What Causes Kidney Stone and Foods to Eat & Avoid

by Meghalin Gupta

Kidney stones are known as renal lithiasis or nephrolithiasis.

They are hardened deposits of minerals and salts which are formed at the inner lining of the kidney or urinary tract. They vary in size, some being so small that they are passed via urine unnoticed while others are bigger in dimensions, making it difficult for the kidneys to flush it out and function properly.

As per the best nutritionist in Delhi, they are formed when the concentration of mineral is high or when the urine volume is reduced (possibly due to dehydration). When the urine is high in minerals, the minerals form crystals by adhering together.

Types of renal stones: 

– Calcium oxalate stones

– Calcium phosphate stones

– Uric acid stones

– Cystine stones


The leading purpose of kidney stones is the lack of water in the body. Its more common in individuals who do not consume water as per the recommended 10 -12 glasses per day. Due to this, the body is unable to dilute the uric acid, a component of urine & the urine becomes more acidic. An excessively acidic environment in urine can lead to the formation of renal stones.

A kidney stone is more common in men than women between the ages of 30 -50 years. If a person has a family problem of renal stones, the risk increases for the individual. A previous kidney stone formation also increases stone formation in the future if preventative measures are not taken. Certain medications for migraine & seizures can also increase the likelihood of kidney stone development. In some cases, excessive & long term usage of vitamin D & calcium supplements can lead to high calcium levels in the body resulting in renal stone formation.

The kidney stones do not show symptoms until they are moving around in the kidney or passes into ureter.

In such cases, following Symptoms and Signs happen:

1.Severe pain inside and back (below the ribs)

2. radiating pain – towards the groin and lower abdomen

3. fluctuating intensity of pain

4. pain while urinating (painful micturition)

5. Persistent urge to urinate

6. cloudy & foul-smelling urine

7. increased urine frequency 

8. fever with chills in case of infection

9. The quantity of urine reduced.

10. location of pain may change

Diet for kidney stone: 

Hydration: Stay hydrated throughout the day.  Drink at least the recommended 10 12 glasses of water a day.

Boost on vitamin C: this can be done by increasing the intake of citrus food in the diet(lemon, orange, sweet lime, bell pepper, guava, amla, etc.)

Check on vitamin D and calcium: The high or low levels of vitamin D and calcium can also lead to renal stone formation. Thus, as per the requirement, the diet can be altered. In case of low status. Calcium & vitamin D needs to be boosted through diet & superfoods

Limit on excess salt consumption high sodium levels in the body can lead to calcium build-up in urine

Increased plant-based diet and cut down on excessive animal protein intake. Many protein sources, such as red meat, pork, chicken, poultry, fish & eggs can increase the amount of uric acid production leading to renal stone in high-risk individuals states the best nutritionist in Mumbai.

Eat oxalates wisely, sources include chocolates, beetroot, nuts, tea, spinach, sweet potatoes, etc.

Avoid carbonated drinks as they contain high phosphates, another causative factor for renal stones.

Avoid alcohol since it dehydrates the body, increasing the risk of renal stone formations.

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