Should You Avoid Calcium Supplements After a Fracture for Three Weeks? - Orthopedics

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Calcium Supplementation


Hello Doctor: I came across an article online stating that calcium supplements should not be taken within "three weeks" after a fracture.
Is this claim correct? I have read many articles, and different doctors have varying opinions; some say that moderate supplementation is beneficial.
My mother (almost 60 years old) recently had a fracture and underwent surgery to insert screws.
She has been taking calcium tablets (brand name: Gu Guan Neng / distributor: Xinglin Pharmaceutical) during the three weeks following her injury.
After reading this article, I am worried that taking calcium supplements may affect her fracture healing or slow down her recovery.
The article summarizes as follows: To promote faster healing of bones after a fracture, do not rely on calcium supplements.
Wang Kunzheng, the director of orthopedics at the Second Hospital of Xi'an Jiaotong University, pointed out that calcium supplementation should be avoided for at least three weeks post-fracture.
This is because, within three weeks (some say up to six weeks) after a fracture, the body's calcium does not participate in the repair of the fracture site.
After three weeks, local swelling gradually subsides, and the body begins to secrete calcium and form a callus, allowing the fracture ends to heal gradually.
Additionally, after a fracture, bone tissue is damaged, leading to an increase in free calcium in the body, resulting in a hypercalcemic state.
If calcium supplements are taken indiscriminately, it may increase blood calcium levels and suppress parathyroid hormone.
After three weeks, when bone healing requires calcium, low parathyroid hormone levels can lead to decreased blood calcium, resulting in insufficient calcium supply at the fracture site, which affects healing.
Therefore, there is no need to supplement any calcium within three weeks after a fracture.

angela, 20~29 year old female. Ask Date: 2012/11/15

Dr. Zhang Jiahao reply Orthopedics


Currently, I have not heard of this theory being widely accepted; moderate calcium supplementation should not have any particular drawbacks!

Reply Date: 2012/11/15

More Info


The question of whether to avoid calcium supplements for three weeks after a fracture is a topic of considerable debate among healthcare professionals. The article you referenced suggests that calcium supplementation should be avoided during the first three weeks post-fracture, citing that the body's calcium does not participate in the healing process during this time. This claim, however, is not universally accepted in the medical community.

First, it is essential to understand the role of calcium in bone health and healing. Calcium is a critical mineral for bone formation and maintenance. When a fracture occurs, the body initiates a complex healing process that includes inflammation, bone formation, and remodeling. During the initial inflammatory phase, which can last several days to weeks, the body begins to repair the damaged tissue, and calcium plays a role in this process.

The argument against calcium supplementation in the early stages of healing often revolves around the idea that the body may already be in a state of high calcium due to the breakdown of bone tissue. This can lead to elevated levels of calcium in the bloodstream, which might suppress parathyroid hormone (PTH) secretion. PTH is crucial for regulating calcium levels in the body and stimulating bone healing. If calcium levels are too high, it could theoretically hinder the healing process.

However, many experts argue that adequate calcium intake is essential for optimal bone healing. The body requires calcium not only for the formation of new bone but also for the overall metabolic processes that support healing. Research has shown that calcium, along with vitamin D, is vital for bone health, and deficiencies can lead to delayed healing or complications.

For individuals who have sustained a fracture, especially older adults who may already be at risk for osteoporosis, maintaining adequate calcium intake is crucial. The recommended dietary allowance (RDA) for calcium varies by age and sex, but for adults, it generally ranges from 1,000 to 1,200 mg per day. If dietary sources of calcium are insufficient, supplements can be beneficial.

In your mother's case, since she has been taking calcium supplements after her fracture, it is essential to consider her overall dietary intake, her specific health conditions, and the advice of her healthcare provider. If she has been consuming adequate calcium through her diet and supplements, it is unlikely that this would negatively impact her healing process.
Moreover, the healing of fractures is influenced by various factors, including age, overall health, nutrition, and the type of fracture. Therefore, it is crucial to have a holistic approach to recovery, which includes not only calcium but also other nutrients like vitamin D, protein, and adequate hydration.

In conclusion, while there may be some rationale behind the recommendation to avoid calcium supplements immediately after a fracture, it is not a universally accepted guideline. Adequate calcium intake is essential for bone health, and individuals recovering from fractures should focus on a balanced diet that meets their nutritional needs. It is always best to consult with a healthcare provider who can offer personalized advice based on individual circumstances and health status.

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