Normal values for blood pressure in healthy, middle-aged 50-year-olds with no past history are 90-139 mm Hg systolic and 60-89 mm Hg diastolic; normal values for blood glucose are 3.9-6.1 mmol/L fasting; and normal values for total blood cholesterol are <5.2 mmol/L. Regardless of age, the normal values of blood pressure, blood glucose and blood lipids for adults are defined consistently. The normal values for blood pressure in middle-aged people aged 50 are 90-139 mmHg for systolic (high) pressure and 60-89 mmHg for diastolic (low) pressure. middle-aged people aged 50 should monitor their blood pressure frequently to be alert to the risk of hypertension. If combined with diabetes mellitus and other underlying diseases control target value <130/80mmHg Lipids refer to neutral fats in plasma, and the normal value of total cholesterol and triglycerides for middle-aged people is <5.2mmol/L and <1.7mmol/L respectively. The normal value of blood glucose for a middle-aged 50-year-old is 3.9-6.1 mmol/L for fasting and less than 7.8 mmol/L for 2 hours after a meal. When blood sugar exceeds this range, further screening for possible diabetes or prediabetes is indicated. Hypertension, hyperlipidemia and hyperglycemia are the most dangerous factors leading to cardiovascular and cerebrovascular diseases, so it is important to maintain a healthy lifestyle, such as quitting smoking and limiting alcohol consumption, as well as adhering to physical exercise to prevent the "three highs". If you feel unwell, please consult a doctor immediately. Complete the relevant examinations to clarify the cause of the disease and follow the doctor's instructions to standardize the treatment.