Better Absorption of Nutrients. Diet is key to health in general, and each person is unique and requires unique nutrients for optimal functionality. Tannins (complex chemical substances derived from phenolic acids) found in caffeine may possibly inhibit some of the absorption of calcium, iron, and B vitamins from the diet you are eating. This may be a bigger possibility for those who have a very high caffeine intake daily, an imbalanced diet, or older age.
A Healthier Digestion. Coffee may create a laxative effect on some individuals, stimulating bowel movements, and consuming large amounts may lead to loose stools or even diarrhea. From a population based study, researchers have found that caffeinated beverages may play a role in gastroesophageal reflux disease (GERD).
Lower Blood Pressure + Less Anxiety. Caffeine has been shown to increase blood pressure levels due to the stimulatory effect it has on your central nervous system. The energy that comes with caffeine often stimulates our fight or flight hormones and may cause anxiety, nervousness, heart palpitations, etc.
Getting Better Sleep. Drinking caffeine may affect your sleeping cycle, causing restless sleep, which then leads to daytime drowsiness (this can be especially true if you consume caffeine less than six hours before you go to sleep). Those who are not consuming caffeine may find it easier and takes them less time to fall asleep.