Why would people from the north take calcium and vitamin D?

Question

Also, why is swimming not a recommended exercise to prevent osteoporosis?

Answer 1

Vitamin D is produced in the body in the skin using sunlight. There are fewer hours of sunlight in the day the farther north (and south) of the equator you live. Vitamin D is important in the formation of bones. That's why it's recommended that people take vitamin D and calcium in the northern locations.

For some reason, it's been shown that swimming, although good exercise, does not prevent osteoporosis.

Answer 2

Those living in Northern climates do not have the same amount of sun exposure for adequate Vitamin D production. Calcium is required for proper Vitamin production by the body.

Answer 3

Swimming is easier on the joints.

Answer 4

vitamin D is taken in the north because theres not as much sunlight, which your skin uses to make vitamin D, but thank to genetic engineering and other sciences D is supplemented by western food products.