Hypercalcemia (high calcium levels) can occur in lymphoma when the cancer causes the body to release too much calcium into the bloodstream. This can happen because lymphoma cells sometimes produce substances that trigger bone breakdown, releasing calcium. Symptoms can include fatigue, confusion, nausea, and muscle weakness Show Full Answer
Hypercalcemia (high calcium levels) can occur in lymphoma when the cancer causes the body to release too much calcium into the bloodstream. This can happen because lymphoma cells sometimes produce substances that trigger bone breakdown, releasing calcium. Symptoms can include fatigue, confusion, nausea, and muscle weakness — so it's worth flagging any of these to your care team.
When calcium levels stay elevated, it can put real stress on the heart and blood vessels. High calcium can contribute to:
- Irregular heartbeats (arrhythmias)
- Stiffening of blood vessels
- Increased risk of cardiovascular complications, including worsening of coronary artery disease
This is especially important because heart disease and high blood pressure are already more common in people with lymphoma, particularly older adults. Some chemotherapy drugs used to treat lymphoma can also weaken the heart muscle over time, which adds another layer of cardiovascular risk. If you have existing coronary artery disease alongside lymphoma, your treatment team may need to adjust chemotherapy doses or choose heart-friendlier options to reduce risk. Regular heart monitoring during treatment is really important in this situation.
It's strongly recommended to discuss calcium levels and any heart-related concerns openly with your oncologist and cardiologist so they can work together on the safest treatment plan for you.
July 1
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