Your body gives off important signals about your health every...
Health & Social Care323 views·Updated 31 Aug 2026·3 pagesKey Health Indicators
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Molly.issa@molly.issa
1 / 3
1
of 3
Body Mass Index (BMI)
BMI is basically a quick way to figure out if your weight is healthy for your height. It's calculated using a simple formula that gives you a number in kg/m², and this number tells you which weight category you fall into.
The categories are pretty straightforward: underweight is below 18.5, healthy weight sits between 18.5-24.9, overweight ranges from 25-29.9, obese is 30-39.9, and seriously obese is 40 and above. These ranges help doctors assess your health risks quickly.
When your BMI is too high, you might notice short-term problems like getting out of breath easily or having joint pain. The scary stuff happens long-term though - think heart attacks and type 2 diabetes.
Low BMI brings its own troubles. Short-term, you'll probably feel tired all the time and get sick more often because your immune system isn't getting what it needs. Long-term risks include slow growth (especially important for teens) and fertility problems later in life.
Quick Tip: BMI isn't perfect - it doesn't account for muscle mass, so very athletic people might show as "overweight" even when they're perfectly healthy!
2
of 3
Blood Pressure
Think of blood pressure as measuring how hard your blood pushes against your artery walls as it travels around your body. It's written as two numbers , and these readings tell doctors a lot about your heart health.
The ranges are worth memorising: ideal blood pressure is 120/80 to 90/60, pre-high is 120/80 to 140/90, high blood pressure is 140/90 or above, and low is 90/60 or lower. Your doctor will always check this because it's such a reliable indicator of future health problems.
High blood pressure is nicknamed the "silent killer" because you often don't feel symptoms until it's too late. Long-term, it seriously increases your risk of heart disease, stroke, and kidney disease - all life-threatening conditions.
Low blood pressure might sound better, but it can make you feel dizzy and weak. It's sometimes linked to diabetes or can be a side effect of certain medications.
Reality Check: High blood pressure often runs in families, but your lifestyle choices (diet, exercise, stress management) can make a huge difference in preventing it!
3
of 3
Resting Heart Rate
Your resting heart rate is simply how many times your heart beats per minute when you're completely relaxed. Most adults have a rate between 60-100 beats per minute, and anything significantly outside this range could signal health issues.
Athletes often have lower resting heart rates (sometimes in the 40s or 50s) because their hearts are super efficient. However, if your rate is unusually high or low without being fit, it's worth investigating.
Short-term symptoms of abnormal heart rates include dizziness, chest pain, and feeling lightheaded. These symptoms are your body's way of telling you something isn't quite right with your cardiovascular system.
The long-term risks are serious business: heart attacks, strokes, and chronic high blood pressure can all stem from consistently abnormal heart rates. The good news is that regular exercise can help regulate your heart rate naturally.
Pro Tip: Check your resting heart rate first thing in the morning before getting out of bed - this gives you the most accurate reading since you're completely relaxed!
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Health & Social Care323 views·Updated 31 Aug 2026·3 pagesKey Health Indicators
M
Molly.issa@molly.issa
Your body gives off important signals about your health every day, and doctors use specific measurements called health indicators to check how well you're doing. Understanding BMI, blood pressure, and heart rate can help you spot potential health issues early...
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of 3
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Body Mass Index (BMI)
BMI is basically a quick way to figure out if your weight is healthy for your height. It's calculated using a simple formula that gives you a number in kg/m², and this number tells you which weight category you fall into.
The categories are pretty straightforward: underweight is below 18.5, healthy weight sits between 18.5-24.9, overweight ranges from 25-29.9, obese is 30-39.9, and seriously obese is 40 and above. These ranges help doctors assess your health risks quickly.
When your BMI is too high, you might notice short-term problems like getting out of breath easily or having joint pain. The scary stuff happens long-term though - think heart attacks and type 2 diabetes.
Low BMI brings its own troubles. Short-term, you'll probably feel tired all the time and get sick more often because your immune system isn't getting what it needs. Long-term risks include slow growth (especially important for teens) and fertility problems later in life.
Quick Tip: BMI isn't perfect - it doesn't account for muscle mass, so very athletic people might show as "overweight" even when they're perfectly healthy!
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Blood Pressure
Think of blood pressure as measuring how hard your blood pushes against your artery walls as it travels around your body. It's written as two numbers , and these readings tell doctors a lot about your heart health.
The ranges are worth memorising: ideal blood pressure is 120/80 to 90/60, pre-high is 120/80 to 140/90, high blood pressure is 140/90 or above, and low is 90/60 or lower. Your doctor will always check this because it's such a reliable indicator of future health problems.
High blood pressure is nicknamed the "silent killer" because you often don't feel symptoms until it's too late. Long-term, it seriously increases your risk of heart disease, stroke, and kidney disease - all life-threatening conditions.
Low blood pressure might sound better, but it can make you feel dizzy and weak. It's sometimes linked to diabetes or can be a side effect of certain medications.
Reality Check: High blood pressure often runs in families, but your lifestyle choices (diet, exercise, stress management) can make a huge difference in preventing it!
3
of 3Sign up to see the content. It's free!
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Resting Heart Rate
Your resting heart rate is simply how many times your heart beats per minute when you're completely relaxed. Most adults have a rate between 60-100 beats per minute, and anything significantly outside this range could signal health issues.
Athletes often have lower resting heart rates (sometimes in the 40s or 50s) because their hearts are super efficient. However, if your rate is unusually high or low without being fit, it's worth investigating.
Short-term symptoms of abnormal heart rates include dizziness, chest pain, and feeling lightheaded. These symptoms are your body's way of telling you something isn't quite right with your cardiovascular system.
The long-term risks are serious business: heart attacks, strokes, and chronic high blood pressure can all stem from consistently abnormal heart rates. The good news is that regular exercise can help regulate your heart rate naturally.
Pro Tip: Check your resting heart rate first thing in the morning before getting out of bed - this gives you the most accurate reading since you're completely relaxed!
We thought you’d never ask...
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
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