Whether you’re sipping a hot cappuccino on your way to work or indulging in a sweet latte after a big presentation, it’s hard to imagine a day without coffee. And because it helps you regain energy in no time, many of us can’t resist the temptation to drink several cups to refuel and keep ourselves going throughout the day.

We at Bright Side also can’t stand the thought of facing the day without a hot cup of Java. And we decided to find out how drinking too much coffee may affect you.

1. It might be visible on your nails.

In addition to making you feel jittery, drinking too much coffee might interfere with your iron absorption and cause anemia. This pretty common condition affects the amount of healthy red blood cells that carry oxygen to your body’s tissues and makes you feel weak and tired. Apart from low energy, anemia might affect the appearance of your nails, causing your fingernail moons to become less visible or even disappear.

2. It may upset your stomach.

If you ever felt that drinking too many cups of coffee makes you go to the bathroom more often, there’s actually a scientific explanation to that. Because coffee is acidic, it irritates your stomach lining and causes cramping, which in turn may lead to diarrhea. You might experience these unpleasant consequences even if you drink decaf, so it’s better to watch your caffeine intake and opt for less acidic varieties, such as French roast or espresso.

3. It might give you headaches.

Although many people hope that a hot cup of Java will make an annoying headache go away, it might actually make it worse. Caffeine causes you to urinate more often, which slightly dehydrates your body and may cause headaches. Although about four cups of brewed coffee a day is considered a safe amount of caffeine for healthy people, in reality most of us can tolerate far less, and having too much caffeine can give you painful migraines.

4. It may cause your skin to age faster.

While coffee is rich in antioxidants that protect your skin from harmful free radicals, drinking too much of it can reduce collagen in your cells. Because collagen is vital for achieving a plump and youthful complexion, consuming too much caffeine can cause your skin to become less elastic and more vulnerable to fine lines and wrinkles.

Can you start your day without coffee? How do you feel when you drink too much of it?