ALA for PN (Peripheral Neuropathy)

Hi all, I just googled it too out of interest . So far, 1 year and a bit post chemo, haven't experienced any PN. I take ground flaxseed nearly everyday and walnuts every other day. Notable ingredient in both?  ALA! Also found in chia and hemp seeds amongst other foods. Here's a list :

Common name	Alternate name	Linnaean name	% ALA†(of oil)	ref.
Chia	chia sage	Salvia hispanica	64%	[11]
Kiwifruit seeds	Chinese gooseberry	Actinidia chinensis	62%	[11]
Perilla	shiso	Perilla frutescens	58%	[11]
Flax	linseed	Linum usitatissimum	55%	[11]
Lingonberry	cowberry	Vaccinium vitis-idaea	49%	[11]
Camelina	camelina	Camelina sativa	35-45%
Purslane	portulaca	Portulaca oleracea	35%	[11]
Sea buckthorn	seaberry	Hippophae rhamnoides L.	32%	[12]
Hemp	cannabis	Cannabis sativa	20%	[11]
Walnut	English walnut / Persian walnut	Juglans regia	10.4%	[13]
Rapeseed	canola	Brassica napus	10%	[2]
Soybean	soya	Glycine max	8%	[2]
			†average value