A blood pressure reading of 123/84 mmHg is generally considered within the prehypertension range (elevated blood pressure). The American Heart Association defines normal blood pressure as less than 120/80 mmHg. Readings between 120-129 systolic and less than 80 diastolic are considered elevated. Consulting with a doctor is recommended to manage blood pressure and reduce the risk of heart disease. Reddit discussions can provide anecdotal experiences, but medical advice should always come from a qualified professional.