It’s enough to make a tea drinker buy an espresso machine. In a new study scientists in Germany report they were able to modify a common age-related defect in the hearts of mice with doses of caffeine equivalent to four to five cups of coffee a day for a human. The paper—the latest addition to a growing body of research that supports the health benefits of drinking coffee—describes how the molecular action of caffeine appears to enhance the function of heart cells and protect them from damage.
Here's what you should know: Collagen is the protein-rich connective material between tissue and bones (so, yup, veg-heads, you’ll have to sit this one out). It comes in a powder form, so you can stir it into pretty much anything to get a major protein boost that will help you kick-start your day. There’s also some preliminary evidence it can help keep your skin hydrated, improve alcohol-induced liver damage, and support joint health. Look for a brand that doesn't change the flavor, like Further Food Collagen Peptides, so you aren't scrunching up your nose at every sip.
So, you’re running late for work and you manage to guzzle down a cuppa before heading into your first a.m. meeting. Fast forward to mid-day and your stomach is growling and you realize that—whoops!—you completely forgot to eat breakfast and now it’s past lunchtime. Though drinking coffee is healthy, Adina Pearson, RD, says that because coffee can suppress your appetite and is a stimulant, some people use it as a meal replacement. “Coffee’s stimulant properties may mask the fact you’re undereating, but it’s only temporary. Good self-care means eating enough—not just being buzzed. You can’t run on caffeine you need food—carbs, protein, fat, vitamins and minerals, and fiber—for overall health.” Here are 7 signs you’re drinking too much caffeine.
In a 2007 study published in the International Journal of Dermatology, researchers found caffeine could be a potential hair growth stimulant for men with androgenetic alopecia, a common type of hair loss. In fact, the growth of the hair follicles that were treated with caffeine increased 46 percent and the life cycle of the hair was extended by 37 percent. And once you’re hair is luscious and flowing, here’s the Haircut That Will Shave 10 Years Off Your Age. 
Your daily cup of coffee may be doing more for you than providing that early-morning pick-me-up. The health impact of coffee has long been a controversial topic, with advocates touting its antioxidant activity and brain-boosting ability, and detractors detailing downsides such as insomnia, indigestion and an increased heart rate and blood pressure. But the latest wave of scientific evidence brings a wealth of good news for coffee lovers. Here are 10 reasons drinking coffee may be healthier for you than you thought.
Other studies have tried to pinpoint exactly what in caffeine is helping to halt the onset of these diseases. A 2014 study (14) found that caffeine blocks various tau receptors (a protein that contributes to brain cell degeneration). Another study found that caffeinated coffee increased GCSF (15) - a substance greatly decreased in Alzheimer’s patients - levels in the bloodstream.
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