Lavie says his findings suggest that sipping two to three cups per day is pretty safe, and possibly beneficial. But Van Dam notes that if you're generally healthy (and not pregnant or nursing), the totality of the evidence suggests that four cups of Joe per day shouldn't be harmful.
http://www.npr.org/sections/thesalt/2013/08/17/212710767/how-many-cups-of-coffee-per-day-is-too-many
A study published this week in Mayo Clinic Proceedings suggests that when it comes to coffee, too much appears to be more than 28 cups per week, at least if you are under 55.
http://www.npr.org/sections/thesalt/2013/08/17/212710767/how-many-cups-of-coffee-per-day-is-too-many
A 16-ounce cup of brewed decaffeinated coffee typically contains about 12 to 25 mg of caffeine. If you need a caffeine boost but are concerned about your intake, you might choose a latte (about 75 mg of caffeine).
https://www.babycenter.com/404_is-it-safe-to-drink-coffee-during-pregnancy_1246893.bc
A new report suggests that it’s generally safe for the average person to consume 400 milligrams of caffeine each a day. More than 90 percent of the world’s population consumes caffeine in some form on a regular basis. The stimulant drug (yes, it is considered a drug) helps a person stay awake, alert and productive.
http://www.newsweek.com/how-much-coffee-day-it-safe-drink-336438
The researchers found that younger men who passed the 28-cup weekly threshold – which works out to about four cups per day – had a 56 percent increased risk of death from all causes. Younger women who were heavy coffee drinkers had a greater than two-fold increased mortality risk.
http://www.npr.org/sections/thesalt/2013/08/17/212710767/how-many-cups-of-coffee-per-day-is-too-many
Almost 20% of mothers were heavy caffeine consumers during pregnancy (300 mg/d or greater), and while the incidence of frequent night awakening in children tended to increase, the difference was not significant when compared with those consuming less than 300 mg/d (22.5% vs 13.5%, P = .114).
http://www.motherisk.org/prof/updatesDetail.jsp?content_id=998
According to the report, seven of the 13 countries in the European Union evaluated have a high population of people who exceed 400 milligrams of caffeine each day, which is equal to about four 8-ounce cups of coffee.
http://www.newsweek.com/how-much-coffee-day-it-safe-drink-336438
Be aware that the amount of caffeine in your cup of coffee will vary depending on the type of coffee and how it's brewed. The coffee at a restaurant or coffee shop, for example, can range from about 100 mg for a small (8-ounce) cup to over 400 mg for a large (16-ounce) cup, depending on the brand and the brew.
https://www.babycenter.com/404_is-it-safe-to-drink-coffee-during-pregnancy_1246893.bc
A new report suggests that it’s generally safe for the average person to consume 400 milligrams of caffeine each a day. REUTERS/Jorge Silva. Tech & Science Coffee Tea caffeine Health. More than 90 percent of the world’s population consumes caffeine in some form on a regular basis.
http://www.newsweek.com/how-much-coffee-day-it-safe-drink-336438
Is it safe to drink coffee during pregnancy? Yes, but hold the refills. The American College of Obstetricians and Gynecologists recommends limiting your caffeine consumption to fewer than 200 milligrams (mg) per day. That's about what you'd get from drinking one 10-ounce cup of Starbucks coffee.
https://www.babycenter.com/404_is-it-safe-to-drink-coffee-during-pregnancy_1246893.bc
how much coffee is safe per day pregnancy
The safe amount of coffee during pregnancy is 200 milligrams per day. In pregnancy, 200 milligrams of coffee is safe per day.