Gout is a form of inflammatory arthritis caused by a buildup of uric acid in the blood, which eventually forms sharp, needle-shaped crystals inside your joints. It affects roughly 1 in 150 adults worldwide and is one of the most painful joint conditions you can experience. The good news: it’s well understood, treatable, and largely preventable once you know what drives it.
How Uric Acid Becomes a Problem
Your body constantly breaks down substances called purines, which come from the foods you eat and from your own cells as they naturally turn over. The final waste product of that breakdown is uric acid. Normally, uric acid dissolves in your blood, passes through your kidneys, and leaves your body in urine. A smaller portion exits through your gut.
Problems start when uric acid levels climb above about 6.8 mg/dL in the blood. At that concentration, the blood becomes supersaturated, meaning it can no longer keep all the uric acid dissolved. The excess begins to crystallize into tiny, needle-like shards of monosodium urate that settle into joints and surrounding tissue. These crystals are especially likely to form in cooler parts of the body, like the base of the big toe, because urate is less soluble at lower temperatures and in more acidic environments.
Crystal deposits can sit quietly in a joint for months or even years. But when crystals break loose into the joint fluid, your immune system treats them as foreign invaders. White blood cells flood the area and release a cascade of inflammatory chemicals. That’s a gout flare: sudden, intense pain driven by your own immune response reacting to crystals your body created.
What Causes Uric Acid to Build Up
Hyperuricemia, the medical term for elevated uric acid, comes down to two basic problems: your body makes too much uric acid, your body doesn’t get rid of enough, or both at once. In most people with gout, the kidneys are the bottleneck. They simply don’t excrete uric acid efficiently enough to keep blood levels in a safe range.
On the production side, a specific enzyme in the liver converts purines into uric acid as the final step. When purine breakdown ramps up, whether from diet, rapid cell turnover, or metabolic stress, more uric acid enters the bloodstream than the kidneys can handle. Fructose and alcohol are particularly effective at accelerating this process because they deplete the cell’s energy stores, which triggers a burst of purine breakdown.
Genetics play a major role. Variations in the kidney and gut transporters responsible for filtering uric acid out of the body are among the strongest inherited risk factors. If your parents or siblings have gout, your own risk is significantly higher regardless of diet.
Medications That Raise Uric Acid
Several common prescriptions can tip the balance. Diuretics (water pills), including hydrochlorothiazide and loop diuretics, increase uric acid reabsorption in the kidneys, effectively recycling it back into the blood instead of flushing it out. Low-dose aspirin can have a similar effect by reducing uric acid excretion. If you take either of these regularly and have a history of gout, it’s worth discussing alternatives with your doctor.
Foods and Drinks That Trigger Flares
Certain foods are packed with purines and directly raise uric acid levels after you eat them. The highest-risk category is organ meats: liver, kidney, and sweetbreads. Red meat (beef, lamb, pork) and specific types of seafood, particularly anchovies, sardines, shellfish, and cod, are also significant sources.
Alcohol is a double threat. It both increases uric acid production and slows its excretion. Beer is the worst offender because it contains its own purines on top of the alcohol. Distilled liquors carry a similar risk, though wine appears somewhat less problematic in moderate amounts.
Sugary foods and drinks deserve more attention than most people realize. High-fructose corn syrup, found in soft drinks, some cereals, baked goods, and even canned soups, raises uric acid through the same energy-depletion pathway as alcohol. Cutting back on sweetened beverages can make a measurable difference in flare frequency.
That said, diet alone rarely lowers uric acid enough to control gout without medication. It can reduce the number and severity of flares, but most people with established gout need medical treatment to get their levels below the target of 6 mg/dL.
What a Gout Flare Feels Like
Gout flares almost always strike suddenly, often waking people up in the middle of the night. The joint at the base of the big toe is the most common target, but ankles, knees, elbows, wrists, and fingers are all vulnerable. The affected joint becomes swollen, hot, red, and extraordinarily tender. Many people describe the pain as the worst they’ve ever experienced; even the weight of a bedsheet can feel unbearable.
Pain peaks within the first 4 to 12 hours. After that initial wave, a duller discomfort typically lingers for days to weeks as the inflammation gradually settles. Early flares often resolve on their own within a week or two, which can create a false sense that the problem has gone away.
The Four Stages of Gout
Gout doesn’t arrive all at once. It progresses through distinct phases, and understanding where you are in that progression matters for treatment decisions.
Asymptomatic hyperuricemia is the silent first stage. Uric acid levels are elevated and crystals may already be forming in joints, but there’s no pain or swelling yet. Many people stay in this stage for years without knowing anything is wrong.
Acute gout is the first flare, the moment crystals trigger a full inflammatory response. This is usually what sends people to a doctor. Flares at this stage tend to involve a single joint and resolve within days to two weeks.
Intercritical gout is the quiet period between flares. You feel fine, but crystals are still present in the joint. Without treatment, the intervals between flares tend to shorten over time, and attacks may start involving more than one joint.
Chronic tophaceous gout is the advanced stage, typically reached only after years of uncontrolled disease. Uric acid deposits form visible, chalky lumps called tophi under the skin, commonly at the big toe or elbow. Joint pain becomes more constant, and permanent joint damage can develop. This stage is largely preventable with proper management.
How Gout Is Diagnosed
The gold standard for confirming gout is drawing fluid from the affected joint with a needle and examining it under a polarizing microscope. Urate crystals appear as bright yellow, needle-shaped structures. This test distinguishes gout definitively from other types of crystal arthritis, where the crystals have a different shape and behave differently under polarized light.
Blood tests showing elevated uric acid support the diagnosis but aren’t enough on their own. Some people have high uric acid and never develop gout, while others can have a flare even when blood levels test in the normal range during an attack (because the uric acid is busy forming crystals in the joint). Imaging and clinical history fill in the gaps when joint aspiration isn’t practical.
Who Gets Gout
Gout is far more common in men than women, particularly between the ages of 30 and 50. Women’s risk rises after menopause, when the protective effect of estrogen on uric acid excretion drops off. Obesity, high blood pressure, diabetes, and kidney disease all increase your likelihood of developing gout because they either raise uric acid production or impair its removal.
The condition has been rising steadily in prevalence over the past few decades, driven largely by increasing rates of obesity and metabolic syndrome, along with greater consumption of sugar-sweetened beverages. It’s no longer the “disease of kings” it was once called. It affects people across every demographic, and its connection to common modern dietary patterns makes it one of the most relevant joint diseases today.