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What is blood pressure?
Heart pumps blood to supply nutrients and oxygen for energy requirements. For effective circulation there need certain amount of blood pressure considered as normal blood pressure. Blood pressure is indicated by two numbers diastolic over systolic in mmHg. Systolic blood pressure is the maximum pressure when heart contracts and diastolic blood pressure is the minimum pressure when heart dilates.
If the blood pressure drops below certain range causes low blood pressure annoying symptoms such as dizziness, fatigue, blurred vision and fainting.
Low blood pressure levels
Blood pressure is considered low when the systolic blood pressure is lower than 90 mmHg or diastolic blood pressure is lower than 60 mmHg. Even when one blood pressure value is lower than these then it is considered as or hypotension.
The most susceptible demographic group can be women who are on the leaner side, in other words hypotension or low blood pressure affects mostly slender women than other fat groups of individuals and additionally hereditary can also play a role. The physiological reasons behind the lowering of the blood pressure is caused by lax blood vessel walls which are not respond effectively to nervous stimulation leading to a slackening of the nervous muscular walls. Some times a long term of illness may impair the adrenal glands. If adrenal glands are affected, they may not produce enough stress hormones and in such cases hypotension in the individual is a result.