Can kidney stones be prevented?

Can kidney stones be prevented?

In many cases, yes, kidney stones can be reduced or even prevented. The risk depends on the type of stone, your diet, how much you drink, and whether you have any underlying health conditions. Some people are more prone to stones because of family history or previous episodes.

Prevention is especially important if you have had a kidney stone before. Once you have had one stone, the chance of getting another is higher. Simple changes often make a big difference.

Drink enough fluids

Staying well hydrated is one of the best ways to help prevent kidney stones. It helps dilute the substances in urine that can form stones. In the UK, this is particularly important during warmer weather or if you exercise a lot.

Water is usually the best choice. Aim to drink enough so that your urine is pale yellow or clear most of the time. If your urine is dark, you may need to drink more.

Adjust your diet

Diet can play a role in stone formation, although the right advice depends on the type of stone. For many people, reducing salt intake helps because too much salt can increase calcium in the urine. Eating a balanced diet with plenty of fruit and vegetables is also useful.

It is a common myth that all calcium should be avoided. In fact, getting enough calcium from food may help prevent some stones. The important thing is to avoid taking unnecessary calcium supplements unless your GP or specialist advises them.

Be careful with certain foods

Some stones are linked to oxalate, a natural substance found in foods such as spinach, rhubarb, beetroot, nuts, and chocolate. If you are at risk of calcium oxalate stones, your clinician may suggest moderating these foods rather than cutting them out completely.

Animal protein can also affect stone risk in some people. Eating too much red meat, chicken, or fish may raise the chance of stones in certain cases. A GP or dietitian can help you find the right balance.

Know when medical help is needed

If you have had kidney stones before, your GP may recommend tests to find out why they happened. This may include urine tests, blood tests, or analysis of the stone itself if one is passed. Treatment can then be tailored to your risk factors.

Some people may need medicine to help prevent new stones. This is more likely if stones keep coming back or if there is a clear medical cause. Follow-up with your GP or urologist is important.

Can every kidney stone be prevented?

Not always. Some stones happen even when you do everything right, especially if you have a condition that increases your risk. However, many people can lower their chances significantly with lifestyle changes and appropriate medical advice.

If you are worried about kidney stones, speak to your GP. They can help you understand your risk and suggest practical steps that suit your situation.