Omega-3 fatty acids are essential nutrients important for various bodily functions, including brain health and attention. They typically contain both EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). DHA, in particular, has been shown to have attentional effects when consumed at a threshold level of 300 mg per day.
Despite any controversy that might be out there, I think it's fair to say that the consumption of omega-3 fatty acids can positively modulate the systems for attention and focus.
""Andrew Huberman mentions omega-3 fatty acids as a supplement that can positively modulate attention and focus. He discusses the importance of DHA and EPA content for attentional benefits."