Your health benchmarked against real clinical data

Below 120/80 mmHg, by the American Heart Association's definition. Elevated runs 120 to 129 systolic with diastolic under 80, stage 1 hypertension is 130 to 139 systolic or 80 to 89 diastolic, and stage 2 is 140/90 or higher. Clinically normal and statistically average have parted company here: the CDC reports that nearly half of US adults, around 120 million people, clear the threshold for high blood pressure, and only about 1 in 4 of them have it under control. A single clinic reading is a poor guide, because the white-coat effect alone can add 10 to 20 mmHg, and cuff fit, posture, recent caffeine and time of day each move the number as well. Home monitoring across several sessions gets closer to the truth. The blood pressure calculator places your reading across the AHA categories, and the resting heart rate calculator covers the companion cardiovascular metric.

A cycle of 21 to 35 days, bleeding for 2 to 7 days, with a typical loss of 30 to 40 ml, is what the American College of Obstetricians and Gynecologists calls normal. Irregularity is far commoner than most people assume: 14 to 25 percent of women have irregular cycles in any given year, and even a healthy cycle wanders by 2 to 5 days from one month to the next. Cycles shorten a little through the late 30s and turn variable in perimenopause. Heavy bleeding, meaning more than 80 ml a cycle or soaking through a pad or tampon every hour, reaches roughly 1 in 5 women and is a medical matter rather than an inconvenience. Painful periods affect 50 to 90 percent of menstruators at some point. The is my period normal tool scores length, flow, pain and regularity against those clinical norms, and the endometriosis symptom checker covers the patterns behind the 7 to 9 year median diagnostic delay.

Through the Rome IV criteria, which ask for recurrent abdominal pain averaging at least one day a week across three months, plus two or more of the following: pain related to defecation, a change in stool frequency, or a change in stool form. The International Foundation for Gastrointestinal Disorders puts 10 to 15 percent of US adults over that line, though only about 30 percent of them ever take it to a doctor, and women are diagnosed at roughly twice the rate of men. IBS is a syndrome of patterns rather than a structural disease, which is why imaging and bloods come back clean while the symptoms are severe. Rectal bleeding, unexplained weight loss, symptoms that wake you at night and onset after age 50 all point away from IBS and towards urgent investigation. The IBS symptom checker walks through the Rome IV matching, and the bloating and bowel frequency tools cover the symptoms that usually travel with it.

The American Heart Association says 60 to 100 beats per minute, and that range is dated and clinically conservative. Aerobically fit adults usually sit between 50 and 70 bpm, and well-trained endurance athletes routinely measure 40 to 50. Resting heart rate is an independent predictor of all-cause mortality: the Copenhagen Male Study tied every additional 10 bpm to a 16 percent rise in the risk of dying from any cause over 16 years of follow-up. When you take the reading matters as much as the reading. Heart rate bottoms out in deep sleep and peaks mid-morning, while caffeine, dehydration, recent food, anxiety and room temperature all push it up. Wrist wearables read optically and tend to overestimate resting heart rate by 2 to 5 bpm against a chest strap or an ECG. The resting heart rate calculator sets your reading against age and fitness benchmarks, and the biological age calculator folds resting HR into a wider physiological estimate.

Persistent fatigue, bone or back pain, muscle weakness or cramping, low mood, hair shedding and slow wound healing. Plenty of cases show nothing at all, which is why a blood test is the only reliable way to know. An analysis of NHANES 2005 to 2006 by Forrest and Stuhldreher put 41.6 percent of US adults at or below 20 ng/mL of serum 25(OH)D, the usual deficiency line. Risk climbs with darker skin pigmentation, latitude above roughly 35 degrees north, limited sun exposure, age over 65, obesity and anything that impairs fat absorption. The IOM recommends 600 to 800 IU a day, while treatment doses for diagnosed deficiency usually run 1,000 to 4,000 IU daily for several months. The vitamin deficiency quiz covers the six commonest deficiencies including D, B12, iron and magnesium, and the fatigue severity quiz helps separate nutritional fatigue from everything else that causes it.

Five markers decide it: waist circumference, blood pressure, fasting glucose, triglycerides and HDL cholesterol, with all five needing to sit in optimal range without medication. Araújo and colleagues, publishing in Metabolic Syndrome and Related Disorders in 2019, found that only 12.2 percent of US adults managed that, which leaves 88 percent metabolically unhealthy by the same definition. Waist circumference is the most useful thing you can measure at home, and above 40 inches (102 cm) for men or 35 inches (88 cm) for women the metabolic risk climbs sharply. Fasting glucose above 100 mg/dL, triglycerides above 150 mg/dL or blood pressure above 130/85 each raise it independently. Insulin resistance often runs years ahead of any visible diagnostic threshold, which is the part worth knowing early. The metabolic health quiz estimates insulin resistance risk from waist circumference and lifestyle inputs, and the visceral fat calculator covers the most metabolically active fat depot there is.

Common, certainly. The CDC's National Health Interview Survey found about 1 in 6 US adults felt very tired or exhausted most days or every day in 2024, with women at 20 percent against 13 percent for men, and fatigue is one of the most reported symptoms in primary care precisely because it rarely traces back to a single cause. Sleep debt is the usual culprit: the average US adult sleeps 6.8 hours a night against the National Sleep Foundation's 7 to 9, so most people carry a chronic deficit they stopped noticing years ago. Iron, vitamin D and B12 deficiency, hypothyroidism, perimenopause, depression and undiagnosed sleep apnea are the medical contributors that turn up most often. Clinically, the Fatigue Severity Scale draws its line at 4 or higher out of 7. Tiredness that survives two weeks of adequate sleep is worth taking to a doctor. The fatigue severity quiz uses the validated FSS-9 scale, the sleep debt calculator quantifies how far behind you are, and the perimenopause quiz covers the fatigue patterns specific to hormonal change.

It depends entirely on what the tool claims to do. Ones built on validated clinical scales, such as the FSS-9, the GAD-7, the Rome IV criteria or the AQ-10 autism screener, come with published sensitivity and specificity values, often above 80 percent for screening purposes. Population-percentile tools, the ones asking where your blood pressure or sleep sits against age and sex peers, are only as good as the dataset underneath them, which is why Find The Norm names the specific study or agency on every page. What none of them can do is stand in for an examination, blood work, imaging or a specialist's judgement. They earn their keep in two situations: telling you that what you are experiencing is statistically ordinary, or telling you it is not, which is then something to take to a clinician. Every health page here carries a medical disclaimer and points towards professional care once symptoms cross the relevant threshold. The health statistics roundup gathers the population figures behind these tools in one place.