Calcium rich foods overview

Overview

Calcium is a mineral that your body needs to build strong bones and teeth, and to help your muscles, nerves, and heart work properly. Calcium-rich foods are foods that contain a lot of calcium, such as dairy products, leafy green vegetables, and fortified foods.

Low calcium intake is common in many parts of the world, especially among people who do not eat dairy or who have certain medical conditions.

Everyone needs calcium, but it is especially important for children, teenagers, pregnant and breastfeeding women, and older adults.

Symptoms

Common symptoms

• Most people with low calcium do not have symptoms until their levels are very low.
• Muscle aches, cramps, or twitching
• Tingling or numbness in fingers, toes, or around the mouth

Symptoms in children

• Slow growth or short stature
• Weak or brittle bones that may break easily
• Tooth decay or delayed tooth development

Symptoms in older adults

• Increased risk of bone fractures, especially hip fractures
• Loss of height over time
• Back pain from collapsing vertebrae

Causes

Main causes

• Not eating enough calcium-rich foods in your diet
• Problems absorbing calcium, such as in coeliac disease or after gastric bypass surgery
• Certain medications, like long-term use of steroids (corticosteroids)

Risk factors

• Being lactose intolerant or avoiding dairy for other reasons
• Eating a vegan or very low-calorie diet without planning for calcium sources
• Having kidney disease or a parathyroid disorder
• Being over age 65, especially if you are a woman after menopause

When to see a doctor

See a doctor urgently if:

• If you have symptoms of severe low calcium, such as painful muscle cramps or seizures, seek emergency care.

Book a routine appointment if:

• If you are concerned about your calcium intake or have symptoms like mild tingling or muscle twitching, make an appointment with your GP.
• Older adults should discuss bone health with their doctor, especially after a fall or fracture.

Diagnosis

Low calcium (hypocalcemia) is diagnosed with a blood test that measures the amount of calcium in your blood.

Tests that may be done

• Blood test for total calcium or ionized calcium
• Albumin level (to adjust for protein levels)
• Sometimes a parathyroid hormone (PTH) test or vitamin D test

What to expect at your appointment

Your doctor will take a small sample of blood from your arm. Results usually come back within a few days. You may be asked about your diet, symptoms, and medicines.

Treatment

Treatment focuses on increasing your calcium intake through diet and, if needed, supplements. The underlying cause is also addressed.

Self-care at home

• Eat more calcium-rich foods such as milk, yoghurt, cheese, fortified plant milks, tofu, almonds, and leafy greens like kale and broccoli.
• Make sure you get enough vitamin D (from sunlight, fortified foods, or supplements) because it helps your body use calcium.
• Limit excessive salt, caffeine, and fizzy drinks, as they can reduce calcium absorption.

Medical treatments

If diet alone is not enough, your doctor may recommend a calcium supplement (calcium carbonate or calcium citrate) and possibly vitamin D supplements. Always follow your doctor's advice on dosage and type.

When is surgery considered?

Surgery is not used to treat low calcium intake. However, if low calcium is caused by a problem with the parathyroid glands, surgery on the gland might be needed in some cases.

Living with this condition

Aim to include a calcium-rich food at every meal. For example, have a glass of milk with breakfast, add yoghurt to lunch, and include leafy greens with dinner.

Lifestyle tips

• Do weight-bearing exercises like walking, jogging, or dancing to strengthen bones.
• Avoid smoking and limit alcohol, as they can weaken bones.
• If you are vegan or lactose intolerant, look for fortified foods or talk to a dietitian.

Diet and exercise

Combine calcium-rich foods with regular physical activity. Aim for at least 30 minutes of weight-bearing exercise most days. Eat a balanced diet that includes protein and magnesium, which also support bone health.

Mental health and emotional wellbeing

Worrying about bone health or dietary restrictions can be stressful. Remember that small changes can make a big difference. If you feel anxious, talk to your doctor or a counsellor.

Prevention

Yes, in most cases you can prevent low calcium by eating a balanced diet with enough calcium-rich foods throughout your life. Getting enough vitamin D and exercise also helps.

Screening programmes

Routine screening for calcium level is not usually needed. However, if you are at risk (e.g., older age, malabsorption), your doctor may recommend periodic blood tests.

Complications

If left untreated

• Thin bones (osteopenia or osteoporosis) that break easily
• Tooth decay and gum disease
• Nerve problems like tingling or muscle weakness

Long-term outlook

With the right steps, you can maintain healthy calcium levels and strong bones. Even if you have had low calcium in the past, improving your diet and lifestyle can help reduce your risk of fractures and other problems.

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