By Biopassion Diagnostics
Your bones hold you up, protect your organs and store the calcium your body needs every day. Yet most of us think about bone strength only after a fracture. By then, the damage has often been building quietly for years.
The good news is that you can build and protect your bones at any age. Food, movement, sunlight and the right tests all play a part.
This guide explains how bones work, what weakens them, which signs to watch for, and how to keep your skeleton strong for life.
How do bones work?
Bone is living tissue. It is not a fixed frame like the steel in a building. Instead, your body breaks down old bone and builds new bone all the time. Doctors call this process remodelling.
During childhood and the teenage years, your body builds more bone than it removes. Most people reach their peak bone mass by around age 30. After that, bone slowly starts to thin. Therefore, the more bone you build when you are young, the more you have in the bank later.
Three things matter most for strong bones:
- Calcium. It is the main building block of bone.
- Vitamin D. It helps your body absorb calcium from food.
- Movement. Bones respond to load. When you use them, they get stronger.
What is osteoporosis?
Osteoporosis means “porous bone”. Bones lose density and become thin and fragile. As a result, even a minor fall, a cough or a sudden bend can cause a fracture. The hip, spine and wrist are the most common sites.
A milder stage of bone loss is called osteopenia. It is a warning sign, and it gives you time to act.
Why it is a silent problem
Bone loss usually causes no pain. Many people only learn about it when a bone breaks. Possible warning signs include:
- Losing height over the years
- A stooped or curved upper back
- Sudden back pain, which may come from a small spine fracture
- A fracture after a minor fall or knock
- Bones that feel weak or break easily
What weakens your bones?
Some risk factors you cannot change. Others you can.
Risks you cannot change
- Age. Bone loss speeds up as we get older.
- Sex and hormones. Women lose bone faster after menopause, because oestrogen drops. Low testosterone in men also affects bones.
- Family history. Genes influence your peak bone mass and how fast you lose bone.
- Small body frame.
Risks you can change
- Too little calcium or vitamin D over many years
- Low physical activity, especially long hours of sitting
- Smoking and heavy alcohol use
- Being underweight or losing weight too fast
- Long term use of some medicines, such as steroid tablets. Never stop a prescribed medicine on your own. Talk to your doctor first.
Medical conditions that affect bones
Some health problems interfere with how your body handles calcium and bone. Examples include overactive thyroid, parathyroid gland disorders, kidney disease, coeliac disease, diabetes and long term inflammatory conditions. If you have one of these, bone checks matter even more.
Eat for strong bones
Your plate is your first line of defence. Here are bone friendly foods that are easy to find in Kenya.
- Dairy. Milk, maziwa lala, yoghurt and cheese are rich in calcium.
- Small fish eaten with the bones. Omena (dagaa) and similar small fish provide calcium, along with protein.
- Green leafy vegetables. Sukuma wiki (kale), managu and cabbage add calcium and other bone nutrients.
- Beans, lentils and ndengu. They give protein and minerals.
- Eggs and oily fish. Eggs, tilapia, sardines and similar fish contain some vitamin D.
- Fortified foods. Some milk, cereals and flours have added vitamin D or calcium. Check the label.
- Fruit and vegetables. They support overall bone and muscle health.
Protein also matters. Your bones need it, so include eggs, fish, meat, beans or dairy in your meals through the day.
How much calcium and vitamin D do you need?
Health authorities give these general guides:
- Adults up to age 50 need about 1,000 mg of calcium and 400 to 800 IU of vitamin D a day.
- Adults over 70 need about 1,200 mg of calcium and 800 IU of vitamin D a day. Women over 50 are also usually advised to aim for 1,200 mg of calcium.
- Your doctor may suggest more vitamin D if your blood level is low.
Try to get calcium from food first. Too much calcium from supplements can cause problems, so speak to your doctor before starting any supplement.
Get some sunshine
Your skin makes vitamin D when it is exposed to sunlight. Kenya is a sunny country. Even so, many people spend most of the day indoors, in offices, matatus and shops, and low vitamin D is still common worldwide.
Short, regular periods outdoors help. A walk during the day, with your arms and face exposed, is a good habit. Avoid long exposure that burns your skin.
Move to build bone
Exercise is one of the most powerful bone tools you have. Aim for a mix of the following.
- Weight bearing exercise. Brisk walking, jogging, dancing, hiking and climbing stairs make your bones work against gravity.
- Resistance exercise. Lifting weights, using resistance bands or doing bodyweight moves such as squats builds muscle, which in turn protects bone.
- Balance exercise. Standing on one leg, tai chi and yoga reduce your risk of falls.
Aim for about 30 minutes of activity on most days. If you already have low bone density, ask your doctor which exercises are safe, and avoid activities that put you at risk of falling.
Prevent falls
For older adults, a fall is often what turns weak bones into a broken hip. Simple steps help:
- Keep floors clear of clutter, and secure loose rugs.
- Improve lighting, especially on stairs and in bathrooms.
- Wear flat, supportive shoes with good grip.
- Check your eyesight regularly.
- Review your medicines with your doctor, since some cause dizziness.
Tests that check your bone health
Because bone loss is silent, testing is the best way to catch problems early.
Bone density scan (DEXA)
A DEXA scan uses a very low dose of X rays to measure the density of your bones, usually at the hip and spine. It is the standard test for diagnosing osteoporosis, and it also helps predict your risk of future fractures. Your doctor will refer you for this imaging test when needed.
Blood tests that support bone care
Laboratory tests help find the reasons behind weak bones, and they show whether your body has what it needs to build bone. Your doctor may order:
- Vitamin D (25 hydroxy vitamin D). It shows whether your level is low.
- Calcium. It checks the level of calcium in your blood.
- Phosphate and alkaline phosphatase (ALP). They give clues about bone and mineral balance.
- Parathyroid hormone (PTH). It helps control calcium. Problems with this gland can weaken bones.
- Thyroid function tests. An overactive thyroid can speed up bone loss.
- Kidney function tests. The kidneys help activate vitamin D and balance minerals.
- Liver function tests. The liver is also involved in vitamin D processing.
- Full blood count and inflammation markers. They help detect other conditions.
- Hormone tests. They may be considered in some women and men with signs of hormone changes.
Not everyone needs every test. Your clinician will choose the right ones based on your age, symptoms and risk factors.
Who should be tested?
Talk to your doctor about bone health if you:
- Are a woman who has gone through menopause, or a man over 65
- Have broken a bone from a minor fall
- Have lost height or developed a stooped back
- Have a family history of osteoporosis or hip fracture
- Take steroids or other medicines that affect bones for a long time
- Have a thyroid, parathyroid, kidney, bowel or hormone condition
- Smoke, drink heavily, or have a very low body weight
Bone health at every stage of life
- Children and teens: This is the bone building window. Encourage dairy or other calcium rich foods, outdoor play and sports.
- Adults in their 20s and 30s: Keep building and maintaining. Stay active, avoid smoking and limit alcohol.
- Women around menopause: Bone loss speeds up. Ask your doctor about bone checks, and focus on calcium, vitamin D and strength training.
- Men and women over 60: Prioritise fall prevention, strength and balance, and regular reviews of your bone health.
Common myths about bone strength
- “Only old women get weak bones.” Not true. Men and younger adults can be affected too, especially with risk factors.
- “If I drink milk, my bones are safe.” Not true. Bones also need vitamin D, protein and exercise.
- “Rest is best for weak bones.” Not true. Safe, regular activity keeps bones stronger.
- “I would feel it if my bones were thinning.” Not true. Bone loss is usually painless until a fracture occurs.
Take charge of your bone health with Biopassion Diagnostics
Strong bones are built over a lifetime, and testing helps you stay ahead. At Biopassion Diagnostics, we are a patient centred medical laboratory in Nairobi, Kenya, accredited by KMLTTB. We offer wellness screening and specialised laboratory services with timely, accurate results and convenient sample collection.
Talk to us about the blood tests that can support your bone health, such as vitamin D and related tests. You can then share your results with your doctor to plan the next step.
Call or WhatsApp: +254 704 150 555 (0704 150 555)
Website: www.biopassiondiagnostics.com
Your Health IS OUR PASSION.
This article is for education only. It does not replace advice from your doctor.
Frequently asked questions
What makes bones strong?
Strong bones depend on enough calcium, vitamin D and protein, regular weight bearing and resistance exercise, and healthy habits such as not smoking and limiting alcohol. Genes and hormones also play a part.
How can I check my bone strength?
A DEXA bone density scan is the standard test. Blood tests, such as vitamin D, calcium and parathyroid hormone, help find causes of bone loss and check whether your body has what it needs.
Which foods are good for bones in Kenya?
Milk, maziwa lala, yoghurt, omena eaten with the bones, sukuma wiki, managu, beans, eggs and fortified foods are all good choices. Pair them with regular time in the sunshine.
Can bone loss be reversed?
You cannot fully reverse bone loss in every case, but you can slow it down and lower your fracture risk. Good nutrition, exercise, fall prevention and, when needed, medicines prescribed by your doctor can all help.
Do I need calcium or vitamin D supplements?
Not everyone does. Many people can get enough from food and sunlight. A vitamin D blood test can show whether you are low. Speak to your doctor before starting supplements.