Warsaw, April 20: Adults in India consume on an average about half the amount of calcium than required for healthy bones, according to a global map of dietary calcium intake launched on Friday.

Calcium is a major component of bone, accounting for between 30-35 per cent of its mass and much of its strength. Low calcium intake has been linked to lower bone-mineral density, which increases the risk of osteoporosis and broken bones.

In India, the average calcium intake is only 429 mg per day against the requirement of 800-1000 mg per day, according to the map launched by the International Osteoporosis Foundation (IOF), a nongovernmental organisation. 

Across the 74 countries included in the map, the estimate of average dietary calcium intake among adults varies widely, from a low of 175 mg/day in Nepal to a high of 1233 mg/day in Iceland, according to the findings presented at a symposium held in Krakow, Poland.

Countries in Asia, Africa and South America mostly have low calcium intakes, ranging between about 400 and 700 mg/day, showed the map.

The map reflects the findings of a recent study published in the journal Osteoporosis International.

"The Map reveals that in many parts of Asia and Southeast Asia the population has extremely low intakes of calcium in the diet, with levels often less than 400 to 500 mg a day," said Ambrish Mithal, co-author of the study and IOF board member from India.

"In China and India, the world's most populous countries, the average intake is shown to be only 338 mg/day and 429 mg/day respectively," Mithal added. 

The amount of calcium needed varies at different stages of life. Calcium requirements are especially high in the teenage years due to the rapid growth of the skeleton, and at older age, when the body's ability to absorb calcium declines. 

In older adults, bone loss occurs at a rate of about one per cent per year, resulting in calcium loss of approximately 15 g per year.

The recommendations for daily calcium intake vary by country, however 800-1000 mg/day is generally recommended for healthy adults, with higher amounts recommended for teenagers, postmenopausal women, the elderly, and people with osteoporosis. 

Foods rich in calcium include all dairy foods (milk, yoghurt, cheeses), certain vegetables (broccoli or kale), whole canned fish with soft edible bones such as sardines, some nuts, calcium-set soy products (tofu, soy milk), and some mineral waters.

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Mumbai (PTI): A banker who had attended Kunal Kamra's controversial show in the city was summoned as a witness after a case was registered against the comedian over his alleged jibes against Maharashtra deputy Chief Minister Eknath Shinde, police said on Wednesday.

While the police later told the Navi Mumbai-based man that his presence was not needed immediately, Kamra took to social media to express regret over the inconvenience caused to him, and offered to "schedule your next vacation anywhere you'd like in India."

The comedian also shared a media report which said the banker had to cut short his vacation following the police summons.

On Tuesday, police had denied reports that members of the audience who had attended Kunal Kamra's show had been summoned to record their statements.

A summons was sent to the banker, who had booked a ticket for Kamra's show through the BookMyShow app, on his mobile phone on March 29, a senior police official said.

An FIR was registered against Kamra for alleged defamation at the Khar police station on March 28 on a complaint lodged by Shiv Sena MLA Murji Patel.

The banker was asked to be present as the police wanted to record statements of witnesses, the official said.

Before sending him a notice, the investigating officer had called the banker and asked him to visit the Khar police station, the official added.

But later, after certain developments in the case, the police called the banker again and told him that his appearance was not required immediately, the officer said, adding he could be called whenever his statement is necessary.

Kamra, on the other hand, seized on media reports about the banker having to cancel his vacation due to the police summons.

"I am deeply sorry for the inconvenience that attending my show has caused to you. Please email me so that I can schedule your next vacation anywhere you'd like in India," Kamra posted on X.

According to the reports, the man, who was to return from vacation on April 6, had to come back to Mumbai on Monday.

The case stems from a parody song performed by Kamra at a show in Mumbai which appeared to target Shinde, who heads the Shiv Sena following his rebellion against Uddhav Thackeray, and call him a traitor. The song, though, did not name Shinde.

Angry Shiv Sena activists last month vandalised the studio where the show had been recorded.

On March 28, the Madras High Court granted interim anticipatory bail to the comedian. Justice Sunder Mohan also issued a notice to Khar police, and posted the matter to April 7 for further hearing.