--- title: "Heart Health Basics: Knowing Your Numbers" url: https://www.hererockhill.com/2026/05/17/heart-health-knowing-your-numbers/ date: 2026-05-17T15:07:15+00:00 modified: 2026-05-17T15:07:15+00:00 author: "Felicia Byrd" categories: ["Health"] site: "HERE Rock Hill" attribution: "HERE Rock Hill" --- # Heart Health Basics: Knowing Your Numbers *Source: [HERE Rock Hill](https://www.hererockhill.com/2026/05/17/heart-health-knowing-your-numbers/) — May 17, 2026 by Felicia Byrd* Your heart doesn’t give you a lot of warning before something goes wrong. That’s what makes cardiovascular disease so dangerous — and so preventable. The most powerful tool you have isn’t a medication or a procedure. It’s knowing four specific numbers that tell you, and your doctor, exactly where you stand. Blood pressure. Cholesterol. Blood sugar (A1C). And resting heart rate. Together, they paint a picture of your cardiovascular health that’s far more useful than how you feel on any given day. Here’s what each number means, what the targets are, and what to do if yours are off. ## Blood Pressure: The Silent Signal Blood pressure is measured in two numbers: systolic pressure (the top number, which measures the force when your heart beats) and diastolic pressure (the bottom number, which measures pressure between beats). According to the American Heart Association, the categories are: - **Normal:** Less than 120/80 mm Hg - **Elevated:** 120–129 systolic, less than 80 diastolic - **Stage 1 Hypertension:** 130–139 systolic, or 80–89 diastolic - **Stage 2 Hypertension:** 140 or higher systolic, or 90 or higher diastolic - **Hypertensive crisis:** Higher than 180/120 — seek emergency care immediately if accompanied by chest pain, shortness of breath, or vision changes High blood pressure is called “the silent killer” because it produces no symptoms in most people — yet it damages the arterial walls, strains the heart, and dramatically raises the risk of stroke and heart attack over time. The CDC estimates that nearly half of American adults have hypertension, and many don’t know it. The only way to know your number is to measure it. Blood pressure can fluctuate significantly based on time of day, stress, recent activity, and even whether you’re nervous at the doctor’s office. The AHA recommends checking it consistently — same time, same arm, seated and rested for five minutes — and ideally tracking multiple readings over time rather than relying on a single measurement. ## Cholesterol: Not All Bad A standard cholesterol panel — also called a lipid panel — measures total cholesterol, LDL (low-density lipoprotein, or “bad” cholesterol), HDL (high-density lipoprotein, or “good” cholesterol), and triglycerides. The CDC notes that optimal total cholesterol is around 150 mg/dL, with levels above 200 mg/dL considered high. LDL ideally sits around 100 mg/dL — high LDL leads to plaque buildup in arteries. HDL should be at least 40 mg/dL for men and 50 mg/dL for women; higher is better here because HDL actively helps clear cholesterol from the bloodstream. Triglycerides should be below 150 mg/dL. Adults aged 20 and older should have their cholesterol checked at least every four to six years, according to the CDC. If you have family history of heart disease, diabetes, or other risk factors, more frequent testing is warranted. A simple fasting blood draw from your primary care provider or a health screening at Piedmont Medical Center is all it takes. ## Blood Sugar and A1C The A1C test measures your average blood sugar over the past two to three months by looking at the percentage of hemoglobin in your blood that has glucose attached to it. According to the CDC: - **Normal:** Below 5.7% - **Prediabetes:** 5.7% to 6.4% - **Diabetes:** 6.5% or above This matters for heart health because high blood sugar — even at the prediabetes level — damages blood vessels and nerves over time, significantly raising cardiovascular risk. The CDC estimates that more than 38 million Americans have diabetes and roughly 96 million have prediabetes — with most of the latter group unaware of their status. An A1C test requires no fasting and is typically part of a routine blood panel. ## Resting Heart Rate Your resting heart rate — the number of times your heart beats per minute when you’re at rest — is a simple but useful fitness indicator. For most adults, a normal resting heart rate is 60 to 100 beats per minute, though well-conditioned adults often fall in the 50s. A lower resting heart rate generally reflects more efficient heart function. You can measure it by counting your pulse for 60 seconds first thing in the morning before getting out of bed. ## What to Do With Your Numbers Knowing your numbers is the first step. Acting on them is the second. The AHA and CDC both point to the same foundational interventions for improving all four metrics: regular moderate aerobic activity (that 150-minute-per-week target), a diet low in saturated fat, sodium, and added sugars, weight management, not smoking, and limiting alcohol. If your numbers are already in an elevated or high range, medication may be appropriate — but lifestyle changes are effective and complementary regardless. Make a standing appointment to review your numbers with your provider at least once a year. If you haven’t had a cholesterol panel or A1C check recently, that conversation is overdue.