Digestive Health Archive

Multi-cancer early detection (MCED) tests offer the potential to detect up to 50 types of cancer from a single blood draw. Most cancer deaths stem from cancers for which there is no screening test. MCED tests may find evidence of less common but more lethal types like ovarian and pancreatic cancer. But before considering one of these tests (which can be requested online), people should understand the limitations, including the high cost and possibility of false positive results.

A 2025 study that included 97,000 people found that those who ate the most cruciferous vegetables-between 20 and 40 grams per day-had a 17% lower risk of developing colon cancer, compared with people who ate the least.

A diet low in sodium and rich in plant-based foods promotes a diverse, balanced population of gut microbes, which may help people maintain a healthy blood pressure. A salty diet increases the prevalence of bad microbes and reduces the number of beneficial microbes. When bad microbes accumulate in the gut, they form breakdown products and toxins that promote inflammation. Beneficial microbes feed on fiber, which is why a diet that provides a mix of healthy fiber from plant-based foods helps. These microbes produce short-chain fatty acids, which interact with specific receptors on cells that help regulate blood pressure.

More men are being diagnosed with prostate cancer, according to a 2025 study. Black men have a higher incidence of cancer and are twice as likely to die from the condition compared with white men.

A urine test, also known as a urinalysis, can reveal a great deal about a person's health. The kidneys produce urine to remove excess fluid and waste products from the body. But urine also contains various chemicals, minerals, toxins, bacteria, and red and white blood cells. Analyzing a urine sample with visual, chemical, and microscopic exams can reveal the presence and amounts of these substances, which can provide clues to specific conditions.

A 2025 study suggests that even a single session of resistance training or high-intensity interval training increases levels of certain proteins that can inhibit breast cancer cell growth, potentially contributing to a lower risk of recurrence.

Gynecologic cancers, which affect the ovaries, uterus, cervix, vagina, or vulva, are less common than breast cancer. Women can guard against these cancers by learning the risk factors for each type, which include obesity, exposure to human papillomavirus, and smoking. Women should also continue pelvic exams and cervical cancer screenings after a hysterectomy or menopause, as well as watch for unusual symptoms. Women with a strong family history of gynecologic or certain other cancers should consider genetic testing.

Colon cleanses are marketed to help detoxify the body, boost weight loss and immune function, and increase energy. But the colon removes toxins on its own. Colon cleanses also pose multiple health risks.

Eating a plant-based diet may help people lower their risk for chronic constipation, according to a 2025 study. This effect may be due, at least in part, to the high fiber content of plant-based diets.

A 2025 Harvard study found that people who most closely adhered to a Mediterranean or a plant-based diet had up to a 20% lower risk for chronic constipation, compared with people who followed other eating patterns.