Question

which disease may be caused by an unhealthy lifestyle?
osteoporosis
sickle cell disease
huntingtons disease
lupus

Explanation:

Osteoporosis can be influenced by lifestyle factors like lack of exercise, poor diet (low in calcium and vitamin D), and smoking. Sickle cell disease is a genetic disorder. Huntington's disease is also genetic. Lupus has a complex cause involving genetics and immune system factors but not primarily an unhealthy lifestyle in the same direct way as osteoporosis.

Answer:

osteoporosis