Androgens are a class of drugs used to treat symptoms of lowtestosteronein adult men who havehypogonadism(a condition in which the body does not produce enough natural testosterone) in males and metastaticbreast cancerin females. Androgens are a group of hormones that play a key role in male t...
In general, female mammals bear a larger energetic burden than males in terms of offspring investment. The high cost of gestation and infant care is a potential factor driving female mammals to avoid dispersal and remain in the natal group with assistance from kin (Clutton-Brock and Lukas, ...
then you do not want to portray yourself as a strong autonomous individual that is going to individually fight off anybody who proposes problems. Even in the other primates, where there is a female-male size disparity, females don't confront males individually, but a...
Perhaps female monkeys are “programmed” to be social and maternal, and therefore, they are more likely to choose soft toys that can be groomed or held while males are active and prefer toys that move, however, Sexually dimorphic brain mechanisms for toy choice? The findings of Hassett and...
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(tirzepatide) clinical studies. Overall,hair loss was reported in 4% to 5% of peopleusing Zepbound compared to 1% using a placebo. In people using Zepbound, hair loss occurred more frequently in females (7.1%) than in males (0.5%), but no patients using Zepbound stopped studies due to...
TSH levels also vary by sex. This is because the hormone estrogen influences TSH levels.4 Some studies suggest a normal TSH range in younger females aged 18 to 29 may be closer to 0.4-2.5 mU/L.5The normal TSH range in males is closer to 0.4-4.0 mU/L.4 ...
By the mid-20th century, however, it was apparent that administering androgens to females or estrogens to males was not always effective in sex-reversing behavior and that in some cases a "female" hormone such as an estrogen could produce male-typical behavior and an androgen could induce ...
However, tissue or leukocyte DNA molecular genetic analysis of males with isolated cryptorchidism showed no abnormalities of the coding sequences of exons 1 to 8 of the AR gene 3, 4. In addition, the size of the CAG repeat in exon 1 of AR gene did not differ between cryptorchid patients...
Estrogen may also offer an advantage of protecting against muscle fatigue, although its effects can vary by athlete and running conditions [source: Crowther]. Those biological benefits may help explain women's sudden surge in Iditarod races, the grueling Alaskan dog sledding competition, bringing ...