Lower blood pressure Not partaking in caffeine can be good for your blood pressure. Caffeine has been shown to raise blood pressure levels due to the stimulatory effect it has on the nervous system. High intake of caffeine — 3 to 5 cups per day — has also been associated with increased risk of cardiovascular disease.Click to see full answer. Keeping this in view, do we need caffeine?There is no nutritional need for caffeine. Caffeine stimulates, or excites, the brain and nervous system. It will not reduce the effects of alcohol, although many people still erroneously believe a cup of coffee will help a person “sober-up.” Caffeine may be used for the short-term relief of fatigue or drowsiness. what happens to your body when you quit caffeine? Withdrawal Symptoms If caffeine is a big part of your daily diet, taking it away can have a host of unpleasant effects in the short term. These include headache, tiredness, sleepiness, down moods, trouble concentrating, and crankiness. You’ll start to feel symptoms a day or two after you stop. One may also ask, is having no caffeine good for you? Caffeine can raise your blood pressure a few points and even more in some people. Quitting coffee or caffeine can lower your blood pressure and keep your heart from working as hard.What caffeine does to your body?Caffeine acts as a central nervous system stimulant. When it reaches your brain, the most noticeable effect is alertness. You’ll feel more awake and less tired, so it’s a common ingredient in medications to treat or manage drowsiness, headaches, and migraines.