Woman's World

Coffee Is One Of Life’s Perks With No Need To Can It Altogether

By Jean Talbert, M.D.
Caffeine is the world’s most popular psychoactive drug. It is a naturally occurring substance found in many leaves, seeds and fruits throughout the world. Historical records show evidence of caffeine consumption in almost every culture dating back hundreds of years.

Four out of five Americans consume at least some caffeine each day, most commonly in the form of coffee, tea, soft drinks, chocolate and energy drinks.  A 6-8 ounce cup of coffee contains approximately 100mg of caffeine while tea and soft drinks contain considerably less (30-45mg). Approximately 20 percent of Americans consume more than 300 mg caffeine per day.

Sensitivity to caffeine’s effects varies and is increased by low bodyweight, increasing age and genetic factors. Cigarette smoking and food usually decrease the stimulant effect. Many people develop a tolerance and can consume larger and larger amounts without experiencing the typical over-caffeinated symptoms of irritability, tremulousness and insomnia. The benefits include increased alertness, improved cognitive function and endurance. Some recent research also suggests caffeine may decrease the risk of type 2 diabetes, Parkinson’s disease and gallstones.

Does caffeine present any serious health risks?  Read on.

Reproduction: A new study suggests an increased risk of miscarriage. Moderate users had a 42 percent increased risk of miscarriage compared to non-users while heavy consumers showed a 142 percent increased risk.

Fortunately, no birth defects have been associated with caffeine.

Although other studies are inconclusive, it seems prudent for pregnant and breastfeeding women and women attempting to conceive to limit their caffeine intake to less than 200 mg/day.

Heart: Caffeine is well known to cause some cardiovascular effects. Transient increases in heart rate and blood pressure are well documented although habitual caffeine users seem to develop a tolerance. Some individuals with known coronary artery disease or arrhythmias may be at a higher risk if they consume large quantities of caffeine.

Breast: An association of caffeine intake with premenstrual breast pain and fibrocystic breast changes has been suggested by a variety of small studies, but there has been no association with breast or ovarian cancer.

Bladder: Caffeine is a mild diuretic and temporarily stimulates an increased production of urine. Minimizing caffeine, tobacco and alcohol can be a big help.

Bones:  The effect on bone strength and osteoporosis is inconclusive. Some effects can be eliminated in moderate consumers with a daily glass of milk. Watch out for cola soft drinks; and even decaffeinated colas, which suggests other substances at work. More study is needed, but women with significant risk factors for osteoporosis may benefit by limiting their caffeine and cola intake.

Menopause: Women who suffer from hot flashes and night sweats often describe an association of symptoms with caffeine and alcohol consumption. Limiting caffeine and alcohol can be a good first step.

Overall, caffeine appears to have limited serious health consequences when consumed in moderation (less than 200 mg per day). Just be aware of caffeine contents of typical foods and beverages.

Cutting down on caffeine consumption can be difficult. Sudden withdrawal can result in headache, irritability, depression and fatigue. But a gradual decrease generally is well tolerated.

Fortunately, for those of us who love our morning coffee, a moderate amount of caffeine does not appear to be detrimental to our overall health.

(Dr. Talbert is a board certified OB/GYN specialist practicing with Cape Obstetrics, Midwifery & Gynecology in Falmouth and Sandwich, 508-457-0088.)