Diet and nutrition Archive

A high intake of sugar is linked to an increased risk of obesity, type 2 diabetes, cardiovascular disease, and certain cancers. But whether some sugars are healthier (or worse) than others remains a question of interest to many.

Low-carb diets can have varied effects on LDL cholesterol levels based on a person’s body mass index. In lean people, LDL cholesterol values can rise dramatically, while levels may decline in people with obesity.

Drinking up to five cups of coffee per day is safe for most people and may lower the risk of heart disease and stroke, according to a 2026 statement from the American Heart Association.

Carb cycling—alternating high- and low-carb days—may help athletes with fat loss and body composition when paired with structured exercise. But for most everyday exercisers, the regimen likely doesn’t offer benefits over simply following a healthy, balanced diet.

Orthorexia is an obsession with “pure” or “clean” eating that goes beyond healthy habits—marked by rigid food rules, anxiety around imperfect eating, and feelings of superiority. Though not a formal diagnosis, it’s treatable with help from a multidisciplinary team that includes various specialists in diet and mental health.

Bacteria, parasites, and viruses can all cause food poisoning. Proper handling, cooking, and storage of food help reduce the chances of an infection. If you get food poisoning, it usually can be treated at home by replenishing lost fluids and electrolytes.

A major study of survivors of nonmetastatic prostate cancer found that those eating the most saturated fat had a 24% higher risk of death over a 13-year period, mainly from heart disease and other cancers. Swapping animal fats for plant-based, unsaturated fats was linked to significantly lower risks.

While gluten-free packaged foods offer convenience, whole foods like fruits, vegetables, proteins, dairy, and naturally gluten-free grains often provide better nutrition at lower cost. Building meals around these staples, rather than relying solely on specialty products, makes gluten-free eating easier to sustain.

Kelp contains a nutrient that affects thyroid function, making supplement choices important for people with nodules or other thyroid concerns.