Coffee has long been one of Britain's favourite drinks, with 95 million cups consumed every single day.For many, it is an essential part of the morning routine, relied upon to sharpen focus, boost energy and remedy sleep debt. But scientists increasingly believe the brew is doing far more than helping us wake up. There are benefits that apply to the brain, liver and bones – with studies suggesting that up to five cups per day is the ideal dose. Coffee offers a potent double health boost, combining caffeine which can boost alertness and improve physical performance, with anti-inflammatory polyphenols that scientists believe can lower risk of dementia, heart disease, frailty and premature death. But fascinatingly, experts now believe those benefits may differ, depending on our age. Older adults may see greater heart health improvements - due to the accumulation of blood-boosting compounds over time. Meanwhile women at menopausal age may be more vulnerable to the anxiety-inducing effect. Here, experts reveal the ideal amount of coffee to drink at every stage of life. Studies have linked regular coffee consumption to a lower risk of dementia, heart disease, frailty and premature deathAt least two cups a day in your 30s... even if it's decafYour thirties may feel a little early to be worrying about chronic diseases.But experts increasingly believe this is the decade when many of the conditions that emerge later in life first take root.One study tracking more than 350,000 UK adults aged over 37 found that those who drank five or more cups of coffee a day had a significantly lower risk of liver cancer than non-coffee drinkers. They were also around a third less likely to develop cirrhosis, a serious condition in which the liver becomes permanently scarred and damaged.The benefits were even seen among people who drank decaffeinated coffee.Scientists believe coffee's protective power comes from compounds known as polyphenols, which help reduce inflammation and oxidative stress throughout the body.These powerful antioxidants may also help protect the brain from dementia - decades before symptoms appear.People who drink two to three cups of coffee a day over the course of their working life have a lower risk of dementia and perform better on cognitive tests than those who avoid coffee altogether, research suggests.One study tracking more than 130,000 people over 40 years found those who routinely drank two to three cups of coffee had a 20 per cent lower risk of dementia.Alex Manos, health and performance director at Exhale Coffee, said: 'Polyphenols protect your brain by passing through the blood-brain barrier to reduce neuroinflammation, stimulate the growth of new neurons, and optimise blood flow.'