Is it normal for blood pressure to be high in cold weather and low in cold blood in cold weather?

A friend of mine, Lao Fan, is 50 years old. He came to me before the winter of 20 15. He found that his blood pressure was high. He doesn't smoke or drink, and usually doesn't eat much salt, but his blood pressure is 150/ 100.

Ask me what to do?

I said: the lifestyle is quite healthy, so I can only take medicine.

But by the beginning of the next summer, Lao Fan's blood pressure was getting lower and lower, approaching 100/60. What should I do?

I said, it's time to stop taking the medicine.

In the past few years, Lao Fan began to take antihypertensive drugs in winter and stopped taking antihypertensive drugs in summer, which has formed a law; I told him a principle: in any case, blood pressure must reach the standard, close to 120/70.

Lao Fan asked me if I had high blood pressure, and I said yes, but as a person who is very sensitive to seasons, it is more important to monitor blood pressure.

In fact, there are many people like Lao Fan, with high blood pressure in winter and normal blood pressure in summer; There are also some friends with high blood pressure who take more antihypertensive drugs in winter and less antihypertensive drugs in summer.

Why is blood pressure high in winter and low in summer?

Simply put:

In winter, blood vessels contract in cold weather. In order to resist the cold, the body must improve its metabolism level to meet the needs of various organs. Therefore, when it is cold, the adrenal gland secretes adrenaline and norepinephrine, which will raise blood pressure. Acting on the cardiac Bette receptor accelerates the heart rate, enhances the myocardial contractility, and at the same time constricts the systemic circulation arteries, which is the reason for the increase of blood pressure.

In summer, the weather is hot, the heat dissipation of the human body increases, and most of the blood vessels on the body are in a relatively relaxed state. We all know that nitroglycerin and antihypertensive drugs can lower blood pressure because they can relax blood vessels; When summer comes, blood vessels dilate and blood pressure will decrease relatively. Sweating too much at the same time may reduce the blood volume, just like the diuretic antihypertensive drugs we eat, which reduce blood pressure through diuresis. Sweating in summer is equivalent to diuresis, so blood pressure is relatively low.

However, some people are sensitive. After seasonal changes, blood pressure fluctuates greatly, which will lead to high blood pressure in winter and relatively low blood pressure in summer.

How do people with hypertension cope with seasonal changes?

1, when it gets cold or hot, especially in winter or summer, you have to measure your total blood pressure, otherwise you won't know even if your blood pressure fluctuates. Find the problem to solve, don't be kept in the dark by blood pressure.

2, the weather turns cold, blood vessels contract, blood pressure is higher than usual, some sensitive patients need to add some drugs, or replace antihypertensive drugs. When the weather is hot, blood vessels dilate and blood pressure is lower than usual, it is necessary to gradually reduce or stop taking drugs.

But it doesn't mean that you can stop taking drugs if your blood pressure is normal. Only when the blood pressure gradually drops close to 100/60, it is recommended to reduce or stop taking drugs. The principle is to ensure normal blood pressure whether you take medicine or not.

3. If you are uncertain, or fluctuate greatly, much higher or lower than usual, you must go to the hospital or see a doctor online to prevent serious consequences caused by hypertension and hypotension.

In short, the seasons alternate and the temperature changes greatly, so we must manage our blood pressure. You must know your blood pressure first!

Take more blood pressure in different seasons.