The new body-fat standards are between 18% and 26% for men and between 26% and 36% for women, according to a Dec. 18 memo from undersecretary of defense for personnel and readiness Anthony J. Tata that the Pentagon released on Monday.

“The upper limit for allowable [waist-to-height ratio] for military service body-composition policies shall be less than 0.55,” the memo says.

The ratio is determined by dividing waist measurement by height.

Under the policy, service members with a waist-to-height ratio of 0.55 or above will be further tested and, if found to exceed body-fat standards, will be placed in their service’s remedial programs and referred to medical authorities for an evaluation, according to the memo.