Final answer:
Adults are generally advised to have a fecal occult blood test annually starting at age 50, but individual recommendations may vary based on personal risk factors and consultation with a healthcare provider.
Step-by-step explanation:
The frequency with which males and females should have a fecal occult blood test (FOBT) done depends on age, personal risk factors, and general health recommendations. Generally, screening for fecal occult blood tests and colonoscopies are advised for those over 50 years of age, in the absence of any family history or other risk factors. For those without an increased risk of colorectal cancer or other relevant conditions, the American Cancer Society recommends that FOBTs be done every year beginning at age 50. It is important to consider that this may vary based on individual cases, so consulting with a healthcare provider is essential for personalized advice.