Well on the advice of Richard Bridge (thanks RB) I have been taking about 1 & 1/2 to 2 tablespoons of hemp hearts on my weetabix 5 mornings a week for about a month now.

The strength and frequency of palpitations is markedly reduced. I sleep better at night. Added bonus is after eating this for breakers (1 weetabix, 2 tbs hemp hearts, 2 tbs fat free yogurt, 1 tbs dried cranberries and a sprinkle of omega rich seed mix) between 7:30 and 8:30am I don't feel hungry until about 5 to 6 hours later and I am quite satisfied with raw veg/fresh fruit lunch and one little babybel cheese and an apple at about 4pm.

So I think the hemp hearts will help me lose weight. Also my joints are a bit less achey, but I have resumed chemo and am very careful not to take too much acidy foods like orange juice, tomatoes, potatoes.

so far so good.