Being healthy is not always good for health: 3 habits that cause long-term damage

Adopting healthy habits is key to maintaining well-being, but doing even the best practices in excess can sometimes lead to unexpected health issues. It’s important to understand how overdoing certain behaviors that are considered healthy may affect the body negatively. Recognizing these risks helps maintain a balanced and safe approach to health.

Dr. Dmitry Yaranov, a heart transplant cardiologist at Stern Cardiovascular in Tennessee and director of the advanced heart failure program at Baptist Memorial Hospital in Memphis, told Business Insider that any extreme is unlikely to be good for you. He added that he sees younger patients, sometimes in their 20s and 30s, experiencing health problems from overdoing certain “healthy” habits.

High-Protein Diets: Benefits and Risks

According to the Mayo Clinic, high-protein diets can help with short-term weight loss by increasing feelings of fullness. However, restrictive versions such as the carnivore diet, which cuts out nearly all carbohydrates, may cause nutritional deficiencies. Without enough fiber and essential nutrients, problems like bad breath, headaches, and constipation can develop.


Some high-protein diets also allow large amounts of red and processed meats, which are high in saturated fats. This can raise LDL (“bad”) cholesterol and increase the risk of heart disease. For people with kidney disease, excess protein can worsen kidney function as the body struggles to process the byproducts of protein metabolism.

The Mayo Clinic recommends choosing nutrient-rich protein sources, including soy, beans, nuts, fish, lean poultry, lean beef, low-fat dairy, and egg whites. It’s important to consult a healthcare provider before starting a high-protein plan, especially for those with chronic health issues.

Weekend-Only Drinking: Hidden Dangers

A study published in the African Journal of Biological Sciences found that social drinking over the weekend can cause a significant rise in blood pressure compared to alcohol-free weekends. This effect may go unnoticed during weekday health checks, as blood pressure remains temporarily elevated after drinking.

Binge drinking — common in weekend-only drinking patterns — strains the liver, raises heart disease risk, and weakens the immune system. Alcohol also disrupts brain chemistry, affecting mood, decision-making, and sleep quality. It can derail fitness goals by causing dehydration, impairing muscle recovery, and triggering unhealthy food cravings. Over time, even weekend-only drinking can develop into dependency.

Extreme Exercise: When More Becomes Harmful

The Cleveland Clinic notes that while exercise is vital for heart health, pushing the body beyond its limits can cause problems. Research on marathon runners has shown that extreme endurance events lead to temporary markers of heart damage in the blood. Repeated stress may result in lasting changes such as thickened heart walls or scarring.

High-intensity activity can also trigger arrhythmias or even sudden cardiac arrest in people with underlying conditions like hypertrophic cardiomyopathy or coronary heart disease.

The American Heart Association recommends at least 150 minutes of moderate activity weekly, such as walking, jogging, or swimming, which benefits heart health without excessive risk. Those with heart conditions should consult a doctor before increasing exercise intensity.