 2023, 76.4% of U.S. adults reported at least one of 12 chronic conditions, and 51.4% reported two or more, according to a 2025 CDC analysis of national survey data⁴. Among adults 65 and older, 93% had at least one⁴. The list is broad: it counts obesity and high cholesterol alongside arthritis, depression, diabetes and heart disease⁴.

The trend is reaching younger people. Among adults 18 to 34, the share with at least one condition rose from 52.5% in 2013 to 59.5% in 2023⁴.

A diagnosis rarely means skipping the healthy habit. Federal health officials list ways activity helps people who already have a condition: less osteoarthritis pain, slower progression of high blood pressure and type 2 diabetes, fewer anxiety and depression symptoms, and better thinking in people with dementia, multiple sclerosis or Parkinson’s disease⁶. For knee and hip osteoarthritis, regular activity improves pain and function and doesn’t speed up joint damage at recommended levels³.

What changes is the how. The activity guidelines say adults with chronic conditions should be under a health care provider’s care and can ask a health professional or physical activity specialist which types and amounts suit them³. The Dietary Guidelines likewise tell people with chronic disease to ask a health care professional whether they need to adapt the advice⁸.

Medicines are part of health status. ODS notes that metformin, a common diabetes drug, might reduce B12 absorption, and so can stomach-acid reducers such as omeprazole⁹. A companion article in this series covers wellness goals that need a clinician’s input first.

About 1 in 4 adults has a disability, and most fitness advice forgets them

CDC estimates that in 2022, about 1 in 4 U.S. adults had at least one type of disability¹¹. The most common were serious trouble concentrating, remembering or making decisions (13.9% of adults) and serious trouble walking or climbing stairs (12.2%)¹¹.

Advice that assumes you can jog, stand at a stove for an hour, read small print or drive to a gym leaves many of these adults out. The data show the gap, though the national figures here are more than a decade old.

CDC analyzed national survey data from 2009 to 2012 for adults ages 18 to 64. Nearly half of those with a disability (47.1%) were physically inactive, versus about a quarter (26.1%) of those without one¹². Among people with disabilities, the inactive group had 50% higher adjusted odds of reporting at least one of four diseases: heart disease, stroke, diabetes or cancer¹².

Clinicians often miss the chance to help. In the 2010 survey, fewer than half (44.3%) of adults with disabilities who had visited a doctor or other professional that year recalled any advice to exercise¹². People who got that advice had higher odds of being active, but a one-time survey can’t show the advice was the reason¹².

The guidelines are clear about direction. If you can meet the standard targets, aim for them; if you can’t, be regularly active within your abilities and avoid inactivity³. Their own example is a child who uses a wheelchair and meets the activity target by wheeling to school, swimming in an adaptive program and riding an adaptive bike³.

Adults can use the same idea. Seated strength work, water exercise, hand cycling or balance practice beside a sturdy counter can all be chosen and adjusted with a physical therapist or trained specialist.

The plan you’ll keep beats the plan that looks best on paper

Food and movement carry meaning. A plan that asks you to give up the dishes your family has cooked for generations, or to exercise in ways that clash with your faith or comfort, is built to fail.

Research supports fitting advice to culture. A 2014 Cochrane review, a careful summary that pools many trials, examined 33 randomized trials with 7,453 people from ethnic minority groups who had type 2 diabetes⁵. Education tailored to participants’ cultural background lowered HbA1c, a blood test that reflects longer-term blood sugar control, more than usual education did⁵.

The gains were 0.4 to 0.5 percentage points at three to six months, backed by high-quality evidence, and smaller at one and two years⁵. None of the trials ran long enough to show whether the education prevents diabetes complications⁵.

The activity guidelines make a similar point in plainer words: be active for whatever reasons are meaningful to you, and know that activity can be fun and social³. Dancing, gardening and walking with friends after services all count. Our articles on how culture shapes health beliefs and on keeping heritage diets alive go deeper.

Money, time and distance are health factors, too

Distance and transportation. USDA’s Economic Research Service (ERS) maps neighborhoods where many residents have low incomes and live far from a large grocery store. ERS measures access four ways, and in 2019, 11% to 27% of Americans lived in these low-income, low-access areas¹³. About 40% of all Americans lived more than a mile from a food store¹³.

Distance isn’t the whole story. At the median, low-income people lived slightly closer to a store than higher-income people, 0.69 mile versus 0.88 mile¹³. In July 2026, ERS added a map that counts stores authorized to accept SNAP food benefits, from corner shops to superstores, and measures driving distance as well as straight-line distance¹⁴.

Money. Eating well on a tight budget takes planning, and our guide to a month of groceries priced by the government walks through it. In their advice for teenagers, the Dietary Guidelines say fortified foods or supplements may be needed, with medical guidance, when nutrient-rich foods are hard to get⁸.

Time. The 2018 activity guidelines dropped the old rule that only bouts of 10 minutes or more counted⁶. A few flights of stairs, a brisk walk to the bus or a set of squats while dinner cooks all add up. As the guidelines put it, “Some physical activity is better than none”³. Walking, they note, needs no special skills or costly gear³.

A five-factor table to make advice fit you

Before you adopt a new habit, answer the second column for yourself, then use the rest as a guide.

Factor	Ask yourself	Adjustments to consider	Bring in a professional when
Age	Am I over 50 or over 70? Pregnant or recently delivered? Has my fitness changed?	Check vitamin D, calcium and B12 targets for your age; add balance and strength work; rate effort on your own 0–10 scale	You’ve fallen or feel unsteady, or you’re considering supplements
Health status	Which conditions and daily medicines do I have? Does the advice mention them?	Keep the habit but change its type or dose, such as water walking for sore joints	The advice doesn’t address your condition, or a medicine may change a nutrient need
Ability	What can I do safely today: stand, balance, see, hear, remember steps?	Seated or water options, large-print plans, phone reminders, exercise near support	You’re choosing a starting program; a physical therapist can tailor it
Preferences	Which foods, movement and settings do I enjoy? What does my culture or faith ask of me?	Rebuild advice around traditional dishes; pick activities you’d do with people you like	A dietitian who knows your cuisine can adapt a meal plan
Resources	What can I spend? How much time do I have? How do I get groceries?	Short activity bouts, free walking routes, budget staples, fortified foods	Cost or transportation blocks food or medicine; ask your clinic about local help

Then ask five quick questions about any new piece of advice:

1. Who was this written for? Does it name my age group, condition or life stage?
2. Does it fit my body today, not the body I had 10 years ago?
3. Can I do some version of it with the money, time and places I have?
4. Will I still want to do it in three months? If not, what version would I keep?
5. Who needs to know? Tell anyone who treats you, especially if you take daily medicines.

What the evidence shows

Claim	Evidence rating	What it rests on
Needs for vitamin D and calcium, and the best sources of B12, change with age	Strong evidence	Federal intake targets by age, as summarized by NIH129
Combined strength and balance programs reduce falls in older adults	Strong evidence	Federal guidelines’ evidence review; walking alone doesn’t appear to cut fall injuries3
Regular activity helps manage osteoarthritis, high blood pressure and type 2 diabetes	Strong evidence	Federal guidelines’ evidence review36
Short bouts of activity count toward health benefits	Strong evidence	2018 guidelines dropped the 10-minute minimum6
Culturally tailored diabetes education lowers blood sugar over three to six months	Strong evidence	33 trials; high-quality evidence at three and six months, with a smaller effect at one and two years5
Culturally tailored diabetes education prevents long-term complications	Not enough evidence	None of the 33 trials ran long enough to measure complications5
A clinician’s activity advice helps adults with disabilities become active	Promising but early	One national survey linked advice to higher activity; it can’t show cause12

Questions readers ask

The bottom line

Advice written for everyone is written for an average person, and as the Air Force learned, almost nobody is average on every count. The guidelines themselves bend for age, illness, disability and pregnancy. The best personal plans also bend for culture, budget, time and place.

Run any new habit through the five-factor table before you start. Keep the goal, adjust the route, and bring in a clinician when your health or abilities make the standard advice a poor fit.

Related reading

• Culture shapes how you explain illness, and better care starts with asking about it
• Heritage diets hold up in research, and you can keep yours alive
• A healthy month of groceries, priced by the government
• Living with a condition that isn’t going away
• What rehabilitation covers, and why so many people skip it

Sources

1. NIH Office of Dietary Supplements. “Vitamin D: Fact Sheet for Consumers.” ODS, updated November 8, 2022. ods.od.nih.gov
2. NIH Office of Dietary Supplements. “Calcium: Fact Sheet for Consumers.” ODS, updated September 14, 2023. ods.od.nih.gov
3. U.S. Department of Health and Human Services. “Physical Activity Guidelines for Americans, 2nd edition.” HHS, 2018. odphp.health.gov
4. Watson KB, Wiltz JL, Nhim K, Kaufmann RB, Thomas CW, Greenlund KJ. “Trends in Multiple Chronic Conditions Among US Adults, By Life Stage, Behavioral Risk Factor Surveillance System, 2013–2023.” Preventing Chronic Disease, 2025;22:240539. cdc.gov
5. Attridge M, Creamer J, Ramsden M, Cannings-John R, Hawthorne K. “Culturally Appropriate Health Education for People in Ethnic Minority Groups With Type 2 Diabetes Mellitus.” Cochrane Database of Systematic Reviews, 2014, CD006424. pubmed.ncbi.nlm.nih.gov
6. Office of Disease Prevention and Health Promotion. “Top 10 Things to Know About the Second Edition of the Physical Activity Guidelines for Americans.” ODPHP, updated November 19, 2025. odphp.health.gov
7. Daniels GS. “The ‘Average Man’?” Technical Note WCRD 53-7, Wright Air Development Center, U.S. Air Force, December 1952. archive.org
8. U.S. Department of Agriculture and U.S. Department of Health and Human Services. “Dietary Guidelines for Americans, 2025–2030.” January 2026. cdn.realfood.gov
9. NIH Office of Dietary Supplements. “Vitamin B12: Fact Sheet for Consumers.” ODS, updated December 15, 2023. ods.od.nih.gov
10. Centers for Disease Control and Prevention. “Older Adult Falls Data.” CDC, updated September 4, 2026. cdc.gov
11. Centers for Disease Control and Prevention. “PLACES: Disability” (measure definitions). CDC, 2024. cdc.gov
12. Carroll DD, Courtney-Long EA, Stevens AC, et al. “Vital Signs: Disability and Physical Activity — United States, 2009–2012.” Morbidity and Mortality Weekly Report, 2014;63(18):407-413. cdc.gov
13. Rhone A, Williams R, Dicken C. “Low-Income and Low-Foodstore-Access Census Tracts, 2015–19” (summary). USDA Economic Research Service, EIB-236, June 2022. primary.ers.usda.gov
14. USDA Economic Research Service. “Food Access Research Atlas.” ERS, updated October 15, 2026. ers.usda.gov
15. Pradhananga N, Hildebrand D, Gabel C, Evans C. “The New Dietary Guidelines for Americans 2025-2030.” Oklahoma State University Extension, FCS-3629, 2026. extension.okstate.edu