Researchers connected ADHD with Alzheimer's. (Dementia) New research connects ADHD with Alzheimer's. The thing that we must realize is that ADHD patients have more often social problems. Sometimes ADHD patient is "weird". And those people have problems with their social relationships. ADHD patients must concentrate harder to keep themselves calm than other people. If we must always concentrate on our behavior and be afraid that somebody sees something that we don't want to tell that causes stress. Stress causes high blood pressure. "Scientists have discovered that short-term fluctuations in blood pressure are linked to cognitive impairment and increased vascular problems in older adults. These fluctuations, overlooked in clinical treatments focusing on hypertension, also correlate with arterial stiffness. The findings suggest that monitoring blood pressure variability could serve as an early marker or intervention point for preventing dementia, even in ind