The gray-market drugs flooding Silicon Valley reveal a community that believes it can move faster than the F.D.A.

WASHINGTON More Americans are injecting themselves with unapproved chemicals that are pitched as ways to build muscle, rejuvenate skin and extend life, the latest example of the nation’s fascination ...

Supplement companies often claim peptides can amplify muscle gain and facilitate fat loss. But few studies have explored the impact of peptides on bodybuilding, and some are banned in professional ...

Novo Nordisk is spending $6 billion in Kalundborg, Denmark, to expand the production of active pharmaceutical ingredients (APIs), including peptides used in weight-loss and antidiabetic drugs. The ...