Theyre FDA-approved for diabetes, obesity, and sleep apnea, but the drugs are used for off-label purposes, tooincluding long COVID
GIP receptor activation also appears to enhance the tolerability of GLP-1 receptor activation, which may explain why tirzepatide is associated with lower rates of nausea compared to equivalent doses of semaglutide despite producing greater weight loss
1 Weight loss has also been correlated with changes in thyroid levels
This variability complicates the determination of an effective dose
Several small studies involving people with digital eye strain suggest that 612mg daily for about a month may improve focusing ability and reduce eye fatigue compared to placebo, though results vary across trials and endpoints.2 12 In the brain, preclinical studies show that astaxanthin can reduce oxidative stress in neurons and may help preserve mitochondrial function.27 A few human studies suggest possible cognitive benefits such as improved reaction time and memory scores but the sample sizes remain small, so researchers emphasize the need for larger, long-term trials before firm conclusions can be drawn.6 9 26 Cardiovascular and metabolic health Because oxidative stress and inflammation are key contributors to heart and metabolic diseases, researchers have explored whether astaxanthin can make a measurable difference
