If you have osteoporosis it means that you have lost some bone material. Your bones become less dense. This makes them more prone to break (fracture). 'Thinning' of the bones (osteoporosis) mainly affects older people but it can affect someone of any age.
What is osteoporosis?
Osteoporosis is a condition that affects bone strength. (The word osteoporosis literally means 'porous bones'). Bone is made of tough, elastic fibres (collagen fibres) and gritty, hard material (minerals). It is a living tissue and contains cells that make, mould and take back up (resorb) bone. Initially, as you grow, bone forms faster than it is resorbed. But, as you get older, this reverses. As a result, from about the age of 35, you start to lose a certain amount of bone material overall. Your bones become less dense and less strong. The amount of bone loss can vary. If you have a lot of bone loss then you have 'thinning' of the bones (osteoporosis). If you have osteoporosis, your bones can break more easily than normal, especially if you have an accident such as a fall. If you have a milder degree of bone loss, this is known as osteopenia.
How common is osteoporosis?
In England and Wales, more than two million women are thought to have 'thinning' of the bones (osteoporosis). Women lose bone material more rapidly than men, especially after the menopause when their levels of oestrogen fall. Oestrogen is a hormone and helps to protect against bone loss. At the age of 50, about 2 in 100 women have osteoporosis. This rises to 1 in 4 women at the age of 80. However, osteoporosis can also affect men. Over a third of women and one in five men in the UK have one or more bone fractures because of osteoporosis in their lifetime. The National Osteoporosis Guideline Group (NOGG) estimates there are 536,000 fractures every year in the UK caused by osteoporosis.
Who is at risk of osteoporosis?
All men and women have some risk of developing 'thinning' of the bones (osteoporosis) as they become older, particularly over the age of 60. As mentioned above, women are more at risk than men. The following situations may also lead to excessive bone loss and so increase your risk of developing osteoporosis. If you:
- Are a woman and you had your menopause before the age of 45.
- Have already had a bone fracture after a minor fall or bump.
- Have a strong family history of osteoporosis (that is, a mother, father, sister or brother affected).
- Have a body mass index (BMI) of 18.5 or less (that is, you are very underweight) - for example, if you have anorexia nervosa. In this situation, your levels of oestrogen are often low for long periods of time and, combined with a poor diet, this can affect bones.
- Are a woman and your periods stop for six months to a year or more before the time of your menopause. This can happen for various reasons. For example, over-exercising or over-dieting.
- Have taken, or are taking, a steroid medicine (such as prednisolone) for three months or more. A side-effect of steroids is to cause bone loss. For example, long-term courses of steroids are sometimes needed to control arthritis or certain other conditions. See the separate leaflet called Preventing Steroid-induced Osteoporosis for more details.
- Are a smoker.
- Have an alcohol intake of more than four units per day. See the separate leaflet called Alcohol and Sensible Drinking for details of recommended safe limits of alcohol.
- Lack calcium and/or vitamin D (due to a poor diet and/or little exposure to sunlight).
- Are not very mobile. For example if you have to use a wheelchair, or are confined to a bed or chair and unable to get about.
- Have, or had, certain medical conditions. Some conditions or their treatments add to the risk of osteoporosis. For example:
'Thinning' of the bones (osteoporosis) usually develops slowly over several years, without any symptoms. However, after a certain amount of bone loss, the following may occur.
A bone fracture after a minor injury such as a fall
This is often the first sign or indication that you have osteoporosis. If you have osteoporosis, the force of a simple fall to the ground (from the height of a standard chair or less) is often enough to fracture a bone. A simple fall to the ground such as this does not usually cause a fracture in someone without osteoporosis. A bone fracture after a minor injury like this is known as a fragility fracture.
The most common fragility fractures occur in the hip, the wrist and the bones that make up the spine (vertebrae). A fractured bone in an older person can have serious consequences in some people. For example, about half the people who have a hip fracture are unable to live independently afterwards because of permanent mobility problems. See the separate leaflet called Hip Fracture.
Having weaker bones does not in itself give you any symptoms. Unless you have had a fracture, aches and pains are NOT a symptom of osteoporosis. It does not cause pain other than as the result of a fracture. If you have not had a fracture and you have a pain, this will be due to another problem, not your osteoporosis. Having said that, fractures in the vertebrae are often not picked up. So if you have a new severe back pain and you know you have osteoporosis, you should tell your doctor. An X-ray can then be arranged to check you have not had a fracture.
Loss of height, persistent back pain and a bent forward (stooping) posture
These symptoms can occur if you develop one or more fractured vertebrae. A vertebra affected by osteoporosis may fracture even without a fall or significant force on it. The vertebrae can become squashed following a fracture. If severe, a bent forward posture may affect your ability to go about your usual daily activities. It can also affect your breathing, as your lungs have less room to expand within your chest.
Before any symptoms develop
The ideal situation is that 'thinning' of the bones (osteoporosis) should be prevented in the first place. If this is not possible, the next best thing is for diagnosis and treatment of osteoporosis as necessary before any symptoms or fractures occur.
At present, there is no national screening programme in the UK for osteoporosis. However, if you have a risk factor, your GP or other health professional may ask you questions to see how many other risk factors for osteoporosis (listed above) apply to you. A risk calculator is available to determine your risk of developing osteoporosis, depending on the number of risk factors that you have. There are two commonly used risk calculators. One is called FRAX®, and the other is called
If you are found to be at increased risk, or your risk is uncertain, you may be referred for a DXA scan. DXA stands for dual-energy X-ray absorptiometry. You may also see it referred to as a 'DEXA scan'. It is a scan that uses special X-ray machines to check your bone density. A DXA scan can confirm osteoporosis. See the separate leaflet called DXA Scan.
After symptoms develop
Osteoporosis is often first diagnosed when you break a bone after a minor bump or fall. Even after the first fracture has occurred, treatment can help to reduce your risk of further fractures. If you are thought to have sustained a fragility fracture, you will usually be referred for a DXA scan to look for signs of osteoporosis. However, sometimes women of 75 or older who have a fracture are assumed to have had a fragility fracture. In this group of women, treatment for osteoporosis may be started without having a DXA scan first. This is because osteoporosis is so common in this age group.
A newer test to look for osteoporosis is called digital X-ray radiogrammetry (DXR). It is easier to perform than a DXA scan because it requires less technical equipment. It may sometimes be used as a screening test for osteoporosis - for example, in someone who has broken their wrist after a fall. However, it is not as sensitive as a DXA scan at picking up all cases of osteoporosis. So, a DXA scan remains the gold standard test.
Ultrasound scans are also sometimes used as a screening test. They usually assess the bone at your heel. Again, they are not as sensitive as DXA and not used very often.
What can I do to prevent osteoporosis?
The following may help to prevent, or slow down, bone loss. This advice is for everyone. However, it is particularly important if you are at increased risk of developing 'thinning' of the bones (osteoporosis). If you already have osteoporosis, the following measures can also help to try to slow down any bone loss.
Exercise can help to prevent osteoporosis. The pulling and tugging on the bones by your muscles during exercise help to stimulate bone-making cells and strengthen your bones. Regular weight-bearing exercise throughout life is best but it is never too late to start. This means exercise where your feet and legs bear your body's weight, such as brisk walking, aerobics, dancing, running, etc. For older people, a regular walk is a good start. However, the more vigorous the exercise, the better. For most benefit you should exercise regularly - aiming for at least 30 minutes of moderate exercise or physical activity at least five times per week. (Note: because swimming is not weight-bearing exercise, this is not so helpful in preventing osteoporosis.)
Muscle strengthening exercises are also important. They help to give strength to the supporting muscles around bones. This helps to increase tone, improve balance, etc, which may help to prevent you from falling. Examples of muscle strengthening exercises include press-ups and weight lifting but you do not necessarily have to lift weights in a gym. There are some simple exercises that you can do at home. See the separate leaflet called Physical Activity For Health for more details.Feature
Public Health England advises 150 minutes of physical activity each week, in bouts of 10 minutes or more. This might feel like a tall order, but it can be done in a way that becomes an enjoyable part of your life. Honestly.— Dr Mary Harding, The best forms of exercise for those who hate the gym
Food and diet
Calcium and vitamin D are important for bone health. Your body needs adequate supplies of vitamin D in order to take up (absorb) the calcium that you eat or drink in your diet. The recommended daily intake for calcium in adults over the age of 50 is at least 1000 mg per day.
Calcium - you can get 1000 mg of calcium most easily by:
- Drinking a pint of milk a day (this can include semi-skimmed or skimmed milk); plus
- Eating 50 g (2 oz) of hard cheese such as Cheddar or Edam, or one pot of yoghurt (125 g), or 50 g of sardines.
Bread, calcium-fortified soya milk, some vegetables (curly kale, okra, spinach and watercress) and some fruits (dried apricots, dried figs and mixed peel) are also good sources of calcium. Butter, cream, and soft cheeses do not contain much calcium. You can check how much calcium you eat with an There are several available for this online. See also the separate leaflet called Calcium-rich Diet for more details.
There is a possibility that taking calcium supplements when you have enough calcium in your diet might cause other problems such as heart disease. Therefore, it is best not to take calcium supplements without first discussing this with your doctor.
Vitamin D - there are only a few foods that are a good source of vitamin D. Approximately 115 g (4 oz) of cooked salmon or cooked mackerel provide 400 IU of vitamin D. The same amount of vitamin D can also be obtained from 170 g (6 oz) of tuna fish or 80 g (3 oz) of sardines (both canned in oil). Vitamin D is mainly made by your body after exposure to the sun. The ultraviolet rays in sunshine trigger your skin to make vitamin D. This may not provide as much vitamin D as you need. In the UK it is advised that everyone should consider vitamin D supplements in the winter, and some people should have them all year round. See the separate leaflet called Vitamin D Deficiency for more details.
If you are unsure about whether you should have calcium and/or vitamin D supplements, ask your practice nurse or GP.
Smoking and drinking
Chemicals from tobacco can get into your bloodstream and can affect your bones, making bone loss worse. If you smoke, you should try to make every effort to stop. Also, you should try to cut down on your alcohol intake if you drink more than fourteen units of alcohol per week. See the separate leaflets called Quit Smoking (Smoking Cessation) and Alcohol and Sensible Drinking for more details.
Hormone replacement therapy
Hormone replacement therapy (HRT) contains oestrogen. A few years ago, HRT was widely used to prevent osteoporosis. However, the studies on the possible long-term health risks of HRT have meant that it is now not commonly used for this purpose alone (except in women who have had an early menopause). This is because of the small increased risk of breast cancer if HRT is used in the long term.
If you have 'thinning' of the bones (osteoporosis) but have not had a fragility fracture, your doctor will be able to advise whether or not treatment is recommended in your case. They may use a special risk calculator to look at your risk of having a fragility fracture, to help with this decision. This incorporates things such as:
- Your age.
- Your bone density measurements on a DXA scan.
- Any history in your family of hip fracture.
- How much alcohol you drink.
- Whether you smoke.
- Your BMI.
- Whether you have other medical conditions such as rheumatoid arthritis.
If you are found to have osteoporosis and you have already had a fragility fracture, medication is usually recommended to help prevent a further fracture.
If treatment is started, repeat DXA scanning on a regular basis may be suggested to look at how effective treatment is. Lifestyle measures and prevention of falls are important for all people with osteoporosis (see below).
Medication for osteoporosis
Various medicines are available that can help to prevent and treat bone loss. Options used to treat 'thinning' of the bones (osteoporosis) include the following.
Bisphosphonates are the most commonly used medicines to treat osteoporosis. They work on the bone-making cells. They can help to restore some lost bone and help to prevent further bone loss. Research studies have shown that the risk of bone fracture may be reduced by taking one of these medicines if you have osteoporosis. They may also help to reduce the chance of a second fracture if you have already had a fragility fracture.
Bisphosphonates are a group of medicines and there are several options, which are available as tablets, liquid or an injection. See the separate leaflet called Bisphosphonates.
This medicine may be an alternative for women with osteoporosis who have been through the menopause if a bisphosphonate is not suitable or is not tolerated. It is given twice a year by injection and helps to slow down bone loss. As with bisphosphonates, there is a small risk of a rare problem of the jawbone, called osteonecrosis. However, it is thought that in the vast majority of people, the benefits of treatment outweigh the risks.
Raloxifene is another option for some women with osteoporosis. It is usually only used if a woman has already had a fragility fracture. It works by mimicking the natural effects of oestrogen. This gradually reverses the excessive breakdown of bone that happens at the menopause, and makes bones stronger. However, there may be a small increased risk of developing a deep vein thrombosis in some people who take raloxifene. You should discuss this with your doctor.
Parathyroid hormone peptide medicines
These medicines are sometimes suggested for people who have already had a fragility fracture. There are two of these medicines available: teriparatide (brand name Forsteo®) and parathyroid hormone (brand name Preotact® - not used in the UK). They are given by an injection under the skin every day for two years. Studies have shown that they can reduce the risk of some osteoporotic fractures. These medicines are only recommended if other options cannot be tolerated or taken. Alternatively, they may be used if someone has been taking another treatment for one year and they have another fragility fracture and their bone density is getting worse.
Calcium and vitamin D tablets
Your body needs plenty of calcium and vitamin D to make bone. Unless your doctor is sure that you have an adequate intake of calcium and have enough vitamin D, they will often suggest calcium and/or vitamin D supplements in addition to one of the above medicines. These come in combined calcium and vitamin D tablets, or separately.
This was an option occasionally used for treating osteoporosis. Research has recently shown that risks of this treatment may be worse than the benefits for some patients. As a result of these warnings fewer people used this medication so the manufacturer withdrew it in 2017 for commercial reasons. If you are taking this medication, your GP will discuss an alternative with you.
Other measures are also important
Medication will not restore all lost bone. Also, medication may not be suggested for all people with 'thinning' of the bones (osteoporosis). So, there are a number of lifestyle measures that are also important in treating osteoporosis. They include:
- Weight-bearing exercise.
- Muscle strengthening exercises.
- Not smoking.
- Keeping any alcohol drinking to within the levels as described earlier.
You can also take measures to help prevent yourself from falling and breaking a bone.
- Check your home for hazards such as uneven rugs, trailing wires, slippery floors, etc.
- Regular weight-bearing exercise may help to prevent falls (as described above).
- Are your vision and hearing as good as possible? Do they need checking? Do you need glasses or a hearing aid?
- Beware of going out in icy weather.
- Do you take any medicines that can make you drowsy or that may lower your blood pressure too much and increase your risk of falls? Can they be changed? You can discuss this with your doctor.
- Hip protectors may also possibly help in some people in nursing homes or residential care settings. These are special protectors that you wear over your hips that aim to cushion your hips if you do have a fall.
If you have had a fall, or have difficulty walking, you may be advised to have a formal falls risk assessment. This involves various things such as:
- A physical examination.
- Checking your vision, hearing and ability to walk.
- Reviewing your medication.
- Reviewing your home circumstances.
Following this, where appropriate, some people are offered suggestions such as a muscle strengthening and balance programme, or recommendations on how to reduce potential hazards in their homes.
Further reading and references
; National Osteoporosis Guideline group (NOGG) 2017
; NICE Clinical Guideline (August 2012, updated February 2017)
; Scottish Intercollegiate Guidelines Network - SIGN, (March 2015)
; Scientific Advisory Committee on Nutrition (July 2016)
; NICE Technology Appraisal Guidance, August 2017
; NICE Technology Appraisal Guidance, October 2010
; Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men. Cochrane Database Syst Rev. 2014 Apr 144:CD000227. doi: 10.1002/14651858.CD000227.pub4.
; Clinical Practice. Postmenopausal Osteoporosis. N Engl J Med. 2016 Jan 21374(3):254-62. doi: 10.1056/NEJMcp1513724.
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